/*
    nwlistsalvage.c - Utility to list information about salvageagle files
    on NetWare volumes
    Copyright (c) 2005		Scott Bentley

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    Revision history:

	0.00  2005			Scott Bentley
		Initial revision.
 */

#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include <ncp/nwcalls.h>
#include <ncp/nwnet.h>
#include <ncp/eas.h>

#include "private/libintl.h"
#define _(X) gettext(X)

#ifdef N_PLAT_DOS
#ifndef NTYPES_H
typedef unsigned int   nuint16;
#endif
typedef unsigned long  nuint32;
typedef unsigned int   nuint;
#else
#endif

static inline size_t my_strftime(char *s, size_t max, const char *fmt, const struct tm *tm) {
	return strftime(s, max, fmt, tm);
}

static void doID(NWCONN_HANDLE conn, nuint32 id) {
	NWCCODE err;
	char user[MAX_DN_BYTES];
	nuint16 type;

	if (!id) {
		printf(_("Nobody"));
	} else {
#ifdef N_PLAT_DOS
		id = ntohl(id);
#endif
		err = NWGetObjectName(conn, id, user, &type);
		if (err) {
			NWDSContextHandle ctx;
			
			sprintf(user, _("Unknown:N/A"));
			err = NWDSCreateContextHandle(&ctx);
			if (!err) {
				NWDSAddConnection(ctx, conn);
				err = NWDSMapIDToName(ctx, conn, id, user);
				if (err)
					sprintf(user, _("Unknown:<%s>"), strnwerror(err));
				NWDSFreeContext(ctx);
			}
		} else {
			switch (type) {
				case OT_USER:       printf(_("User:"));break;
				case OT_USER_GROUP: printf(_("Group:"));break;
				case OT_FILE_SERVER:printf(_("FileServer:"));break;
				default:            printf(_("Unknown(%04X):"), type);break;
			}
		}
		printf("%s", user);
	}
}

static void dodate(nuint date) {
	static const time_t zero_time_t = 0;
	struct tm* tm;
	char text[100];
	
	tm = gmtime(&zero_time_t);
	tm->tm_year = (date>>9)+80;
	tm->tm_mon = ((date>>5) & 0xF) - 1;
	tm->tm_mday = date & 0x1F;
	tm->tm_isdst = 0;
	my_strftime(text, sizeof(text), "%x", tm);
	printf("%s", text);
}

static void dotime(nuint dtime) {
	static const time_t zero_time_t = 0;
	struct tm* tm;
	char text[100];
	
	tm = gmtime(&zero_time_t);
	tm->tm_hour = dtime >> 11;
	tm->tm_min = (dtime >> 5) & 0x3F;
	tm->tm_sec = (dtime << 1) & 0x3F;
	tm->tm_isdst = 0;
	my_strftime(text, sizeof(text), "%X", tm);
	printf("%s", text);
}

static void dodatesTimesID(NWCONN_HANDLE conn, nuint dtime, nuint date, nuint32 id) {
	if (dtime || date) {
		dodate(date);
		printf(" ");
		dotime(dtime);
	} else {
		printf("%-17s", _("never"));
	}
	if (id) {
		printf("%10s","");
		doID(conn, id);
	}
	printf("\n");
}

static void usage(void) {
	printf(_(
"usage: nwlistsalvage [options] [directory]\n"
"\n"
"-h              Print this help text\n"
"-n <namespace>  Namespace for file access.\n"
"                  DOS\n"
"                  LONG - Default\n"
"                  MAC\n"
"                  NFS\n"
"                  FTAM\n"
"-v              Verbose\n"
"\n"
"directory  Directory to examine for salvageable files.  Default is ./\n"
"\n"
));
}

static int g_verbose = 0;
static int g_files = 0;
static int g_nwns = NW_NS_LONG;

static void print_file_info(NWCONN_HANDLE conn, const struct ncp_deleted_file info, const struct NSI_Change deleted, const struct nw_info_struct3* vinfo) {
	NWCCODE err;
	struct NSI_Attributes attr;
	struct NSI_Name name;
	struct NSI_Modify modify;
	struct NSI_Change created;
	const char* type;
		
	//Get attributes
	err = ncp_ns_extract_info_field(vinfo,NSIF_ATTRIBUTES,&attr,sizeof(attr));
	if (err) {
		printf("Cannot retrieve file attributes: %s\n",strnwerror(err));
		return;
	}
	if (attr.Attributes & A_DIRECTORY) {
		type = "D";
	} else {
		type = "F";
	}
	
