perform.c revision 7713 
1#ifndef lint
2static const char *rcsid = "$Id: perform.c,v 1.13 1994/12/06 00:51:34 jkh Exp $";
3#endif
4
5/*
6 * FreeBSD install - a package for the installation and maintainance
7 * of non-core utilities.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * Jordan K. Hubbard
19 * 18 July 1993
20 *
21 * This is the main body of the add module.
22 *
23 */
24
25#include "lib.h"
26#include "add.h"
27
28#include <signal.h>
29#include <sys/wait.h>
30
31static int pkg_do(char *);
32static int sanity_check(char *);
33static char LogDir[FILENAME_MAX];
34
35
36int
37pkg_perform(char **pkgs)
38{
39    int i, err_cnt = 0;
40
41    signal(SIGINT, cleanup);
42    signal(SIGHUP, cleanup);
43
44    if (AddMode == SLAVE)
45	err_cnt = pkg_do(NULL);
46    else {
47	for (i = 0; pkgs[i]; i++)
48	    err_cnt += pkg_do(pkgs[i]);
49    }
50    return err_cnt;
51}
52
53static Package Plist;
54
55/* This is seriously ugly code following.  Written very fast! */
56static int
57pkg_do(char *pkg)
58{
59    char pkg_fullname[FILENAME_MAX];
60    char home[FILENAME_MAX];
61    FILE *cfile;
62    int code = 0;
63    PackingList p;
64    struct stat sb;
65
66    /* Reset some state */
67    if (Plist.head)
68	free_plist(&Plist);
69    LogDir[0] = '\0';
70    if (AddMode == SLAVE) {
71	char tmp_dir[FILENAME_MAX];
72
73	fgets(tmp_dir, FILENAME_MAX, stdin);
74	tmp_dir[strlen(tmp_dir) - 1] = '\0'; /* pesky newline! */
75	if (chdir(tmp_dir) == FAIL) {
76	    whinge("pkg_add in SLAVE mode can't chdir to %s.", tmp_dir);
77	    return 1;
78	}
79	read_plist(&Plist, stdin);
80    }
81    else {
82	if (!getcwd(home, FILENAME_MAX))
83	    upchuck("getcwd");
84
85	if (pkg[0] == '/')	/* full pathname? */
86	    strcpy(pkg_fullname, pkg);
87	else
88	    sprintf(pkg_fullname, "%s/%s", home, pkg);
89	if (!fexists(pkg_fullname)) {
90	    whinge("Can't find package '%s'.", pkg_fullname);
91	    return 1;
92	}
93	/*
94	 * Apply a crude heuristic to see how much space the package will
95	 * take up once it's unpacked.  I've noticed that most packages
96	 * compress an average of 75%, so multiply by 4 for good measure.
97	 */
98	if (stat(pkg_fullname, &sb) == FAIL) {
99	    whinge("Can't stat package file '%s'.", pkg_fullname);
100	    return 1;
101	}
102	sb.st_size *= 4;
103	Home = make_playpen(PlayPen, sb.st_size);
104	if (unpack(pkg_fullname, NULL))
105	    return 1;
106
107	if (sanity_check(pkg_fullname))
108	    return 1;
109
110	cfile = fopen(CONTENTS_FNAME, "r");
111	if (!cfile) {
112	    whinge("Unable to open %s file.", CONTENTS_FNAME);
113	    goto fail;
114	}
115	read_plist(&Plist, cfile);
116	fclose(cfile);
117	if (Prefix) {
118	    /*
119	     * If we have a prefix, delete the first one we see and add this
120	     * one in place of it.
