freebsd-skq/usr.sbin/sysinstall/index.c

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <ncurses.h>
#include <dialog.h>
#include "sysinstall.h"

/* Macros and magic values */
#define MAX_MENU	13

/* Smarter strdup */
inline char *
_strdup(char *ptr)
{
    return ptr ? strdup(ptr) : ptr;
}

static char *descrs[] = {
    "Package Selection", "To select a package or category, move to it and select OK.\nTo remove a package, select it again.  To go to a previous menu, select\nUp or Cancel. To search for a package by name, press ESC.",
    "Package Targets", "These are the packages you've selected for extraction.\n\nIf you're sure of these choices, select OK.\nIf not, select Cancel to go back to the package selection menu.\n",
    "All", "All available packages in all categories.",
    "applications", "User application software.",
    "archivers", "Utilities for archiving and unarchiving data.",
    "audio", "Audio utilities - most require a supported sound card.",
    "benchmarks", "Utilities for measuring system performance.",
    "benchmarking", "Utilities for measuring system performance.",
    "cad", "Computer Aided Design utilities.",
    "comms", "Communications utilities.",
    "databases", "Database software.",
    "devel", "Software development utilities and libraries.",
    "development", "Software development utilities and libraries.",
    "documentation", "Document preparation utilities.",
    "editors", "Common text editors.",
    "emulation", "Utilities for emulating other OS types.",
    "emulators", "Utilities for emulating other OS types.",
    "games", "Various and sundry amusements.",
    "graphics", "Graphics libraries and utilities.",
    "japanese", "Ported software for the Japanese market.",
    "lang", "Computer languages.",
    "languages", "Computer languages.",
    "libraries", "Software development libraries.",
    "mail", "Electronic mail packages and utilities.",
    "math", "Mathematical computation software.",
    "net", "Networking utilities.",
    "networking", "Networking utilities.",
    "news", "USENET News support software.",
    "numeric", "Mathematical computation software.",
    "orphans", "Packages without a home elsewhere.",
    "plan9", "Software from the plan9 Operating System.",
    "print", "Utilities for dealing with printing.",
    "printing", "Utilities for dealing with printing.",
    "programming", "Software development utilities and libraries.",
    "russian", "Ported software for the Russian market.",
    "security", "System security software.",
    "shells", "Various shells (tcsh, bash, etc).",
    "sysutils", "Various system utilities.",
    "troff", "TROFF Text formatting utilities.",
    "utils", "Various user utilities.",
    "utilities", "Various user utilities.",
    "x11", "X Window System based utilities.",
    NULL, NULL,
};

static char *
fetch_desc(char *name)
{
    int i;

    for (i = 0; descrs[i]; i += 2) {
	if (!strcmp(descrs[i], name))
	    return descrs[i + 1];
    }
    return "No description provided";
}

static PkgNodePtr
new_pkg_node(char *name, node_type type)
{
    PkgNodePtr tmp = malloc(sizeof(PkgNode));

    if (!tmp) {
	fprintf(stderr, "Out of memory - unable to allocate a new package node!\n");
	exit(1);
    }
    bzero(tmp, sizeof(PkgNode));
    tmp->name = _strdup(name);
    tmp->type = type;
    return tmp;
}

static IndexEntryPtr
new_index(char *name, char *pathto, char *prefix, char *comment, char *descr, char *maint)
{
    IndexEntryPtr tmp = malloc(sizeof(IndexEntry));

    if (!tmp) {
	fprintf(stderr, "Out of memory - unable to allocate a new index node!\n");
	exit(1);
    }

    bzero(tmp, sizeof(IndexEntry));
    tmp->name =		_strdup(name);
    tmp->path =		_strdup(pathto);
    tmp->prefix =	_strdup(prefix);
    tmp->comment =	_strdup(comment);
    tmp->descrfile =	_strdup(descr);
    tmp->maintainer =	_strdup(maint);
    return tmp;
}

static char *
clip(char *str, int len)
{
    int len2;

    len2 = strlen(str);
    if (len2 > len)
	str[len] = '\0';
    return str;
}

static void
index_register(PkgNodePtr top, char *where, IndexEntryPtr ptr)
{
    PkgNodePtr p, q;

