summaryrefslogtreecommitdiff
path: root/scripts/aurblup/aurblup.c
blob: f07266903c8fbdb43e204a089b3fbfbe8eb25acc (plain)
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
/* aurblup - AUR blacklist updater
 *
 * Small utility to update the AUR package blacklist. Can be used in a cronjob.
 * Check the "README" file for details.
 */

#include <alpm.h>
#include <getopt.h>
#include <mysql.h>
#include <stdio.h>
#include <string.h>

#include "config.h"

#define alpm_die(...) die(__VA_ARGS__, alpm_strerror(alpm_errno(handle)));
#define mysql_die(...) die(__VA_ARGS__, mysql_error(c));

static void die(const char *, ...);
static alpm_list_t *pkglist_append(alpm_list_t *, const char *);
static alpm_list_t *blacklist_get_pkglist();
static void blacklist_add(const char *);
static void blacklist_remove(const char *);
static void blacklist_sync(alpm_list_t *, alpm_list_t *);
static alpm_list_t *dblist_get_pkglist(alpm_list_t *);
static alpm_list_t *dblist_create(void);
static int parse_options(int, char **);
static void init(void);
static void cleanup(void);

static char *mysql_host = "localhost";
static char *mysql_socket = NULL;
static char *mysql_user = "aur";
static char *mysql_passwd = "aur";
static char *mysql_db = "AUR";

static MYSQL *c;

static alpm_handle_t *handle;

static void
die(const char *format, ...)
{
  va_list arg;

  va_start(arg, format);
  fprintf(stderr, "aurblup: ");
  vfprintf(stderr, format, arg);
  va_end(arg);

  cleanup();
  exit(1);
}

static alpm_list_t *
pkglist_append(alpm_list_t *pkglist, const char *pkgname)
{
  int len = strcspn(pkgname, "<=>");
  if (!len)
    len = strlen(pkgname);

  char *s = malloc(len + 1);

  strncpy(s, pkgname, len);
  s[len] = '\0';

  if (alpm_list_find_str(pkglist, s))
    free(s);
  else
    pkglist = alpm_list_add(pkglist, s);

  return pkglist;
}

static alpm_list_t *
blacklist_get_pkglist()
{
  MYSQL_RES *res;
  MYSQL_ROW row;
  alpm_list_t *pkglist = NULL;

  if (mysql_query(c, "SELECT Name FROM PackageBlacklist"))
    mysql_die("failed to read blacklist from MySQL database: %s\n");

  if (!(res = mysql_store_result(c)))
    mysql_die("failed to store MySQL result: %s\n");

  while ((row = mysql_fetch_row(res)))
    pkglist = pkglist_append(pkglist, row[0]);

  mysql_free_result(res);

  return pkglist;
}

static void
blacklist_add(const char *name)
{
  char *esc = malloc(strlen(name) * 2 + 1);
  char query[1024];

  mysql_real_escape_string(c, esc, name, strlen(name));
  snprintf(query, 1024, "INSERT INTO PackageBlacklist (Name) "
                        "VALUES ('%s')", esc);
  free(esc);

  if (mysql_query(c, query))
    mysql_die("failed to query MySQL database (\"%s\"): %s\n", query);
}

static void
blacklist_remove(const char *name)
{
  char *esc = malloc(strlen(name) * 2 + 1);
  char query[1024];

  mysql_real_escape_string(c, esc, name, strlen(name));
  snprintf(query, 1024, "DELETE FROM PackageBlacklist WHERE Name = '%s'", esc);
  free(esc);

  if (mysql_query(c, query))
    mysql_die("failed to query MySQL database (\"%s\"): %s\n", query);
}

static void
blacklist_sync(alpm_list_t *pkgs_cur, alpm_list_t *pkgs_new)
{
  alpm_list_t *pkgs_add, *pkgs_rem, *p;

  pkgs_add = alpm_list_diff(pkgs_new, pkgs_cur, (alpm_list_fn_cmp)strcmp);
  pkgs_rem = alpm_list_diff(pkgs_cur, pkgs_new, (alpm_list_fn_cmp)strcmp);

  if (mysql_query(c, "START TRANSACTION"))
    mysql_die("failed to start MySQL transaction: %s\n");

  for (p = pkgs_add; p; p = alpm_list_next(p))
    blacklist_add(p->data);

