svr4pkg/libinst/dockdeps.c

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved.
 */

/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */

#include <stdio.h>
#include <errno.h>
#include <limits.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <ctype.h>
#include <dirent.h>
#include <sys/types.h>
#include <pkgstrct.h>
#include <pkginfo.h>
#include <locale.h>
#include <libintl.h>
#include <pkglib.h>
#include "libinst.h"
#include "libadm.h"
#include "messages.h"

#define LSIZE   256
#define NVERS   50

/*
 * internal global variables
 */

static struct pkginfo info;

static char type;
static char *alist[NVERS];
static char *rmpkginst;
static char *vlist[NVERS];
static char file[128];
static char name[128];
static char rmpkg[PKGSIZ+1];
static char wabbrev[128];

static int  errflg = 0;
static int  nlist;
static int  pkgexist;
static int  pkgokay;
static int  is_update;

/*
 * IMPORTANT NOTE: THE SIZE OF 'abbrev' IS HARD CODED INTO THE CHARACTER
 * ARRAY SSCANF_FORMAT -- YOU MUST UPDATE BOTH VALUES AT THE SAME TIME!!
 */

static char abbrev[128+1];
static char *SSCANF_FORMAT = "%c %128s %[^\n]";

/*
 * forward declarations
 */

static void ckrdeps(boolean_t a_preinstallCheck);
static void ckpreq(FILE *fp, char *dname, boolean_t a_preinstallCheck);
static void deponme(char *pkginst, char *pkgname,
                boolean_t a_preinstallCheck);
static void prereq(char *pkginst, char *pkgname,
                boolean_t a_preinstallCheck);
static void incompat(char *pkginst, char *pkgname,
                boolean_t a_preinstallCheck);
static int  getaline(FILE *fp);

/*
 * *****************************************************************************
 * global external (public) functions
 * *****************************************************************************
 */

int
dockdeps(char *a_depfile, int a_removeFlag, boolean_t a_preinstallCheck)
{
    FILE    *fp;
    int i;
    char    *inst;

    if (a_removeFlag) {
        /* check removal dependencies */
        rmpkginst = a_depfile;
        (void) strncpy(rmpkg, rmpkginst, PKGSIZ);
        (void) strtok(rmpkg, ".");
        (void) snprintf(file, sizeof (file),
                "%s/%s/%s", pkgdir, rmpkginst, DEPEND_FILE);
        if ((fp = fopen(file, "r")) == NULL)
            goto done;
    } else {
        if ((fp = fopen(a_depfile, "r")) == NULL) {
            progerr(ERR_CANNOT_OPEN_DEPEND_FILE, a_depfile,
                    strerror(errno));
            quit(99);
        }
    }

    while (getaline(fp)) {
        switch (type) {
            case 'I':
            case 'P':
            if (a_removeFlag) {
                continue;
            }
            break;

            case 'R':
            if (!a_removeFlag) {
                continue;
            }
            break;

            default:
            errflg++;
            progerr(ERR_UNKNOWN_DEPENDENCY, type);
            break;
        }

        /* check to see if any versions listed are installed */
        pkgexist = pkgokay = 0;
        i = 0;
        if (strchr(abbrev, '.')) {
            progerr(ERR_PKGABRV, abbrev);
        }
        (void) snprintf(wabbrev, sizeof (wabbrev), "%s.*", abbrev);

        do {
            inst = fpkginst(wabbrev, alist[i], vlist[i]);
            if (inst && (pkginfo(&info, inst, NULL, NULL) == 0)) {
                pkgexist++;
                if (info.status == PI_INSTALLED)
                    pkgokay++;
            }
        } while (++i < nlist);
        (void) fpkginst(NULL);  /* force closing/rewind of files */

        if (!info.name) {
            info.name = name;
        }

        switch (type) {
            case 'I':
            incompat(abbrev, info.name, a_preinstallCheck);
            break;

            case 'P':
            prereq(abbrev, name, a_preinstallCheck);
            break;

            case 'R':
            deponme(abbrev, info.name, a_preinstallCheck);
        }
    }
    (void) fclose(fp);

done:
    if (a_removeFlag) {
        ckrdeps(a_preinstallCheck);
    }

    return (errflg);
}

void
setUpdate(void)
{
    is_update = 1;
}

int
isUpdate(void)
{
    return ((is_update) ? 1 : 0);
}

/*
 * *****************************************************************************
 * static internal (private) functions
 * *****************************************************************************
 */

static void
incompat(char *pkginst, char *pkgname, boolean_t a_preinstallCheck)
{
    char buf[512];

    if (!pkgexist)
        return;

    errflg++;
    if (a_preinstallCheck == B_TRUE) {
        (void) fprintf(stdout, "incompat=%s\n", pkginst);
        return;
    }

    logerr(ERR_WARNING);
    (void) snprintf(buf, sizeof (buf), ERR_INCOMP_VERS, pkginst, pkgname);
    puttext(stderr, buf, 4, 0);
    (void) putc('\n', stderr);
}

static void
prereq(char *pkginst, char *pkgname, boolean_t a_preinstallCheck)
{
    register int i;
    char buf[512];

    if (pkgokay) {
        return;
    }

    errflg++;