    q = NULL;
    p = top->kids;
    while (p) {
	if (!strcmp(p->name, where)) {
	    q = p;
	    break;
	}
	p = p->next;
    }
    if (!p) {
	/* Add new category */
	q = new_pkg_node(where, PLACE);
	q->desc = fetch_desc(where);
	q->next = top->kids;
	top->kids = q;
    }
    p = new_pkg_node(ptr->name, PACKAGE);
    p->desc = clip(ptr->comment, 56 - (strlen(ptr->name) / 2));
    p->data = ptr;
    p->next = q->kids;
    q->kids = p;
}

static int
copy_to_sep(char *to, char *from, int sep)
{
    char *tok;

    tok = strchr(from, sep);
    if (!tok) {
	fprintf(stderr, "missing '%c' token.\n", sep);
	*to = '\0';
	return 0;
    }
    *tok = '\0';
    strcpy(to, from);
    return tok + 1 - from;
}

int
index_parse(FILE *fp, char *name, char *pathto, char *prefix, char *comment, char *descr, char *maint,
	    char *cats, char *keys)
{
    char line[1024];
    char *cp;
    int len;

    if (!fgets(line, 1024, fp)) {
	if (feof(fp))
	    return EOF;
	else
	    return -2;
    }
    len = strlen(line);
    if (line[len - 1] == '\n')
	line[len - 1] = '\0';
    cp = line;
    cp += copy_to_sep(name, cp, '|');
    cp += copy_to_sep(pathto, cp, '|');
    cp += copy_to_sep(prefix, cp, '|');
    cp += copy_to_sep(comment, cp, '|');
    cp += copy_to_sep(descr, cp, '|');
    cp += copy_to_sep(maint, cp, '|');
    cp += copy_to_sep(cats, cp, '|');
    strcpy(keys, cp);
    return 0;
}

int
index_read(char *fname, PkgNodePtr papa)
{
    FILE *fp;
    int i;

    fp = fopen(fname, "r");
    if (!fp) {
	fprintf(stderr, "Unable to open index file `%s' for reading.\n", fname);
	i = -1;
    }
    else {
	i = index_fread(fp, papa);
	fclose(fp);
    }
    return i;
}

int
index_fread(FILE *fp, PkgNodePtr papa)
{
    char name[127], pathto[255], prefix[255], comment[255], descr[127], maint[127], cats[511], keys[511];

    while (!index_parse(fp, name, pathto, prefix, comment, descr, maint, cats, keys)) {
	char *cp, *cp2, tmp[511];
	IndexEntryPtr idx;

	idx = new_index(name, pathto, prefix, comment, descr, maint);
	/* For now, we only add things to menus if they're in categories.  Keywords are ignored */
	cp = strcpy(tmp, cats);
	while ((cp2 = strchr(cp, ' ')) != NULL) {
	    *cp2 = '\0';
	    index_register(papa, cp, idx);
	    cp = cp2 + 1;
	}
	index_register(papa, cp, idx);

	/* Add to special "All" category */
	index_register(papa, "All", idx);
    }
    fclose(fp);
    return 0;
}

void
index_init(PkgNodePtr top, PkgNodePtr plist)
{
    top->next = top->kids = NULL;
    top->name = "Package Selection";
    top->type = PLACE;
    top->desc = fetch_desc(top->name);

    plist->next = plist->kids = NULL;
    plist->name = "Package Targets";
    plist->type = PLACE;
    plist->desc = fetch_desc(plist->name);
}

void
index_entry_free(IndexEntryPtr top)
{
    safe_free(top->name);
    safe_free(top->path);
    safe_free(top->prefix);
    safe_free(top->comment);
    safe_free(top->descrfile);
    safe_free(top->maintainer);
    free(top);
}

void
index_node_free(PkgNodePtr top, PkgNodePtr plist)
{
    PkgNodePtr tmp;

    tmp = plist;
    while (tmp) {
	PkgNodePtr tmp2 = tmp->next;
	    
	safe_free(tmp);
	tmp = tmp2;
    }

    tmp = top;
    while (tmp) {
	free(tmp->name);
	if (tmp->type == PACKAGE && tmp->data)
	    index_entry_free((IndexEntryPtr)tmp->data);
	if (tmp->kids)
	    index_node_free(tmp->kids, NULL);
	tmp = tmp->next;
    }
}
	
void
index_print(PkgNodePtr top, int level)
{
    int i;

    while (top) {
	for (i = 0; i < level; i++) putchar('\t');
	printf("name [%s]: %s\n", top->type == PLACE ? "place" : "package", top->name);
	for (i = 0; i < level; i++) putchar('\t');
	printf("desc: %s\n", top->desc);
	if (top->kids)
	    index_print(top->kids, level + 1);
	top = top->next;
    }
}

