perform.c revision 194497 
1/*
2 * FreeBSD install - a package for the installation and maintainance
3 * of non-core utilities.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * Jordan K. Hubbard
15 * 23 Aug 1993
16 *
17 * This is the main body of the info module.
18 *
19 */
20
21#include <sys/cdefs.h>
22__FBSDID("$FreeBSD: head/usr.sbin/pkg_install/info/perform.c 194497 2009-06-19 17:07:38Z brian $");
23
24#include "lib.h"
25#include "info.h"
26#include <err.h>
27#include <signal.h>
28
29static int pkg_do(char *);
30static int find_pkg(struct which_head *);
31static int cmp_path(const char *, const char *, const char *);
32static char *abspath(const char *);
33static int find_pkgs_by_origin(const char *);
34static int matched_packages(char **pkgs);
35
36int
37pkg_perform(char **pkgs)
38{
39    char **matched;
40    int err_cnt = 0;
41    int i, errcode;
42
43    signal(SIGINT, cleanup);
44
45    /* Overriding action? */
46    if (Flags & SHOW_PKGNAME) {
47	return matched_packages(pkgs);
48    } else if (CheckPkg) {
49	return isinstalledpkg(CheckPkg) > 0 ? 0 : 1;
50	/* Not reached */
51    } else if (!TAILQ_EMPTY(whead)) {
52	return find_pkg(whead);
53    } else if (LookUpOrigin != NULL) {
54	return find_pkgs_by_origin(LookUpOrigin);
55    }
56
57    if (MatchType != MATCH_EXACT) {
58	matched = matchinstalled(MatchType, pkgs, &errcode);
59	if (errcode != 0)
60	    return 1;
61	    /* Not reached */
62
63	if (matched != NULL)
64	    pkgs = matched;
65	else switch (MatchType) {
66	    case MATCH_GLOB:
67		break;
68	    case MATCH_ALL:
69		warnx("no packages installed");
70		return 0;
71		/* Not reached */
72	    case MATCH_REGEX:
73	    case MATCH_EREGEX:
74		warnx("no packages match pattern(s)");
75		return 1;
76		/* Not reached */
77	    default:
78		break;
79	}
80    }
81
82    for (i = 0; pkgs[i]; i++)
83	err_cnt += pkg_do(pkgs[i]);
84
85    return err_cnt;
86}
87
88static int
89pkg_do(char *pkg)
90{
91    Boolean installed = FALSE, isTMP = FALSE;
92    char log_dir[FILENAME_MAX];
93    char fname[FILENAME_MAX];
94    Package plist;
95    FILE *fp;
96    struct stat sb;
97    const char *cp = NULL;
98    int code = 0;
99
100    if (isURL(pkg)) {
101	if ((cp = fileGetURL(NULL, pkg, KeepPackage)) != NULL) {
102	    if (!getcwd(fname, FILENAME_MAX))
103		upchuck("getcwd");
104	    isTMP = TRUE;
105	} else {
106	    goto bail;
107	}
108    }
109    else if (fexists(pkg) && isfile(pkg)) {
110	int len;
111
112	if (*pkg != '/') {
113	    if (!getcwd(fname, FILENAME_MAX))
114		upchuck("getcwd");
115	    len = strlen(fname);
116	    snprintf(&fname[len], FILENAME_MAX - len, "/%s", pkg);
117	}
118	else
119	    strcpy(fname, pkg);
120	cp = fname;
121    }
122    else {
123	if ((cp = fileFindByPath(NULL, pkg)) != NULL)
124	    strncpy(fname, cp, FILENAME_MAX);
125    }
126    if (cp) {
127	if (!isURL(pkg)) {
128	    /*
129	     * Apply a crude heuristic to see how much space the package will
130	     * take up once it's unpacked.  I've noticed that most packages
131	     * compress an average of 75%, but we're only unpacking the + files so
132	     * be very optimistic.
