lcg_sdel.c

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/* lcg_sdel.c - Delete data and KEY from Grid
 * ====================================================================
 * 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 <dlfcn.h>
#include <ctype.h>
#include <gfal_api.h>
#include "lcg_util.h"
#include "ss-util.h"
#include "lcg_sdel.h"
#include "keystore_client.h"

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

//extern const char *const ss_errlist[];
//extern int  securestorage_nerr;

/*
 * LCG_SDEL Function 
 *
 */
int lcg_sdel(char *src_file,int aflag,char *se,char *vo,char *conf_file,
                                int insecure,int verbose,int timeout) {
        
        int deletekey=0;
        size_t inv;
        char *src_file_new;
        // Valid character
        const char *accept_host=" abcdefghilmnopqrstuvzwyxkjABCDEFGHILMNOPQRSTUVZWYXKJ0123456789.-";
        const char *accept_vo=" abcdefghilmnopqrstuvzwyxkjABCDEFGHILMNOPQRSTUVZWYXKJ0123456789-";
        const char *accept_lfn=" abcdefghilmnopqrstuvzwyxkjABCDEFGHILMNOPQRSTUVZWYXKJ0123456789.:_/-";

        if (src_file==NULL) {
                errno = SS_EINVALLFN;
                return (-1);
        }
        // Verify length of destination lfn
        if (strlen (src_file) + 1 > LCG_MAXPATHLEN) {
                errno = SS_ESOURCENAMETOOLONG;
                return (-1);
        }
        if (vo == NULL) {
                vo = getenv("LCG_GFAL_VO");
                if (!vo) {
                        errno = SS_EINVALVO;
                        return (-1);
                }
        }
        // Input file must be an LFN
        if (strncmp(src_file, "lfn:", 4) != 0) {
                errno = SS_EINVALLFN;
                return (-1);    
        }
        
        // Get default SE from Environment Variable
        char oo[strlen(vo)+1];
        char *storageelementdest;
        int i;
        strcpy(oo,vo);
        for (i=0; oo[i]!=0; i++)
                oo[i] = toupper(oo[i]);
        storageelementdest = calloc(1, (strlen(oo)+strlen("VO_%s_DEFAULT_SE")+1));
        sprintf(storageelementdest,"VO_%s_DEFAULT_SE",oo);
        se = getenv(storageelementdest);
        free(storageelementdest);
        if ( aflag == 0 && se == NULL) {
                errno = SS_EINVALSE;
                return (-1);    
        }
        
        // Input parameters filter
        inv=0;
        inv = strspn(vo, accept_vo);
        if (inv != strlen(vo) ) {
                errno = SS_EINVALVO;
                return (-1);
        }
        inv=0;
        inv = strspn(src_file, accept_lfn);
        if (inv != strlen(src_file) ) {
                errno = SS_EINVALLFN;
                return (-1);
        }
        if (se != NULL) {
                inv=0;
                inv = strspn(se, accept_host);
                if (inv != strlen(se) ) {
                        errno = SS_EINVALSE;
                        return (-1);
                }
        }       
        
        // Add LFC_HOME to LFN
        if ( ss_get_lfchome(src_file, &src_file_new) < 0 ) {
                int errno_save = errno;
                errno = errno_save;
                return (-1);                    
        }
        
        int existence = ss_check_lfn ( src_file_new, vo);
        int errno_save = errno;
        if ( existence < 0 ) {
                free(src_file_new);
                errno = errno_save;
                return (-1);
        } else if ( existence == 0 ) {
                free(src_file_new);
                errno = SS_ENOENT;
                return (-1);
        }
        
        if (aflag == 0) {
        char **pfns;
                if ( lcg_lr(src_file_new, vo, conf_file, insecure, &pfns) < 0) {
                        int errno_save = errno;
                        free(src_file_new);
                        errno = errno_save;
                        return (-1);
                }
                // Verify if exist at least one replica
                if (pfns[0] == NULL) {
                        free(pfns); free(src_file_new);
                        errno = SS_ENOENT;
                        return (-1);
                } else if (pfns[1]== NULL) {
                        pfns[0]+=6;
                        int g = strcspn(se, "\n");
                        if (strncmp (pfns[0], se, g) != 0) {
                                pfns[0]-=6;
                                free(pfns[0]); free(pfns); free(src_file_new);
                                errno = SS_ENOENT;
                                return (-1);
                        }
                        deletekey=1;
                        pfns[0]-=6;
                } else {
                        int x;
                        int found = 0;
                        for (x=0;pfns[x]!=NULL;x++) {
                                pfns[x]+=6;
                                int g = strcspn(se, "\n");
                                if (strncmp (pfns[x], se, g) == 0) {
                                        found = 1;
                                        pfns[x]-=6;
                                        break;
                                }
                                pfns[x]-=6;
                        }
                        if (!found) {
                                for(x=0;pfns[x]!=NULL;x++) {
                                        free(pfns[x]);
                                }
                                free(pfns); free(src_file_new);
                                errno = SS_ENOENT;
                                return (-1);
                        }
                        
                }
        }
        
    if ( aflag == 1 || deletekey == 1) {
                // DELETE KEY AND IV FROM KEYSTORE
                if ( ss_delete_key(src_file_new) < 0) {
                        int errno_save = errno;
                        free(src_file_new);
                        errno = errno_save;
                        return (-1);
                }       
    }
        
        if (lcg_delt (src_file_new, aflag, se, vo, conf_file, insecure, verbose, timeout) < 0) {
                int errno_save = errno;
                free(src_file_new);
                errno = errno_save;
                return (-1);
        }
        free(src_file_new);
        
        return (0);
}

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