summaryrefslogtreecommitdiff
path: root/src/apk.c
blob: a236b37c1870b7e8d417da4dad60ea9725e8d988 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
/* apk.c - Alpine Package Keeper (APK)
 *
 * Copyright (C) 2005-2008 Natanael Copa <n@tanael.org>
 * Copyright (C) 2008-2011 Timo Teräs <timo.teras@iki.fi>
 * All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published
 * by the Free Software Foundation. See http://www.gnu.org/ for details.
 */

#include <stdio.h>
#include <fcntl.h>
#include <ctype.h>
#include <errno.h>
#include <signal.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <getopt.h>
#include <unistd.h>
#include <sys/stat.h>

#include <openssl/crypto.h>
#ifndef OPENSSL_NO_ENGINE
#include <openssl/engine.h>
#endif

#include "apk_defines.h"
#include "apk_database.h"
#include "apk_applet.h"
#include "apk_blob.h"
#include "apk_print.h"
#include "apk_io.h"

char **apk_argv;

static struct apk_option generic_options[] = {
	{ 'h', "help",		"Show generic help or applet specific help" },
	{ 'p', "root",		"Install packages to DIR",
				required_argument, "DIR" },
	{ 'X', "repository",	"Use packages from REPO",
				required_argument, "REPO" },
	{ 'q', "quiet",		"Print less information" },
	{ 'v', "verbose",	"Print more information (can be doubled)" },
	{ 'i', "interactive",	"Ask confirmation for certain operations" },
	{ 'V', "version",	"Print program version and exit" },
	{ 'f', "force",		"Do what was asked even if it looks dangerous" },
	{ 'U', "update-cache",	"Update the repository cache" },
	{ 0x101, "progress",	"Show a progress bar" },
	{ 0x10f, "progress-fd",	"Write progress to fd", required_argument, "FD" },
	{ 0x110, "no-progress",	"Disable progress bar even for TTYs" },
	{ 0x102, "clean-protected", "Do not create .apk-new files to "
				"configuration dirs" },
	{ 0x106, "purge",	"Delete also modified configuration files on "
				"package removal" },
	{ 0x103, "allow-untrusted", "Blindly install packages with untrusted "
				"signatures or no signature at all" },
	{ 0x104, "simulate",	"Show what would be done without actually "
				"doing it" },
	{ 0x105, "wait",	"Wait for TIME seconds to get an exclusive "
				"repository lock before failing",
				required_argument, "TIME" },
	{ 0x107, "keys-dir",	"Override directory of trusted keys",
				required_argument, "KEYSDIR" },
	{ 0x108, "repositories-file", "Override repositories file",
				required_argument, "REPOFILE" },
	{ 0x109, "no-network",	"Do not use network (cache is still used)" },
	{ 0x111, "overlay-from-stdin", "Read list of overlay files from stdin" },
	{ 0x112, "arch", 	"Use architecture with --root",
				required_argument, "ARCH" },
#ifdef TEST_MODE
	{ 0x200, "test-repo",	"Repository", required_argument, "REPO" },
	{ 0x201, "test-instdb",	"Installed db", required_argument, "INSTALLED" },
	{ 0x202, "test-world",	"World", required_argument, "WORLD DEPS" },
#endif
};

static int version(void)
{
	printf("apk-tools " APK_VERSION ", compiled for " APK_DEFAULT_ARCH ".\n");
#ifdef TEST_MODE
	printf("TEST MODE BUILD. NOT FOR PRODUCTION USE.\n");
#endif
	return 0;
}

static int format_option(char *buf, size_t len, struct apk_option *o,
			 const char *separator)
{
	int i = 0;

	if (o->val <= 0xff && isalnum(o->val)) {
		i += snprintf(&buf[i], len - i, "-%c", o->val);
		if (o->name != NULL)
			i += snprintf(&buf[i], len - i, "%s", separator);
	}
	if (o->name != NULL)
		i += snprintf(&buf[i], len - i, "--%s", o->name);
	if (o->arg_name != NULL)
		i += snprintf(&buf[i], len - i, " %s", o->arg_name);