/* Swap one node for another */
static void
swap_nodes(PkgNodePtr a, PkgNodePtr b)
{
    PkgNode tmp;

    tmp = *a;
    *a = *b;
    a->next = tmp.next;
    tmp.next = b->next;
    *b = tmp;
}

/* Use a disgustingly simplistic bubble sort to put our lists in order */
void
index_sort(PkgNodePtr top)
{
    PkgNodePtr p, q;

    /* Sort everything at the top level */
    p = top->kids;
    while (p) {
	q = top->kids;
	while (q) {
	    if (q->next && strcmp(q->name, q->next->name) > 0)
		swap_nodes(q, q->next);
	    q = q->next;
	}
	p = p->next;
    }

    /* Now sub-sort everything n levels down */
    p = top->kids;
    while (p) {
	if (p->kids)
	    index_sort(p);
	p = p->next;
    }
}

/* Since we only delete from cloned chains, this is easy */
void
index_delete(PkgNodePtr n)
{
    if (n->next)
	*n = *(n->next);
    else /* Kludgy end sentinal */
	n->name = NULL;
}

PkgNodePtr
index_search(PkgNodePtr top, char *str, PkgNodePtr *tp)
{
    PkgNodePtr p, sp;

    for (p = top->kids; p && p->name; p = p->next) {
	/* Subtract out the All category from searches */
	if (!strcmp(p->name, "All"))
	    continue;

	/* If tp == NULL, we're looking for an exact package match */
	if (!tp && !strcmp(p->name, str))
	    return p;

	/* If tp, we're looking for both a package and a pointer to the place it's in */
	if (tp && strstr(p->name, str)) {
	    *tp = top;
	    return p;
	}

	/* The usual recursion-out-of-laziness ploy */
	if (p->kids)
	    if ((sp = index_search(p, str, tp)) != NULL)
		return sp;
    }
    if (p && !p->name)
	p = NULL;
    return p;
}

int
index_menu(PkgNodePtr top, PkgNodePtr plist, int *pos, int *scroll)
{
    int n, rval;
    int curr, max;
    PkgNodePtr sp, kp;
    char **nitems;
    char result[127];

    kp = top->kids;
    n = curr = max = 0;
    nitems = NULL;
    if (kp && kp->name && plist) {
	nitems = item_add_pair(nitems, "..", "RETURN TO PREVIOUS MENU.", &curr, &max);
	++n;
    }
    while (kp && kp->name) {
	nitems = item_add_pair(nitems, kp->name, kp->desc, &curr, &max);
	++n;
	kp = kp->next;
    }
    if (!n) {
	msgConfirm("The %s menu is empty.", top->name);
	return RET_DONE;
    }
    nitems = item_add(nitems, NULL, &curr, &max);
    dialog_clear();
    while (1) {
	rval = dialog_menu(top->name, top->desc, -1, -1, n > MAX_MENU ? MAX_MENU : n, n,
			   (unsigned char **)nitems, result, pos, scroll);
	if (!rval && plist && strcmp(result, "..")) {
	    kp = top->kids;
	    while (kp) {
		if (!strcmp(kp->name, result)) {
		    if (kp->type == PACKAGE) {
			sp = index_search(plist, result, NULL);
			if (sp) {
			    if (!msgYesNo("%s is already selected -\ndo you wish to unselect it?", result)) {
				standout();
				mvprintw(23, 0, "Deleting package %s from selection list.\n", kp->name);
				standend();
				refresh();
				index_delete(sp);
			    }
			}
			else {
			    PkgNodePtr n = (PkgNodePtr)malloc(sizeof(PkgNode));
			    
			    if (n) {
				*n = *kp;
				n->next = plist->kids;
				plist->kids = n;
				standout();
				mvprintw(23, 0, "Adding package %s to selection list\n", kp->name);
				standend();
				refresh();
			    }
			}
		    }
		    else {
			int p, s;
			
			p = s = 0;
			index_menu(kp, plist, &p, &s);
		    }
		    break;
		}
		kp = kp->next;
	    }
	}
	else if (rval == -1) {
	    static char *cp;
	    PkgNodePtr menu;