121	     */
122	    delete_plist(&Plist, FALSE, PLIST_CWD, NULL);
123	    add_plist_top(&Plist, PLIST_CWD, Prefix);
124	}
125	/* If we're running in MASTER mode, just output the plist and return */
126	if (AddMode == MASTER) {
127	    printf("%s\n", where_playpen());
128	    write_plist(&Plist, stdout);
129	    return 0;
130	}
131    }
132    setenv(PKG_PREFIX_VNAME,
133	   (p = find_plist(&Plist, PLIST_CWD)) ? p->name : NULL, 1);
134    PkgName = (p = find_plist(&Plist, PLIST_NAME)) ? p->name : "anonymous";
135    /* Protect against old packages with bogus @name fields */
136    sprintf(LogDir, "%s/%s", LOG_DIR, basename_of(PkgName));
137    if (isdir(LogDir)) {
138	whinge("Package `%s' already recorded as installed.\n", PkgName);
139	code = 1;
140	goto success;	/* close enough for government work */
141    }
142    for (p = Plist.head; p ; p = p->next) {
143	if (p->type != PLIST_PKGDEP)
144	    continue;
145	if (!Fake && vsystem("pkg_info -e %s", p->name)) {
146	    char tmp[120];
147
148	    sprintf(tmp, "%s/%s.tgz", Home, p->name);
149	    if (fexists(tmp)) {
150		if (Verbose)
151		    printf("Package `%s' depends on `%s':  Trying to load it.\n", PkgName, p->name);
152		if (vsystem("pkg_add %s", tmp)) {
153		    whinge("Autoload of dependency package `%s' failed!%s",
154			   p->name, Force ? " (proceeding anyway)" : "");
155		    if (!Force)
156			code++;
157		}
158		else if (Verbose)
159		    printf("Dependency `%s' loaded successfully.\n", p->name);
160	    }
161	    else {
162	    	whinge("Package `%s' depends on missing package `%s'%s.", PkgName,
163		   p->name, Force ? " (proceeding anyway)" : "");
164	    	if (!Force)
165		    code++;
166	    }
167	}
168    }
169    if (code != 0)
170	goto success;	/* close enough for government work */
171
172    if (fexists(REQUIRE_FNAME)) {
173	vsystem("chmod +x %s", REQUIRE_FNAME);	/* be sure */
174	if (Verbose)
175	    printf("Running requirements file first for %s..\n", PkgName);
176	if (!Fake && vsystem("./%s %s INSTALL", REQUIRE_FNAME, PkgName)) {
177	    whinge("Package %s fails requirements %s",
178		   pkg_fullname,
179		   Force ? "installing anyway" : "- not installed.");
180	    if (!Force) {
181		code = 1;
182		goto success;	/* close enough for government work */
183	    }
184	}
185    }
186    if (!NoInstall && fexists(INSTALL_FNAME)) {
187	vsystem("chmod +x %s", INSTALL_FNAME);	/* make sure */
188	if (Verbose)
189	    printf("Running install with PRE-INSTALL for %s..\n", PkgName);
190	if (!Fake && vsystem("./%s %s PRE-INSTALL", INSTALL_FNAME, PkgName)) {
191	    whinge("Install script returned error status.");
192	    code = 1;
193	    goto success;		/* nothing to uninstall yet */
194	}
195    }
196    extract_plist(home, &Plist);
197    if (!NoInstall && fexists(MTREE_FNAME)) {
198	if (Verbose)
199	    printf("Running mtree for %s..\n", PkgName);
200	p = find_plist(&Plist, PLIST_CWD);
201	if (Verbose)
202	    printf("mtree -u -f %s -d -e -p %s\n", MTREE_FNAME,
203		   p ? p->name : "/");
204	if (!Fake) {
205	    pid_t chpid;
206	    int rval, status;
207	    chpid = fork();
208	    if (chpid == 0) {
209		execl("/usr/sbin/mtree", "mtree", "-u", "-f", MTREE_FNAME,
210		      "-d", "-e", "-p", p ? p->name : "/");
211		perror("cannot execute mtree");
212		exit(3);
213	    }
214	    if (chpid == (pid_t) -1) {
215		warn("Cannot fork mtree");
216		code = 1;
217		goto fail;
218	    }
219	    if (waitpid(chpid, &status, 0) == -1) {
220		warn("Cannot wait for mtree");
221		code = 1;
222		goto fail;
223	    }
224	    if (!WIFEXITED(status)) {
225		whinge("Strange exit from mtree: %x", status);
226		code = 1;
227		goto fail;
228	    }
229#ifdef DEBUG
230	    whinge("mtree exits %d\n", WEXITSTATUS(status));
231#endif
232	    switch (WEXITSTATUS(status)) {
233	    case 0:
234		break;			/* normal */
235	    case 2:
236		whinge("\nWARNING: Mtree attempted some work which may not have completed.\n\tExamine the above output.\n\t(most likely it changed directory permissions)\n");
237		break;
238	    default:
239		whinge("Error status %d from mtree.", WEXITSTATUS(status));