	//Get name	
	err = ncp_ns_extract_info_field(vinfo,NSIF_NAME,&name,sizeof(name));
	if (err) {
		printf(_("Cannot retrieve file name: %s\n"),strnwerror(err));
		return;
	}
	
	// Show standard set of info
	printf("%2s%s %d %s\n", "", type, info.seq, name.Name);
	
	// Show verbose info	
	if(g_verbose) {
		printf("%5sDeleted:\t\t","");
		dodatesTimesID(conn,deleted.Time,deleted.Date,deleted.ID);
		
		printf("%5sCreated:\t\t","");
		err = ncp_ns_extract_info_field(vinfo,NSIF_CREATION,&created,sizeof(created));
		if (err) {
			printf(_("Cannot retrieve creation info: %s\n"),strnwerror(err));
			return;
		} else {
			dodatesTimesID(conn,created.Time,created.Date,created.ID);
		}
	
		printf("%5sLast Modified:\t","");
		err = ncp_ns_extract_info_field(vinfo,NSIF_MODIFY,&modify,sizeof(modify));
		if (err) {
			printf(_("Cannot retrieve modified info: %s\n"),strnwerror(err));
			return;
		} else {
			dodatesTimesID(conn,modify.Modify.Time,modify.Modify.Date,modify.Modify.ID);
		}
	}
}

static void list_salvageable_files(struct ncp_conn* conn, int volume, u_int32_t directory_id) {
	struct ncp_deleted_file info;//file info
	struct nw_info_struct3 vinfo;//verbose file info
	struct NSI_Change deleted;

	vinfo.len =0;
	vinfo.data = NULL;
	
	info.seq = -1;//Initialize the file id to start with first file
	while (!ncp_ns_scan_salvageable_file2(conn, g_nwns, 
			1, volume, directory_id, NULL, 0, 
			&info, &deleted,
			IM_ALL, &vinfo, sizeof(vinfo)
			)) {

		print_file_info(conn,info,deleted,&vinfo);
		
		vinfo.len = 0;
		free(vinfo.data);
		vinfo.data = NULL;

		g_files++;
	}
	printf("\n");
}

int main(int argc, char* argv[]) {
	struct NWCCRootEntry root;
	const char* mount_path;
	const char* opt_n;
	struct ncp_conn* conn;
	int err;
	int c;

	setlocale(LC_ALL, "");
	bindtextdomain(NCPFS_PACKAGE, LOCALEDIR);
	textdomain(NCPFS_PACKAGE);
	
	while ((c = getopt(argc, argv, "hnv")) != -1) {
		switch (c) {
			case '?':
			case ':':
			case 'h':usage(); exit(2);
			case 'n':
				opt_n = argv[optind++];
				if (strcasecmp(opt_n, "DOS") == 0) {
					g_nwns = NW_NS_DOS;
				} else if (strcasecmp(opt_n, "MAC") == 0) {
					g_nwns = NW_NS_MAC;
				} else if (strcasecmp(opt_n, "NFS") == 0) {
					g_nwns = NW_NS_NFS;
				} else if (strcasecmp(opt_n, "FTAM") == 0) {
					g_nwns = NW_NS_FTAM;
				} else if (strcasecmp(opt_n, "LONG") == 0) {
					g_nwns = NW_NS_LONG;
				} else {
					fprintf(stderr, _("Unrecognized namespace for option '-%c'\n"), c);
					exit(1);
				}
				break;	
			case 'v':g_verbose = 1;
				 break;
			default: fprintf(stderr, _("Unexpected option `-%c'\n"), c);
				 break;
		}
	}
	if (optind < argc) {
		mount_path = argv[optind++];
	} else {
		mount_path = ".";
	}
	err = ncp_open_mount(mount_path, &conn);
	if (err) {
		com_err("nwlistsalvage", err, _("in ncp_open_mount"));
		exit(1);
	}
	err = NWCCGetConnInfo(conn, NWCC_INFO_ROOT_ENTRY, sizeof(root), &root);
	if (err) {
		com_err("nwlistsalvage", err, _("when retrieving root entry"));
		ncp_close(conn);
		return 0;
	}
	
	list_salvageable_files(conn, root.volume, root.dirEnt);

	if (!g_files) {
		printf(_("No salvageable files were found.\n"));
	} else if (g_files == 1) {
		printf(_("1 salvageable file was found.\n"));
	} else {
		printf(_("%d salvageable files were found.\n"), g_files);
	}

	ncp_close(conn);
	return 0;
}