aboutsummaryrefslogtreecommitdiffstats
path: root/patches/0001-implement-CacheServer.patch
blob: 061d1239a80499d0d419de5dff105de74cc561d8 (about) (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
From a5239c9b76a515598afdb3e698dc82263341b1ad Mon Sep 17 00:00:00 2001
From: Christian Hesse <mail@eworm.de>
Date: Fri, 21 Jan 2022 16:11:02 +0100
Subject: [PATCH] implement CacheServer

This implements a new configuration option 'CacheServer'. Adding a cache
server makes it ignore the server error limit.

We have a struct that stores the server errors. Extend (and rename) this
struct to store if this is a cache server. The errors are not increased
for cache servers, thus they are never ignored.

Signed-off-by: Christian Hesse <mail@eworm.de>
---
 doc/pacman.conf.5.asciidoc |  5 ++++
 lib/libalpm/alpm.h         |  7 +++--
 lib/libalpm/db.c           | 22 ++++++++++++----
 lib/libalpm/db.h           |  1 +
 lib/libalpm/dload.c        | 52 +++++++++++++++++++++++++++++++-------
 lib/libalpm/dload.h        |  2 ++
 src/pacman/conf.c          | 16 +++++++++---
 src/pacman/conf.h          |  1 +
 src/pacman/pacman-conf.c   |  1 +
 9 files changed, 88 insertions(+), 19 deletions(-)

diff --git a/doc/pacman.conf.5.asciidoc b/doc/pacman.conf.5.asciidoc
index 41f3ea03..a25e35eb 100644
--- a/doc/pacman.conf.5.asciidoc
+++ b/doc/pacman.conf.5.asciidoc
@@ -243,6 +243,11 @@ number.
 *Server =* url::
 	A full URL to a location where the database, packages, and signatures (if
 	available) for this repository can be found.
+
+*CacheServer =* url::
+	A full URL to a location where packages, and signatures (if available)
+	for this repository can be found. There's no server error limit, log
+	messages are not shown for server side errors (http code >= 400).
 +
 During parsing, pacman will define the `$repo` variable to the name of the
 current section. This is often utilized in files specified using the 'Include'
diff --git a/lib/libalpm/alpm.h b/lib/libalpm/alpm.h
index cdf71fdc..14889b9c 100644
--- a/lib/libalpm/alpm.h
+++ b/lib/libalpm/alpm.h
@@ -1322,16 +1322,19 @@ alpm_list_t *alpm_db_get_servers(const alpm_db_t *db);
 /** Sets the list of servers for the database to use.
  * @param db the database to set the servers. The list will be duped and
  * the original will still need to be freed by the caller.
+ * @param cacheservers a char* list of cacheservers.
  * @param servers a char* list of servers.
  */
-int alpm_db_set_servers(alpm_db_t *db, alpm_list_t *servers);
+int alpm_db_set_servers(alpm_db_t *db, alpm_list_t *cacheservers,
+		alpm_list_t *servers);
 
 /** Add a download server to a database.
  * @param db database pointer
  * @param url url of the server
+ * @param cache 0 for regular server, 1 for cacheserver
  * @return 0 on success, -1 on error (pm_errno is set accordingly)
  */
-int alpm_db_add_server(alpm_db_t *db, const char *url);
+int alpm_db_add_server(alpm_db_t *db, const char *url, const int cache);
 
 /** Remove a download server from a database.
  * @param db database pointer
diff --git a/lib/libalpm/db.c b/lib/libalpm/db.c
index ece8eae6..e9bca9c8 100644
--- a/lib/libalpm/db.c
+++ b/lib/libalpm/db.c
@@ -36,6 +36,7 @@
 #include "alpm.h"
 #include "package.h"
 #include "group.h"
+#include "dload.h"
 
 alpm_db_t SYMEXPORT *alpm_register_syncdb(alpm_handle_t *handle,
 		const char *treename, int siglevel)
@@ -137,14 +138,22 @@ alpm_list_t SYMEXPORT *alpm_db_get_servers(const alpm_db_t *db)
 	return db->servers;
 }
 
-int SYMEXPORT alpm_db_set_servers(alpm_db_t *db, alpm_list_t *servers)
+int SYMEXPORT alpm_db_set_servers(alpm_db_t *db, alpm_list_t *cacheservers,
+		alpm_list_t *servers)
 {
 	alpm_list_t *i;
 	ASSERT(db != NULL, return -1);
+	FREELIST(db->cacheservers);
 	FREELIST(db->servers);
+	for(i = cacheservers; i; i = i->next) {
+		char *url = i->data;
+		if(alpm_db_add_server(db, url, 1) != 0) {
+			return -1;
+		}
+	}
 	for(i = servers; i; i = i->next) {
 		char *url = i->data;
-		if(alpm_db_add_server(db, url) != 0) {
+		if(alpm_db_add_server(db, url, 0) != 0) {
 			return -1;
 		}
 	}
@@ -164,7 +173,7 @@ static char *sanitize_url(const char *url)
 	return newurl;
 }
 