240		code = 1;
241		goto fail;
242	    }
243	}
244    }
245    if (!NoInstall && fexists(INSTALL_FNAME)) {
246	if (Verbose)
247	    printf("Running install with POST-INSTALL for %s..\n", PkgName);
248	if (!Fake && vsystem("./%s %s POST-INSTALL", INSTALL_FNAME, PkgName)) {
249	    whinge("Install script returned error status.");
250	    code = 1;
251	    goto fail;
252	}
253    }
254    if (!NoRecord && !Fake) {
255	char contents[FILENAME_MAX];
256	FILE *cfile;
257
258	umask(022);
259	if (getuid() != 0)
260	    whinge("Not running as root - trying to record install anyway.");
261	if (!PkgName) {
262	    whinge("No package name!  Can't record package, sorry.");
263	    code = 1;
264	    goto success;	/* well, partial anyway */
265	}
266	/* Protect against old packages with bogus @name fields */
267	sprintf(LogDir, "%s/%s", LOG_DIR, basename_of(PkgName));
268	if (Verbose)
269	    printf("Attempting to record package into %s..\n", LogDir);
270	if (make_hierarchy(LogDir)) {
271	    whinge("Can't record package into '%s', you're on your own!",
272		   LogDir);
273	    bzero(LogDir, FILENAME_MAX);
274	    code = 1;
275	    goto success;	/* close enough for government work */
276	}
277	/* Make sure pkg_info can read the entry */
278	vsystem("chmod a+rx %s", LogDir);
279	if (fexists(DEINSTALL_FNAME))
280	    copy_file(".", DEINSTALL_FNAME, LogDir);
281	if (fexists(REQUIRE_FNAME))
282	    copy_file(".", REQUIRE_FNAME, LogDir);
283	sprintf(contents, "%s/%s", LogDir, CONTENTS_FNAME);
284	cfile = fopen(contents, "w");
285	if (!cfile) {
286	    whinge("Can't open new contents file '%s'!  Can't register pkg.",
287		   contents);
288	    goto success; /* can't log, but still keep pkg */
289	}
290	write_plist(&Plist, cfile);
291	fclose(cfile);
292	copy_file(".", DESC_FNAME, LogDir);
293	copy_file(".", COMMENT_FNAME, LogDir);
294	if (fexists(DISPLAY_FNAME))
295	    copy_file(".", DISPLAY_FNAME, LogDir);
296	for (p = Plist.head; p ; p = p->next) {
297	    if (p->type != PLIST_PKGDEP)
298		continue;
299	    if (Verbose)
300		printf("Attempting to record dependency on package `%s'\n",
301		       p->name);
302	    sprintf(contents, "%s/%s/%s", LOG_DIR, basename_of(p->name),
303		    REQUIRED_BY_FNAME);
304	    cfile = fopen(contents, "a");
305	    if (!cfile) {
306		whinge("Can't open dependency file '%s'!\n\tDependency registration incomplete.",
307		   contents);
308		continue;
309	    }
310	    fprintf(cfile, "%s\n", basename_of(PkgName));
311	    if (fclose(cfile) == EOF)
312		warn("Cannot properly close file %s", contents);
313	}
314	if (Verbose)
315	    printf("Package %s registered in %s\n", PkgName, LogDir);
316    }
317
318    if (p = find_plist(&Plist, PLIST_DISPLAY)) {
319	FILE *fp;
320	char buf[BUFSIZ];
321	fp = fopen(p->name, "r");
322	if (fp) {
323	    putc('\n', stdout);
324	    while (fgets(buf, sizeof(buf), fp))
325		fputs(buf, stdout);
326	    putc('\n', stdout);
327	    (void) fclose(fp);
328	} else
329	    warn("Cannot open display file `%s'.", p->name);
330    }
331
332    goto success;
333
334 fail:
335    /* Nuke the whole (installed) show, XXX but don't clean directories */
336    if (!Fake)
337	delete_package(FALSE, FALSE, &Plist);
338
339 success:
340    /* delete the packing list contents */
341    leave_playpen();
342
343    return code;
344}
345
346static int
347sanity_check(char *pkg)
348{
349    if (!fexists(CONTENTS_FNAME)) {
350	whinge("Package %s has no CONTENTS file!", pkg);
351	return 1;
352    }
353    if (!fexists(COMMENT_FNAME)) {
354	whinge("Package %s has no COMMENT file!", pkg);
355	return 1;
356    }
357    if (!fexists(DESC_FNAME)) {
358	whinge("Package %s has no DESC file!", pkg);
359	return 1;
360    }
361    return 0;
362}
363
364void
365cleanup(int signo)
366{
367    if (signo)
368	printf("Signal %d received, cleaning up..\n", signo);
369    if (Plist.head) {
370	if (!Fake)
371	    delete_package(FALSE, FALSE, &Plist);
372	free_plist(&Plist);
373    }
374    if (!Fake && LogDir[0])
375	vsystem("%s -rf %s", REMOVE_CMD, LogDir);
376    leave_playpen();
377}
378