    if (a_preinstallCheck == B_TRUE) {
        if (pkgexist) {
            (void) fprintf(stdout,
                "prerequisite-incomplete=%s\n", pkginst);
        } else {
            (void) fprintf(stdout,
                "prerequisite-installed=%s\n", pkginst);
        }
        return;
    }

    logerr(ERR_WARNING);
    if (pkgexist) {
        (void) snprintf(buf, sizeof (buf), ERR_PRENCI, pkginst,
                    pkgname);
        puttext(stderr, buf, 4, 0);
        (void) putc('\n', stderr);
    } else {
        (void) snprintf(buf, sizeof (buf), ERR_PREREQ, pkginst,
                    pkgname);
        if (nlist) {
            (void) strcat(buf, ERR_VALINST);
        }
        puttext(stderr, buf, 4, 0);
        (void) putc('\n', stderr);
        for (i = 0; i < nlist; i++) {
            (void) printf("          ");
            if (alist[i])
                (void) printf("(%s) ", alist[i]);
            if (vlist[i])
                (void) printf("%s", vlist[i]);
            (void) printf("\n");
        }
    }
}

static void
deponme(char *pkginst, char *pkgname, boolean_t a_preinstallCheck)
{
    char buf[512];

    if (!pkgexist)
        return;

    errflg++;

    if (a_preinstallCheck == B_TRUE) {
        if (!pkgname || !pkgname[0]) {
            (void) snprintf(buf, sizeof (buf),
                    "dependonme=%s", pkginst);
        } else {
            (void) snprintf(buf, sizeof (buf),
                "dependsonme=%s:%s", pkginst, pkgname);
        }
        (void) fprintf(stdout, "%s\n", buf);
        return;
    }

    logerr(ERR_WARNING);
    if (!pkgname || !pkgname[0]) {
        (void) snprintf(buf, sizeof (buf), ERR_DEPONME, pkginst);
    } else {
        (void) snprintf(buf, sizeof (buf), ERR_DEPNAM, pkginst,
                pkgname);
    }
    puttext(stderr, buf, 4, 0);
    (void) putc('\n', stderr);
}

static int
getaline(FILE *fp)
{
    register int i, c, found;
    char *pt, *new, line[LSIZE];

    abbrev[0] = name[0] = type = '\0';

    for (i = 0; i < nlist; i++) {
        if (alist[i]) {
            free(alist[i]);
            alist[i] = NULL;
        }
        if (vlist[i]) {
            free(vlist[i]);
            vlist[i] = NULL;
        }
    }
    alist[0] = vlist[0] = NULL;

    found = (-1);
    nlist = 0;
    while ((c = getc(fp)) != EOF) {
        (void) ungetc(c, fp);
        if ((found >= 0) && !isspace(c))
            return (1);

        if (!fgets(line, LSIZE, fp))
            break;

        for (pt = line; isspace(*pt); /* void */)
            pt++;
        if (!*pt || (*pt == '#'))
            continue;

        if (pt == line) {
            /* begin new definition */
            /* LINTED variable format specifier to sscanf(): */
            (void) sscanf(line, SSCANF_FORMAT, &type, abbrev, name);
            found++;
            continue;
        }
        if (found < 0)
            return (0);

        if (*pt == '(') {
            /* architecture is specified */
            if (new = strchr(pt, ')'))
                *new++ = '\0';
            else
                return (-1); /* bad specification */
            alist[found] = qstrdup(pt+1);
            pt = new;
        }
        while (isspace(*pt))
            pt++;
        if (*pt) {
            vlist[found] = qstrdup(pt);
            if (pt = strchr(vlist[found], '\n'))
                *pt = '\0';
        }
        found++;
        nlist++;
    }
    return ((found >= 0) ? 1 : 0);
}

static void
ckrdeps(boolean_t a_preinstallCheck)
{
    struct dirent *drp;
    DIR *dirfp;
    FILE    *fp;
    char    depfile[PATH_MAX+1];

    if ((dirfp = opendir(pkgdir)) == NULL)
        return;

    while ((drp = readdir(dirfp)) != NULL) {
        if (drp->d_name[0] == '.')
            continue;

        if (strcmp(drp->d_name, rmpkginst) == 0)
            continue; /* others don't include me */
        (void) snprintf(depfile, sizeof (depfile),
                "%s/%s/%s", pkgdir, drp->d_name, DEPEND_FILE);
        if ((fp = fopen(depfile, "r")) == NULL)
            continue;

        ckpreq(fp, drp->d_name, a_preinstallCheck);
    }
    (void) closedir(dirfp);
}

static void
ckpreq(FILE *fp, char *dname, boolean_t a_preinstallCheck)
{
    register int i;
    char    *inst;

    while (getaline(fp)) {
        if (type != 'P')
            continue;

        if (strcmp(abbrev, rmpkg))
            continue;

        /* see if package is installed */
        i = 0;
        if (strchr(abbrev, '.') == 0) {
            (void) strcat(abbrev, ".*");
        }
        pkgexist = 1;

        do {
            if (inst = fpkginst(abbrev, alist[i], vlist[i])) {
                if (strcmp(inst, rmpkginst) == 0) {
                    deponme(dname, "", a_preinstallCheck);
                    (void) fclose(fp);
                    (void) fpkginst(NULL);
                    return;
                }
            }
        } while (++i < nlist);
        (void) fpkginst(NULL);
    }
    (void) fclose(fp);
}