	return i;
}

static void print_usage(const char *cmd, const char *args, int num_opts,
		        struct apk_option *opts)
{
	struct apk_indent indent = { .indent = 11 };
	char word[128];
	int i, j;

	indent.x = printf("\nusage: apk %s", cmd) - 1;
	for (i = 0; i < num_opts; i++)
		if (opts[i].name != NULL) {
			j = 0;
			word[j++] = '[';
			j += format_option(&word[j], sizeof(word) - j, &opts[i], "|");
			word[j++] = ']';
			apk_print_indented(&indent, APK_BLOB_PTR_LEN(word, j));
		}
	if (args != NULL)
		apk_print_indented(&indent, APK_BLOB_STR(args));
	printf("\n");
}

static void print_options(int num_opts, struct apk_option *opts)
{
	struct apk_indent indent = { .indent = 26 };
	char word[128];
	int i;

	for (i = 0; i < num_opts; i++) {
		format_option(word, sizeof(word), &opts[i], ", ");
		indent.x = printf("  %-*s", indent.indent - 3, word);
		apk_print_indented_words(&indent, opts[i].help);
		printf("\n");
	}
}

static int usage(struct apk_applet *applet)
{
	version();
	if (applet == NULL) {
		struct apk_applet **a;

		print_usage("COMMAND", "[ARGS]...",
			    ARRAY_SIZE(generic_options), generic_options);

		printf("\nThe following commands are available:\n");
		for (a = &__start_apkapplets; a < &__stop_apkapplets; a++) {
			struct apk_indent indent = { .indent = 26 };

			indent.x = printf("  %-*s", indent.indent - 3, (*a)->name);
			apk_print_indented_words(&indent, (*a)->help);
			printf("\n");
		}
	} else {
		struct apk_indent indent = { .indent = 2 };

		print_usage(applet->name, applet->arguments,
			    applet->num_options, applet->options);
		printf("\nDescription:\n");
		apk_print_indented_words(&indent, applet->help);
		printf("\n");
	}
	printf("\nGeneric options:\n");
	print_options(ARRAY_SIZE(generic_options), generic_options);

	if (applet != NULL && applet->num_options > 0) {
		printf("\nOptions for %s command:\n", applet->name);
		print_options(applet->num_options, applet->options);
	}
	printf("\nThis apk has coffee making abilities.\n");

	return 1;
}

static struct apk_applet *find_applet(const char *name)
{
	struct apk_applet **a;

	for (a = &__start_apkapplets; a < &__stop_apkapplets; a++) {
		if (strcmp(name, (*a)->name) == 0)
			return *a;
	}

	return NULL;
}

static struct apk_applet *deduce_applet(int argc, char **argv)
{
	struct apk_applet *a;
	const char *prog;
	int i;

	prog = strrchr(argv[0], '/');
	if (prog == NULL)
		prog = argv[0];
	else
		prog++;

	if (strncmp(prog, "apk_", 4) == 0)
		return find_applet(prog + 4);

	for (i = 1; i < argc; i++) {
		if (argv[i][0] == '-')
			continue;

		a = find_applet(argv[i]);
		if (a != NULL)
			return a;
	}

	return NULL;
}

static struct apk_repository_list *apk_repository_new(const char *url)
{
	struct apk_repository_list *r = calloc(1,
			sizeof(struct apk_repository_list));
	if (r) {
		r->url = url;
		list_init(&r->list);
	}
	return r;
}

static void merge_options(struct option *opts, struct apk_option *ao, int num)
{
	int i;

	for (i = 0; i < num; i++, opts++, ao++) {
		opts->name = ao->name ?: "";
		opts->has_arg = ao->has_arg;
		opts->flag = NULL;
		opts->val = ao->val;
	}
	opts->name = NULL;
}

static void fini_openssl(void)
{
	EVP_cleanup();
#ifndef OPENSSL_NO_ENGINE
	ENGINE_cleanup();
#endif
	CRYPTO_cleanup_all_ex_data();
}