133	     */
134	    if (stat(fname, &sb) == FAIL) {
135	        warnx("can't stat package file '%s'", fname);
136	        code = 1;
137	        goto bail;
138	    }
139	    make_playpen(PlayPen, sb.st_size / 2);
140	    if (unpack(fname, "'+*'")) {
141		warnx("error during unpacking, no info for '%s' available", pkg);
142		code = 1;
143		goto bail;
144	    }
145	}
146    }
147    /* It's not an uninstalled package, try and find it among the installed */
148    else {
149	int isinstalled = isinstalledpkg(pkg);
150	if (isinstalled < 0) {
151	    warnx("the package info for package '%s' is corrupt", pkg);
152	    return 1;
153	} else if (isinstalled == 0) {
154	    warnx("can't find package '%s' installed or in a file!", pkg);
155	    return 1;
156	}
157	sprintf(log_dir, "%s/%s", LOG_DIR, pkg);
158	if (chdir(log_dir) == FAIL) {
159	    warnx("can't change directory to '%s'!", log_dir);
160	    return 1;
161	}
162	installed = TRUE;
163    }
164
165    /* Suck in the contents list */
166    plist.head = plist.tail = NULL;
167    fp = fopen(CONTENTS_FNAME, "r");
168    if (!fp) {
169	warnx("unable to open %s file", CONTENTS_FNAME);
170	code = 1;
171	goto bail;
172    }
173    /* If we have a prefix, add it now */
174    read_plist(&plist, fp);
175    fclose(fp);
176
177    /*
178     * Index is special info type that has to override all others to make
179     * any sense.
180     */
181    if (Flags & SHOW_INDEX) {
182	char tmp[FILENAME_MAX];
183
184	snprintf(tmp, FILENAME_MAX, "%-19s ", pkg);
185	show_index(tmp, COMMENT_FNAME);
186    }
187    else {
188	/* Start showing the package contents */
189	if (!Quiet)
190	    printf("%sInformation for %s:\n\n", InfoPrefix, pkg);
191	else if (QUIET)
192	    printf("%s%s:", InfoPrefix, pkg);
193	if (Flags & SHOW_COMMENT)
194	    show_file("Comment:\n", COMMENT_FNAME);
195	if (Flags & SHOW_DEPEND)
196	    show_plist("Depends on:\n", &plist, PLIST_PKGDEP, FALSE);
197	if ((Flags & SHOW_REQBY) && !isemptyfile(REQUIRED_BY_FNAME))
198	    show_file("Required by:\n", REQUIRED_BY_FNAME);
199	if (Flags & SHOW_DESC)
200	    show_file("Description:\n", DESC_FNAME);
201	if ((Flags & SHOW_DISPLAY) && fexists(DISPLAY_FNAME))
202	    show_file("Install notice:\n", DISPLAY_FNAME);
203	if (Flags & SHOW_PLIST)
204	    show_plist("Packing list:\n", &plist, (plist_t)0, TRUE);
205	if (Flags & SHOW_REQUIRE && fexists(REQUIRE_FNAME))
206	    show_file("Requirements script:\n", REQUIRE_FNAME);
207	if ((Flags & SHOW_INSTALL) && fexists(INSTALL_FNAME))
208	    show_file("Install script:\n", INSTALL_FNAME);
209	if ((Flags & SHOW_INSTALL) && fexists(POST_INSTALL_FNAME))
210	    show_file("Post-Install script:\n", POST_INSTALL_FNAME);
211	if ((Flags & SHOW_DEINSTALL) && fexists(DEINSTALL_FNAME))
212	    show_file("De-Install script:\n", DEINSTALL_FNAME);
213	if ((Flags & SHOW_DEINSTALL) && fexists(POST_DEINSTALL_FNAME))
214	    show_file("Post-DeInstall script:\n", POST_DEINSTALL_FNAME);
215	if ((Flags & SHOW_MTREE) && fexists(MTREE_FNAME))
