summaryrefslogtreecommitdiff
path: root/src/index.c
blob: 35bd340c4279cd2edaf64ed15ddeadf14ddd66ef (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
/* index.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 <errno.h>
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/stat.h>

#include "apk_applet.h"
#include "apk_database.h"
#include "apk_print.h"

struct counts {
	int unsatisfied;
};

struct index_ctx {
	const char *index;
	const char *output;
	const char *description;
	apk_blob_t *rewrite_arch;
	time_t index_mtime;
	int method;
};

static int option_parse_applet(void *ctx, struct apk_db_options *dbopts, int optch, const char *optarg)
{
	struct index_ctx *ictx = (struct index_ctx *) ctx;

	switch (optch) {
	case 'x':
		ictx->index = optarg;
		break;
	case 'o':
		ictx->output = optarg;
		break;
	case 'd':
		ictx->description = optarg;
		break;
	case 0x10000:
		ictx->rewrite_arch = apk_blob_atomize(APK_BLOB_STR(optarg));
		break;
	default:
		return -ENOTSUP;
	}
	return 0;
}

static const struct apk_option options_applet[] = {
	{ 'o', "output", "Write the generated index to FILE",
	  required_argument, "FILE" },
	{ 'x', "index", "Read INDEX to speed up new index creation by reusing "
	  "the information from an old index",
	  required_argument, "INDEX" },
	{ 'd', "description", "Embed TEXT as description and version "
	  "information of the repository index",
	  required_argument, "TEXT" },
	{ 0x10000, "rewrite-arch", "Use ARCH as architecture for all packages",
	  required_argument, "ARCH" },
};

static const struct apk_option_group optgroup_applet = {
	.name = "Index",
	.options = options_applet,
	.num_options = ARRAY_SIZE(options_applet),
	.parse = option_parse_applet,
};

static int index_read_file(struct apk_database *db, struct index_ctx *ictx)
{
	struct apk_file_info fi;

	if (ictx->index == NULL)
		return 0;
	if (apk_fileinfo_get(AT_FDCWD, ictx->index, APK_CHECKSUM_NONE, &fi) < 0)
		return 0;

	ictx->index_mtime = fi.mtime;
	return apk_db_index_read_file(db, ictx->index, 0);
}

static int warn_if_no_providers(apk_hash_item item, void *ctx)
{
	struct counts *counts = (struct counts *) ctx;
	struct apk_name *name = (struct apk_name *) item;

	if (!name->is_dependency) return 0;
	if (name->providers->num) return 0;

	if (++counts->unsatisfied < 10) {
		apk_warning("No provider for dependency '%s'",
			    name->name);
	} else if (counts->unsatisfied == 10) {
		apk_warning("Too many unsatisfiable dependencies, "
			    "not reporting the rest.");
	}

	return 0;
}

static int index_main(void *ctx, struct apk_database *db, struct apk_string_array *args)
{
	struct counts counts = {0};
	struct apk_ostream *os;
	struct apk_file_info fi;
	int total, r, found, newpkgs = 0, errors = 0;
	struct index_ctx *ictx = (struct index_ctx *) ctx;
	struct apk_package *pkg;
	char **parg;

	if (isatty(STDOUT_FILENO) && ictx->output == NULL &&
	    !(apk_force & APK_FORCE_BINARY_STDOUT)) {
		apk_error("Will not write binary index to console. "
			  "Use --force-binary-stdout to override.");
		return -1;
	}

	if (ictx->method == 0)
		ictx->method = APK_SIGN_GENERATE;

	if ((r = index_read_file(db, ictx)) < 0) {
		apk_error("%s: %s", ictx->index, apk_error_str(r));
		return r;
	}

	foreach_array_item(parg, args) {
		if (apk_fileinfo_get(AT_FDCWD, *parg, APK_CHECKSUM_NONE, &fi) < 0) {
			apk_warning("File '%s' is unaccessible", *parg);
			continue;
		}

		found = FALSE;
		do {
			struct apk_provider *p;
			struct apk_name *name;
			char *fname, *fend;
			apk_blob_t bname, bver;