	    /* Search */
	    if ((cp = msgGetInput(cp, "Search by package name.  Please enter search string:")) != NULL) {
		PkgNodePtr p = index_search(top, cp, &menu);

		if (p) {
		    int pos, scroll;

		    /* These need to be set to point at the found item, actually.  Hmmm! */
		    pos = scroll = 0;
		    index_menu(menu, plist, &pos, &scroll);
		}
		else
		    msgConfirm("Search string: %s yielded no hits.", cp);
	    }
	}
	else {
	    dialog_clear();
	    items_free(nitems, &curr, &max);
	    return rval ? RET_FAIL : RET_SUCCESS;
	}
    }
}

void
index_extract(Device *dev, PkgNodePtr plist)
{
    PkgNodePtr tmp;
    char *cp;

    /*
     * What follows is kinda gross.  We have to essentially replicate the internals
     * of all the supported device get() methods since we don't want a file descriptor,
     * we want a file name for pkg_add.
     */
    tmp = plist->kids;
    while (tmp) {
	char target[511];

	target[0] = '\0';
	switch (dev->type) {
	case DEVICE_TYPE_UFS:
	case DEVICE_TYPE_TAPE:
	    sprintf(target, "%s/%s/packages/All/%s.tgz", (char *)dev->private, getenv(RELNAME), tmp->name);
	    if (!file_readable(target))
		sprintf(target, "%s/packages/All/%s.tgz", (char *)dev->private, tmp->name);
	    break;

	case DEVICE_TYPE_CDROM:
	    sprintf(target, "/cdrom/%s/packages/All/%s.tgz", getenv(RELNAME), tmp->name);
	    if (!file_readable(target))
		sprintf(target, "/cdrom/packages/All/%s.tgz", tmp->name);
	    break;

	case DEVICE_TYPE_DOS:
	case DEVICE_TYPE_NFS:
	    sprintf(target, "/dist/%s/packages/All/%s.tgz", getenv(RELNAME), tmp->name);
	    if (!file_readable(target))
		sprintf(target, "/dist/packages/All/%s.tgz", tmp->name);
	    break;

	case DEVICE_TYPE_FTP:
	    cp = getenv("ftp");
	    if (cp) {
		sprintf(target, "%s/packages/All/%s.tgz", cp, tmp->name);
		if (isDebug)
		    msgDebug("Media type is FTP, trying for: %s\n", target);
		if (vsystem("/usr/sbin/pkg_add %s%s", isDebug() ? "-v " : "", target)) {
		    if (optionIsSet(OPT_NO_CONFIRM))
			msgNotify("Unable to get package %s from %s..", tmp->name, cp);
		    else
			msgConfirm("Unable to get package %s from %s..", tmp->name, cp);
		}
	    }
	    else {
		msgConfirm("FTP site not chosen - please visit the media\n"
			   "menu and correct this problem before trying again.");
		return;
	    }
	    continue;

	case DEVICE_TYPE_FLOPPY:
	default:
	    msgConfirm("Selected media type is unsupported for package installation.\n"
		       "Please change the media type and retry this operation.");
	    return;
	}

	if (target[0]) {
	    if (isDebug())
		msgDebug("Media type is %d, target is %s\n", dev->type, target);
	    if (file_readable(target)) {
		msgNotify("Extracting %s..", target);
		if (vsystem("/usr/sbin/pkg_add %s%s", isDebug() ? "-v " : "", target)) {
		    if (optionIsSet(OPT_NO_CONFIRM))
			msgNotify("Error extracting package %s..", target);
		    else
			msgConfirm("Error extracting package %s..", target);
		}
		if (dev->type == DEVICE_TYPE_TAPE)
		    unlink(target);
	    }
	    else {
		if (optionIsSet(OPT_NO_CONFIRM))
		    msgNotify("Unable to locate package %s..", target);
		else
		    msgConfirm("Unable to locate package %s..", target);
	    }
	}
	tmp = tmp->next;
    }
    return;
}