216	    show_file("mtree file:\n", MTREE_FNAME);
217	if (Flags & SHOW_PREFIX)
218	    show_plist("Prefix(s):\n", &plist, PLIST_CWD, FALSE);
219	if (Flags & SHOW_FILES)
220	    show_files("Files:\n", &plist);
221	if ((Flags & SHOW_SIZE) && installed)
222	    show_size("Package Size:\n", &plist);
223	if ((Flags & SHOW_CKSUM) && installed)
224	    show_cksum("Mismatched Checksums:\n", &plist);
225	if (Flags & SHOW_ORIGIN)
226	    show_origin("Origin:\n", &plist);
227	if (Flags & SHOW_FMTREV)
228	    show_fmtrev("Packing list format revision:\n", &plist);
229	if (!Quiet)
230	    puts(InfoPrefix);
231    }
232    free_plist(&plist);
233 bail:
234    leave_playpen();
235    if (isTMP)
236	unlink(fname);
237    return code;
238}
239
240void
241cleanup(int sig)
242{
243    static int in_cleanup = 0;
244
245    if (!in_cleanup) {
246	in_cleanup = 1;
247	leave_playpen();
248    }
249    if (sig)
250	exit(1);
251}
252
253/*
254 * Return an absolute path, additionally removing all .'s, ..'s, and extraneous
255 * /'s, as realpath() would, but without resolving symlinks, because that can
256 * potentially screw up our comparisons later.
257 */
258static char *
259abspath(const char *pathname)
260{
261    char *tmp, *tmp1, *resolved_path;
262    char *cwd = NULL;
263    int len;
264
265    if (pathname[0] != '/') {
266	cwd = getcwd(NULL, MAXPATHLEN);
267	asprintf(&resolved_path, "%s/%s/", cwd, pathname);
268    } else
269	asprintf(&resolved_path, "%s/", pathname);
270
271    if (resolved_path == NULL)
272	errx(2, NULL);
273
274    if (cwd != NULL)
275	free(cwd);
276
277    while ((tmp = strstr(resolved_path, "//")) != NULL)
278	strcpy(tmp, tmp + 1);
279
280    while ((tmp = strstr(resolved_path, "/./")) != NULL)
281	strcpy(tmp, tmp + 2);
282
283    while ((tmp = strstr(resolved_path, "/../")) != NULL) {
284	*tmp = '\0';
285	if ((tmp1 = strrchr(resolved_path, '/')) == NULL)
286	   tmp1 = resolved_path;
287	strcpy(tmp1, tmp + 3);
288    }
289
290    len = strlen(resolved_path);
291    if (len > 1 && resolved_path[len - 1] == '/')
292	resolved_path[len - 1] = '\0';
293
294    return resolved_path;
295}
296
297/*
298 * Comparison to see if the path we're on matches the
299 * one we are looking for.
300 */
301static int
302cmp_path(const char *target, const char *current, const char *cwd)
303{
304    char *resolved, *temp;
305    int rval;
306
307    asprintf(&temp, "%s/%s", cwd, current);
308    if (temp == NULL)
309        errx(2, NULL);
310
311    /*
312     * Make sure there's no multiple /'s or other weird things in the PLIST,
313     * since some plists seem to have them and it could screw up our strncmp.
314     */
315    resolved = abspath(temp);
316
317    if (strcmp(target, resolved) == 0)
318	rval = 1;
319    else
320	rval = 0;
321
322    free(temp);
323    free(resolved);
324    return rval;
325}
326
327/*
328 * Look through package dbs in LOG_DIR and find which
329 * packages installed the files in which_list.