static void init_openssl(void)
{
	atexit(fini_openssl);
	OpenSSL_add_all_algorithms();
#ifndef OPENSSL_NO_ENGINE
	ENGINE_load_builtin_engines();
	ENGINE_register_all_complete();
#endif
}

static void on_sigwinch(int s)
{
	apk_reset_screen_width();
}

static void setup_terminal(void)
{
	setvbuf(stderr, NULL, _IOLBF, BUFSIZ);
	signal(SIGWINCH, on_sigwinch);
	signal(SIGPIPE, SIG_IGN);
}

static void setup_automatic_flags(void)
{
	if (!isatty(STDOUT_FILENO) || !isatty(STDERR_FILENO) ||
	    !isatty(STDIN_FILENO))
		return;

	apk_flags |= APK_PROGRESS;
	if (!(apk_flags & APK_SIMULATE) &&
	    access("/etc/apk/interactive", F_OK) == 0)
		apk_flags |= APK_INTERACTIVE;
}

int main(int argc, char **argv)
{
	struct apk_applet *applet;
	char short_options[256], *sopt;
	struct option *opt, *all_options;
	int r, optindex, num_options;
	void *ctx = NULL;
	struct apk_repository_list *repo = NULL;
	struct apk_database db;
	struct apk_db_options dbopts;
	struct apk_string_array *args;
#ifdef TEST_MODE
	const char *test_installed_db = NULL;
	const char *test_world = NULL;
	struct apk_string_array *test_repos;
	int i;

	apk_string_array_init(&test_repos);
#endif

	apk_argv = malloc(sizeof(char*[argc+2]));
	memcpy(apk_argv, argv, sizeof(char*[argc]));
	apk_argv[argc] = NULL;
	apk_argv[argc+1] = NULL;

	memset(&dbopts, 0, sizeof(dbopts));
	list_init(&dbopts.repository_list);
	apk_atom_init();
	umask(0);
	setup_terminal();

	applet = deduce_applet(argc, argv);
	num_options = ARRAY_SIZE(generic_options) + 1;
	if (applet != NULL)
		num_options += applet->num_options;
	all_options = alloca(sizeof(struct option) * num_options);
	merge_options(&all_options[0], generic_options,
	              ARRAY_SIZE(generic_options));
	if (applet != NULL) {
		merge_options(&all_options[ARRAY_SIZE(generic_options)],
			      applet->options, applet->num_options);
		if (applet->context_size != 0)
			ctx = calloc(1, applet->context_size);
		dbopts.open_flags = applet->open_flags;
		apk_flags |= applet->forced_flags;
	}

	for (opt = all_options, sopt = short_options; opt->name != NULL; opt++) {
		if (opt->flag == NULL &&
		    opt->val <= 0xff && isalnum(opt->val)) {
			*(sopt++) = opt->val;
			if (opt->has_arg != no_argument)
				*(sopt++) = ':';
		}
	}

	init_openssl();
	setup_automatic_flags();