-int SYMEXPORT alpm_db_add_server(alpm_db_t *db, const char *url)
+int SYMEXPORT alpm_db_add_server(alpm_db_t *db, const char *url, const int cache)
 {
 	char *newurl;
 
@@ -178,8 +187,11 @@ int SYMEXPORT alpm_db_add_server(alpm_db_t *db, const char *url)
 		return -1;
 	}
 	db->servers = alpm_list_add(db->servers, newurl);
-	_alpm_log(db->handle, ALPM_LOG_DEBUG, "adding new server URL to database '%s': %s\n",
-			db->treename, newurl);
+	if(cache) {
+		server_make_cache(db->handle, newurl);
+	}
+	_alpm_log(db->handle, ALPM_LOG_DEBUG, "adding new %sserver URL to database '%s': %s\n",
+			cache ? "cache " : "", db->treename, newurl);
 
 	return 0;
 }
diff --git a/lib/libalpm/db.h b/lib/libalpm/db.h
index c9400365..50812e28 100644
--- a/lib/libalpm/db.h
+++ b/lib/libalpm/db.h
@@ -69,6 +69,7 @@ struct _alpm_db_t {
 	char *_path;
 	alpm_pkghash_t *pkgcache;
 	alpm_list_t *grpcache;
+	alpm_list_t *cacheservers;
 	alpm_list_t *servers;
 	const struct db_operations *ops;
 
diff --git a/lib/libalpm/dload.c b/lib/libalpm/dload.c
index 7c27c3ea..3b3e5dc4 100644
--- a/lib/libalpm/dload.c
+++ b/lib/libalpm/dload.c
@@ -62,15 +62,16 @@ static int curl_gethost(const char *url, char *buffer, size_t buf_len);
  * server blacklisting */
 const unsigned int server_error_limit = 3;
 
-struct server_error_count {
+struct server_opts {
 	char server[HOSTNAME_SIZE];
+	unsigned int cache;
 	unsigned int errors;
 };
 
-static struct server_error_count *find_server_errors(alpm_handle_t *handle, const char *server)
+static struct server_opts *find_server_errors(alpm_handle_t *handle, const char *server)
 {
 	alpm_list_t *i;
-	struct server_error_count *h;
+	struct server_opts *h;
 	char hostname[HOSTNAME_SIZE];
 	/* key off the hostname because a host may serve multiple repos under
 	 * different url's and errors are likely to be host-wide */
@@ -83,7 +84,7 @@ static struct server_error_count *find_server_errors(alpm_handle_t *handle, cons
 			return h;
 		}
 	}
-	if((h = calloc(sizeof(struct server_error_count), 1))
+	if((h = calloc(sizeof(struct server_opts), 1))
 			&& alpm_list_append(&handle->server_errors, h)) {
 		strcpy(h->server, hostname);
 		h->errors = 0;
@@ -94,9 +95,38 @@ static struct server_error_count *find_server_errors(alpm_handle_t *handle, cons
 	}
 }
 
+static int is_cache_server(alpm_handle_t *handle, const char *server)
+{
+	struct server_opts *h;
+	if((h = find_server_errors(handle, server))) {
+		return h->cache;
+	}
+	return 0;
+}
+
+static int should_skip_cacheserver(alpm_handle_t *handle, const char *server, const char *filepath)
+{
+	if(!is_cache_server(handle, server)) {
+		return 0;
+	}
+	if(filepath) {
+		int len = strlen(filepath);
+		return (len > 3 && strncmp(filepath + len - 3, ".db", 3) == 0) ? 1 : 0;
+	}
+	return 0;
+}
+
+void server_make_cache(alpm_handle_t *handle, const char *server)
+{
+	struct server_opts *h;
+	if((h = find_server_errors(handle, server))) {
+		h->cache = 1;
+	}
+}
+
 static int should_skip_server(alpm_handle_t *handle, const char *server)
 {
-	struct server_error_count *h;
+	struct server_opts *h;
 	if(server_error_limit && (h = find_server_errors(handle, server)) ) {
 		return h->errors >= server_error_limit;
 	}
@@ -105,9 +135,10 @@ static int should_skip_server(alpm_handle_t *handle, const char *server)
 
 static void server_increment_error(alpm_handle_t *handle, const char *server, int count)
 {
-	struct server_error_count *h;
+	struct server_opts *h;
 	if(server_error_limit
 			&& (h = find_server_errors(handle, server))
+			&& !is_cache_server(handle, server)
 			&& !should_skip_server(handle, server) ) {
 		h->errors += count;
 
@@ -414,7 +445,8 @@ static int curl_retry_next_server(CURLM *curlm, CURL *curl, struct dload_payload
 	struct stat st;
 	alpm_handle_t *handle = payload->handle;
 
