CU Amiga Super CD-ROM 19/CU Amiga Magazine's Super CD-ROM 19 (1998)(EMAP Images)(GB)[!][issue 1998-02].iso/CUCD/Online/NNTPd/server/group.c

C/C++ Source or Header | 2002-12-03 | 4.0 KB | 193 lines

#ifndef lint
static char    sccsid[] = "@(#)group.c    1.12    (Berkeley) 5/11/89";
#endif

#include "common.h"

#ifdef XTHREAD
extern char *thread_name();
#endif
#if defined(XOVER) || defined(XROVER)
extern void close_xfiles();
#endif

extern char *malloc();

/*
 * GROUP newsgroup
 *
 * Change the current group to the specified newsgroup.
 * We also change our current directory to that newsgroup if
 * a spool directory for it exists.
 * If the newsgroup specified is invalid, the old newsgroup
 * remains selected.
 */

void
group(argc, argv)
    int    argc;
    char    *argv[];
{
    char    temp_dir[256];
    int    high_msg, low_msg;
    char    *cp;
    char    *reqlist[2];

    if (argc != 2) {
        printf("%d Usage: GROUP newsgroup.\r\n", ERR_CMDSYN);
        (void) fflush(stdout);
        return;
    }

    if (!canread) {
        printf("%d You only have permission to transfer, sorry.\r\n",
            ERR_ACCESS);
        (void) fflush(stdout);
        return;
    }

    if (index(argv[1], '/') != (char *) NULL) {
        printf("%d Invalid group name (bad format).\r\n", ERR_NOGROUP);
        (void) fflush(stdout);
        return;
    }

    if (find_group(argv[1], &low_msg, &high_msg) < 0) {
        printf("%d Invalid group name (not in active).\r\n",
            ERR_NOGROUP);
        (void) fflush(stdout);
        return;
    }

    reqlist[0] = argv[1];
    reqlist[1] = NULL;

    if (ngpermcount) {
        if (ngmatch(s1strneql, ALLBUT,
            ngpermlist, ngpermcount, reqlist, 1) == 0) {
            printf("%d You're not allowed to read %s, sorry.\r\n",
                ERR_ACCESS, argv[1]);
            (void) fflush(stdout);
            return;
        }
    } else if (ALLBUT == 0) {
        printf("%d You're not allowed to read %s, sorry.\r\n",
            ERR_ACCESS, argv[1]);
        (void) fflush(stdout);
        return;
    }

#if defined(XOVER) || defined(XROVER)
    close_xfiles();
#endif
    close_crnt();
    if (group_name)
        free(group_name);
    (void) chdir(spooldir);
    if ((group_name = malloc(strlen(argv[1])+1)) != NULL)
        strcpy(group_name, argv[1]);

#ifdef LOG
    syslog(LOG_INFO, "%s group %s", hostname, argv[1]);
#endif

    while ((cp = index(argv[1], '.')) != (char *) NULL)
        *cp = '/';

    (void) strcpy(temp_dir, spooldir);
    (void) strcat(temp_dir, "/");
    (void) strcat(temp_dir, argv[1]);

    /*
     * (void) because a group can be in the active file
     * but not have a spool directory.  Just leave us
     * chdired to base spool directory if this fails.
     */
    (void) chdir(temp_dir);

#ifdef LOG
    ++grps_acsd;
#endif

    num_arts = scan_dir(low_msg, high_msg);
    art_ptr = 0;

    ingroup = 1;

#ifdef    XTHREAD
    threadfile = thread_name(argv[1]);
#endif

    while ((cp = index(argv[1], '/')) != (char *) NULL)
        *cp = '.';

    printf("%d %d %d %d %s\r\n",
        OK_GROUP,
        num_arts,
        (num_arts > 0 ? art_array[0] : 0),
        (num_arts > 0 ? art_array[num_arts-1] : 0),
        argv[1]);
    (void) fflush(stdout);
}

#ifdef LISTGROUP
/*
 * LISTGROUP [group]
 *
 * Lists all article numbers (filenames) in the given group. Used by
 * newsreaders such as nn and trn for fast validation of a database.
 * If a group name is given it becomes the current group.
 *
 * This command is an extension, and not included in RFC 977.
 */

void
xlistgroup(argc, argv)
    int        argc;
    char        *argv[];
{
    register int i;

    if (argc == 2) {
        ingroup = 0;
        /* This will output a success or failure message */
        group(argc, argv);
        if (!ingroup) {
            return;
        }
    } else if (argc > 2) {
        printf("%d Usage: LISTGROUP [newsgroup].\r\n", ERR_CMDSYN);
        (void) fflush(stdout);
        return;
    } else if (!ingroup) {
        printf("%d You are not currently in a newsgroup.\r\n",
            ERR_NCING);
        (void) fflush(stdout);
        return;
    } else if (!canread) {
        printf("%d You only have permission to transfer, sorry.\r\n",
            ERR_ACCESS);
        (void) fflush(stdout);
        return;
    } else {
        /* output a success message when no group name is given */
        printf("%d %d %d %d %s\r\n",
            OK_GROUP,
            num_arts,
            (num_arts > 0 ? art_array[0] : 0),
            (num_arts > 0 ? art_array[num_arts-1] : 0),
            group_name? group_name : "(current group)");
    }

#ifdef LOG
    syslog(LOG_INFO, "%s listgroup", hostname);
#endif
    for (i = 0; i < num_arts; i++) {
        printf("%d\r\n", art_array[i]);
    }
    putline(".");
    (void) fflush(stdout);
}

#endif /* LISTGROUP */