	optindex = 0;
	while ((r = getopt_long(argc, argv, short_options,
				all_options, &optindex)) != -1) {
		switch (r) {
		case 0:
			break;
		case 'h':
			r = usage(applet);
			goto err;
		case 'p':
			dbopts.root = optarg;
			break;
		case 0x107:
			dbopts.keys_dir = optarg;
			break;
		case 0x108:
			dbopts.repositories_file = optarg;
			break;
		case 'X':
			repo = apk_repository_new(optarg);
			if (repo)
				list_add(&repo->list, &dbopts.repository_list);
			break;
		case 'q':
			apk_verbosity--;
			break;
		case 'v':
			apk_verbosity++;
			break;
		case 'V':
			r = version();
			goto err;
		case 'f':
			apk_flags |= APK_FORCE;
			break;
		case 'i':
			apk_flags |= APK_INTERACTIVE;
			break;
		case 'U':
			apk_flags |= APK_UPDATE_CACHE;
			break;
		case 0x101:
			apk_flags |= APK_PROGRESS;
			break;
		case 0x110:
			apk_flags &= ~APK_PROGRESS;
			break;
		case 0x10f:
			apk_progress_fd = atoi(optarg);
			break;
		case 0x102:
			apk_flags |= APK_CLEAN_PROTECTED;
			break;
		case 0x103:
			apk_flags |= APK_ALLOW_UNTRUSTED;
			break;
		case 0x104:
			apk_flags |= APK_SIMULATE;
			break;
		case 0x106:
			apk_flags |= APK_PURGE;
			break;
		case 0x105:
			dbopts.lock_wait = atoi(optarg);
			break;
		case 0x109:
			apk_flags |= APK_NO_NETWORK;
			break;
		case 0x111:
			apk_flags |= APK_OVERLAY_FROM_STDIN;
			break;
		case 0x112:
			dbopts.arch = optarg;
			break;
#ifdef TEST_MODE
		case 0x200:
			*apk_string_array_add(&test_repos) = (char*) optarg;
			break;
		case 0x201:
			test_installed_db = optarg;
			break;
		case 0x202:
			test_world = optarg;
			break;
#endif
		default:
			if (applet == NULL || applet->parse == NULL ||
			    applet->parse(ctx, &dbopts, r,
					  optindex - ARRAY_SIZE(generic_options),
					  optarg) != 0) {
				r = usage(applet);
				goto err;
			}
			break;
		}
	}

	if (applet == NULL) {
		r = usage(NULL);
		goto err;
	}

	argc -= optind;
	argv += optind;
	if (argc >= 1 && strcmp(argv[0], applet->name) == 0) {
		argc--;
		argv++;
	}

#ifdef TEST_MODE
	dbopts.open_flags &= ~(APK_OPENF_WRITE | APK_OPENF_CACHE_WRITE | APK_OPENF_CREATE);
	dbopts.open_flags |= APK_OPENF_READ | APK_OPENF_NO_STATE | APK_OPENF_NO_REPOS;
	apk_flags |= APK_SIMULATE;
	apk_flags &= ~APK_INTERACTIVE;
#endif
	r = apk_db_open(&db, &dbopts);
	if (r != 0) {
		apk_error("Failed to open apk database: %s",
			  apk_error_str(r));
		goto err;
	}

#ifdef TEST_MODE
	if (test_world != NULL) {
		apk_blob_t b = APK_BLOB_STR(test_world);
		apk_blob_pull_deps(&b, &db, &db.world);
	}
	if (test_installed_db != NULL) {
		struct apk_bstream *bs = apk_bstream_from_file(AT_FDCWD, test_installed_db);
		if (bs != NULL) {
			apk_db_index_read(&db, bs, -1);
			bs->close(bs, NULL);
		}
	}
	for (i = 0; i < test_repos->num; i++) {
		struct apk_bstream *bs;
		apk_blob_t spec = APK_BLOB_STR(test_repos->item[i]), name, tag;
		int repo_tag = 0, repo = APK_REPOSITORY_FIRST_CONFIGURED + i;

		if (apk_blob_split(spec, APK_BLOB_STR(":"), &tag, &name)) {
			repo_tag = apk_db_get_tag_id(&db, tag);
		} else {
			name = spec;
		}

		bs = apk_bstream_from_file(AT_FDCWD, name.ptr);
		if (bs != NULL) {
			apk_db_index_read(&db, bs, repo);
			bs->close(bs, NULL);
			if (!(apk_flags & APK_NO_NETWORK))
				db.available_repos |= BIT(repo);
			db.repo_tags[repo_tag].allowed_repos |= BIT(repo);
		}
	}
#endif

	apk_string_array_init(&args);
	apk_string_array_resize(&args, argc);
	memcpy(args->item, argv, argc * sizeof(*argv));

	r = applet->main(ctx, &db, args);
	apk_db_close(&db);

	if (r == -EINVAL)
		r = usage(applet);
err:
	if (ctx)
		free(ctx);
	return r;
}