-	while(payload->servers && should_skip_server(handle, payload->servers->data)) {
+	while(payload->servers && (should_skip_server(handle, payload->servers->data)
+				|| should_skip_cacheserver(handle, payload->servers->data, payload->filepath))) {
 		payload->servers = payload->servers->next;
 	}
 	if(!payload->servers) {
@@ -511,7 +543,7 @@ static int curl_check_finished_download(CURLM *curlm, CURLMsg *msg,
 					/* non-translated message is same as libcurl */
 					snprintf(payload->error_buffer, sizeof(payload->error_buffer),
 							"The requested URL returned error: %ld", payload->respcode);
-					_alpm_log(handle, ALPM_LOG_ERROR,
+					_alpm_log(handle, is_cache_server(handle, payload->fileurl) ? ALPM_LOG_DEBUG : ALPM_LOG_ERROR,
 							_("failed retrieving file '%s' from %s : %s\n"),
 							payload->remote_name, hostname, payload->error_buffer);
 					server_soft_error(handle, payload->fileurl);
@@ -769,7 +801,9 @@ static int curl_add_payload(alpm_handle_t *handle, CURLM *curlm,
 		ASSERT(!payload->filepath, GOTO_ERR(handle, ALPM_ERR_WRONG_ARGS, cleanup));
 	} else {
 		const char *server;
-		while(payload->servers && should_skip_server(handle, payload->servers->data)) {
+
+		while(payload->servers && (should_skip_server(handle, payload->servers->data)
+					|| should_skip_cacheserver(handle, payload->servers->data, payload->filepath))) {
 			payload->servers = payload->servers->next;
 		}
 
diff --git a/lib/libalpm/dload.h b/lib/libalpm/dload.h
index 9438e04a..d117244d 100644
--- a/lib/libalpm/dload.h
+++ b/lib/libalpm/dload.h
@@ -58,6 +58,8 @@ struct dload_payload {
 #endif
 };
 
+void server_make_cache(alpm_handle_t *handle, const char *server);
+
 void _alpm_dload_payload_reset(struct dload_payload *payload);
 
 int _alpm_download(alpm_handle_t *handle,
diff --git a/src/pacman/conf.c b/src/pacman/conf.c
index f9edf75b..04bb478b 100644
--- a/src/pacman/conf.c
+++ b/src/pacman/conf.c
@@ -172,6 +172,7 @@ void config_repo_free(config_repo_t *repo)
 		return;
 	}
 	free(repo->name);
+	FREELIST(repo->cacheservers);
 	FREELIST(repo->servers);
 	free(repo);
 }
@@ -781,9 +782,9 @@ static char *replace_server_vars(config_t *c, config_repo_t *r, const char *s)
 	}
 }
 
-static int _add_mirror(alpm_db_t *db, char *value)
+static int _add_mirror(alpm_db_t *db, char *value, const int cache)
 {
-	if(alpm_db_add_server(db, value) != 0) {
+	if(alpm_db_add_server(db, value, cache) != 0) {
 		/* pm_errno is set by alpm_db_setserver */
 		pm_printf(ALPM_LOG_ERROR, _("could not add server URL to database '%s': %s (%s)\n"),
 				alpm_db_get_name(db), value, alpm_strerror(alpm_errno(config->handle)));
@@ -809,8 +810,14 @@ static int register_repo(config_repo_t *repo)
 			repo->usage, repo->name);
 	alpm_db_set_usage(db, repo->usage);
 
+	for(i = repo->cacheservers; i; i = alpm_list_next(i)) {
+		if(_add_mirror(db, i->data, 1) != 0) {
+			return 1;
+		}
+	}
+
 	for(i = repo->servers; i; i = alpm_list_next(i)) {
-		if(_add_mirror(db, i->data) != 0) {
+		if(_add_mirror(db, i->data, 0) != 0) {
 			return 1;
 		}
 	}
@@ -993,6 +1000,9 @@ static int _parse_repo(const char *key, char *value, const char *file,
 	if(strcmp(key, "Server") == 0) {
 		CHECK_VALUE(value);
 		repo->servers = alpm_list_add(repo->servers, strdup(value));
+	} else if(strcmp(key, "CacheServer") == 0) {
+		CHECK_VALUE(value);
+		repo->cacheservers = alpm_list_add(repo->cacheservers, strdup(value));
 	} else if(strcmp(key, "SigLevel") == 0) {
 		CHECK_VALUE(value);
 		alpm_list_t *values = NULL;
diff --git a/src/pacman/conf.h b/src/pacman/conf.h
index f7916ca9..f242f522 100644
--- a/src/pacman/conf.h
+++ b/src/pacman/conf.h
@@ -37,6 +37,7 @@ typedef struct __colstr_t {
 
 typedef struct __config_repo_t {
 	char *name;
+	alpm_list_t *cacheservers;
 	alpm_list_t *servers;
 	int usage;
 	int siglevel;
diff --git a/src/pacman/pacman-conf.c b/src/pacman/pacman-conf.c
index a9d1f52b..db648d4c 100644
--- a/src/pacman/pacman-conf.c
+++ b/src/pacman/pacman-conf.c
@@ -236,6 +236,7 @@ static void dump_repo(config_repo_t *repo)
 {
 	show_usage("Usage", repo->usage);
 	show_siglevel("SigLevel", repo->siglevel, 0);
+	show_list_str("CacheServer", repo->cacheservers);
 	show_list_str("Server", repo->servers);
 }