330 */
331static int
332find_pkg(struct which_head *which_list)
333{
334    char **installed;
335    int errcode, i;
336    struct which_entry *wp;
337
338    TAILQ_FOREACH(wp, which_list, next) {
339	const char *msg = "file cannot be found";
340	char *tmp;
341
342	wp->skip = TRUE;
343	/* If it's not a file, we'll see if it's an executable. */
344	if (isfile(wp->file) == FALSE) {
345	    if (strchr(wp->file, '/') == NULL) {
346		tmp = vpipe("/usr/bin/which %s", wp->file);
347		if (tmp != NULL) {
348		    strlcpy(wp->file, tmp, PATH_MAX);
349		    wp->skip = FALSE;
350		    free(tmp);
351		} else
352		    msg = "file is not in PATH";
353	    }
354	} else {
355	    tmp = abspath(wp->file);
356	    if (isfile(tmp)) {
357	    	strlcpy(wp->file, tmp, PATH_MAX);
358	    	wp->skip = FALSE;
359	    }
360	    free(tmp);
361	}
362	if (wp->skip == TRUE)
363	    warnx("%s: %s", wp->file, msg);
364    }
365
366    installed = matchinstalled(MATCH_ALL, NULL, &errcode);
367    if (installed == NULL)
368        return errcode;
369
370    for (i = 0; installed[i] != NULL; i++) {
371     	FILE *fp;
372     	Package pkg;
373     	PackingList itr;
374     	char *cwd = NULL;
375     	char tmp[PATH_MAX];
376
377	snprintf(tmp, PATH_MAX, "%s/%s/%s", LOG_DIR, installed[i],
378		 CONTENTS_FNAME);
379	fp = fopen(tmp, "r");
380	if (fp == NULL) {
381	    warn("%s", tmp);
382	    return 1;
383	}
384
385	pkg.head = pkg.tail = NULL;
386	read_plist(&pkg, fp);
387	fclose(fp);
388	for (itr = pkg.head; itr != pkg.tail; itr = itr->next) {
389	    if (itr->type == PLIST_CWD) {
390		cwd = itr->name;
391	    } else if (itr->type == PLIST_FILE) {
392		TAILQ_FOREACH(wp, which_list, next) {
393		    if (wp->skip == TRUE)
394			continue;
395		    if (!cmp_path(wp->file, itr->name, cwd))
396			continue;
397		    if (wp->package[0] != '\0') {
398			warnx("both %s and %s claim to have installed %s\n",
399			      wp->package, installed[i], wp->file);
400		    } else {
401			strlcpy(wp->package, installed[i], PATH_MAX);
402		    }
403		}
404	    }
405	}
406	free_plist(&pkg);
407    }
408
409    TAILQ_FOREACH(wp, which_list, next) {
410	if (wp->package[0] != '\0') {
411	    if (Quiet)
412		puts(wp->package);
413	    else
414		printf("%s was installed by package %s\n", \
415		       wp->file, wp->package);
416	}
417    }
418    while (!TAILQ_EMPTY(which_list)) {
419	wp = TAILQ_FIRST(which_list);
420	TAILQ_REMOVE(which_list, wp, next);
421	free(wp);
422    }
423
424    free(which_list);
425    return 0;
426}
427
428/*
429 * Look through package dbs in LOG_DIR and find which
430 * packages have the given origin. Don't use read_plist()
431 * because this increases time necessary for lookup by 40
432 * times, as we don't really have to parse all plist to
433 * get origin.
434 */
435static int
436find_pkgs_by_origin(const char *origin)
437{
438    char **matched;
439    int errcode, i;
440
441    if (!Quiet)
442	printf("The following installed package(s) has %s origin:\n", origin);
443
444    matched = matchbyorigin(origin, &errcode);
445    if (matched == NULL)
446	return errcode;
447
448    for (i = 0; matched[i] != NULL; i++)
449	puts(matched[i]);
450
451    return 0;
452}
453
454/*
455 * List only the matching package names.
456 * Mainly intended for scripts.
457 */
458static int
459matched_packages(char **pkgs)
460{
461    char **matched;
462    int i, errcode;
463
464    matched = matchinstalled(MatchType == MATCH_GLOB ? MATCH_NGLOB : MatchType, pkgs, &errcode);
465
466    if (errcode != 0 || matched == NULL)
467	return 1;
468
469    for (i = 0; matched[i]; i++)
470	if (!Quiet)
471	    printf("%s\n", matched[i]);
472	else if (QUIET)
473	    printf("%s%s\n", InfoPrefix, matched[i]);
474
475    return 0;
476}
477