			/* Check if index is newer than package */
			if (ictx->index == NULL || ictx->index_mtime < fi.mtime)
				break;

			/* Check that it looks like a package name */
			fname = strrchr(*parg, '/');
			if (fname == NULL)
				fname = *parg;
			else
				fname++;
			fend = strstr(fname, ".apk");
			if (fend == NULL)
				break;
			if (apk_pkg_parse_name(APK_BLOB_PTR_PTR(fname, fend-1),
					       &bname, &bver) < 0)
				break;

			/* If we have it in the old index already? */
			name = apk_db_query_name(db, bname);
			if (name == NULL)
				break;

			foreach_array_item(p, name->providers) {
				pkg = p->pkg;
				if (pkg->name != name)
					continue;
				if (apk_blob_compare(bver, *pkg->version) != 0)
					continue;
				if (pkg->size != fi.size)
					continue;
				pkg->filename = strdup(*parg);
				if (ictx->rewrite_arch != NULL)
					pkg->arch = ictx->rewrite_arch;
				found = TRUE;
				break;
			}
		} while (0);

		if (!found) {
			struct apk_sign_ctx sctx;
			apk_sign_ctx_init(&sctx, ictx->method, NULL, db->keys_fd);
			r = apk_pkg_read(db, *parg, &sctx, &pkg);
			if (r < 0) {
				apk_error("%s: %s", *parg, apk_error_str(r));
				errors++;
			} else {
				newpkgs++;
				if (ictx->rewrite_arch != NULL)
					pkg->arch = ictx->rewrite_arch;
			}
			apk_sign_ctx_free(&sctx);
		}
	}
	if (errors)
		return -1;

	if (ictx->output != NULL)
		os = apk_ostream_to_file(AT_FDCWD, ictx->output, NULL, 0644);
	else
		os = apk_ostream_to_fd(STDOUT_FILENO);
	if (IS_ERR_OR_NULL(os)) return -1;

	if (ictx->method == APK_SIGN_GENERATE) {
		struct apk_ostream *counter;

		memset(&fi, 0, sizeof(fi));
		fi.mode = 0644 | S_IFREG;
		fi.name = "APKINDEX";
		counter = apk_ostream_counter(&fi.size);
		r = apk_db_index_write(db, counter);
		apk_ostream_close(counter);

		if (r >= 0) {
			os = apk_ostream_gzip(os);
			if (ictx->description != NULL) {
				struct apk_file_info fi_desc;
				memset(&fi_desc, 0, sizeof(fi));
				fi_desc.mode = 0644 | S_IFREG;
				fi_desc.name = "DESCRIPTION";
				fi_desc.size = strlen(ictx->description);
				apk_tar_write_entry(os, &fi_desc, ictx->description);
			}

			apk_tar_write_entry(os, &fi, NULL);
			r = apk_db_index_write(db, os);
			apk_tar_write_padding(os, &fi);

			apk_tar_write_entry(os, NULL, NULL);
		}
	} else {
		r = apk_db_index_write(db, os);
	}
	apk_ostream_close(os);

	if (r < 0) {
		apk_error("Index generation failed: %s", apk_error_str(r));
		return r;
	}

	total = r;
	apk_hash_foreach(&db->available.names, warn_if_no_providers, &counts);

	if (counts.unsatisfied != 0)
		apk_warning("Total of %d unsatisfiable package "
			    "names. Your repository may be broken.",
			    counts.unsatisfied);
	apk_message("Index has %d packages (of which %d are new)",
		    total, newpkgs);

	return 0;
}

static struct apk_applet apk_index = {
	.name = "index",
	.help = "Create repository index file from FILEs",
	.arguments = "FILE...",
	.open_flags = APK_OPENF_READ | APK_OPENF_NO_STATE | APK_OPENF_NO_REPOS,
	.context_size = sizeof(struct index_ctx),
	.optgroups = { &optgroup_global, &optgroup_applet },
	.main = index_main,
};

APK_DEFINE_APPLET(apk_index);