  for (p = pkgs_rem; p; p = alpm_list_next(p))
    blacklist_remove(p->data);

  if (mysql_query(c, "COMMIT"))
    mysql_die("failed to commit MySQL transaction: %s\n");

  alpm_list_free(pkgs_add);
  alpm_list_free(pkgs_rem);
}

static alpm_list_t *
dblist_get_pkglist(alpm_list_t *dblist)
{
  alpm_list_t *d, *p, *q;
  alpm_list_t *pkglist = NULL;

  for (d = dblist; d; d = alpm_list_next(d)) {
    alpm_db_t *db = d->data;

    if (alpm_trans_init(handle, 0))
      alpm_die("failed to initialize ALPM transaction: %s\n");
    if (alpm_db_update(0, db) < 0)
      alpm_die("failed to update ALPM database: %s\n");
    if (alpm_trans_release(handle))
      alpm_die("failed to release ALPM transaction: %s\n");

    for (p = alpm_db_get_pkgcache(db); p; p = alpm_list_next(p)) {
      alpm_pkg_t *pkg = p->data;

      pkglist = pkglist_append(pkglist, alpm_pkg_get_name(pkg));

      for (q = alpm_pkg_get_provides(pkg); q; q = alpm_list_next(q)) {
        alpm_depend_t *provide = q->data;
        pkglist = pkglist_append(pkglist, provide->name);
      }

      for (q = alpm_pkg_get_replaces(pkg); q; q = alpm_list_next(q)) {
        alpm_depend_t *replace = q->data;
        pkglist = pkglist_append(pkglist, replace->name);
      }
    }
  }

  return pkglist;
}

static alpm_list_t *
dblist_create(void)
{
  alpm_list_t *d;
  alpm_list_t *dblist = NULL;
  int i;

  for (i = 0; i < sizeof(alpm_repos) / sizeof(char *); i++) {
    if (!alpm_register_syncdb(handle, alpm_repos[i], 0))
      alpm_die("failed to register sync db \"%s\": %s\n", alpm_repos[i]);
  }

  if (!(dblist = alpm_get_syncdbs(handle)))
    alpm_die("failed to get sync DBs: %s\n");

  for (d = dblist; d; d = alpm_list_next(d)) {
    alpm_db_t *db = d->data;

    char server[1024];
    snprintf(server, 1024, ALPM_MIRROR, alpm_db_get_name(db));

    if (alpm_db_add_server(db, server))
      alpm_die("failed to set server \"%s\": %s\n", server);
  }

  return dblist;
}

static int parse_options(int argc, char **argv)
{
  int opt;

  static const struct option opts[] = {
    { "mysql-host",   required_argument, 0, 'h' },
    { "mysql-socket", required_argument, 0, 'S' },
    { "mysql-user",   required_argument, 0, 'u' },
    { "mysql-passwd", required_argument, 0, 'p' },
    { "mysql-db",     required_argument, 0, 'D' },
    { 0, 0, 0, 0 }
  };

  while((opt = getopt_long(argc, argv, "h:S:u:p:D:", opts, NULL)) != -1) {
    switch(opt) {
      case 'h':
        mysql_host = optarg;
        break;;
      case 'S':
        mysql_socket = optarg;
        break;;
      case 'u':
        mysql_user = optarg;
        break;;
      case 'p':
        mysql_passwd = optarg;
        break;;
      case 'D':
        mysql_db = optarg;
        break;;
      default:
        return 0;
    }
  }

  return 1;
}

static void
init(void)
{
  enum _alpm_errno_t alpm_err;
  if (mysql_library_init(0, NULL, NULL))
    mysql_die("could not initialize MySQL library: %s\n");
  if (!(c = mysql_init(NULL)))
    mysql_die("failed to setup MySQL client: %s\n");
  if (!mysql_real_connect(c, mysql_host, mysql_user, mysql_passwd,
                          mysql_db, 0, mysql_socket, 0))
    mysql_die("failed to initiate MySQL connection to %s: %s\n", mysql_host);

  if ((handle = alpm_initialize("/", ALPM_DBPATH, &alpm_err)) == NULL)
    die("failed to initialize ALPM: %s\n", alpm_strerror(alpm_err));
}

static void
cleanup(void)
{
  alpm_release(handle);
  mysql_close(c);
  mysql_library_end();
}

int main(int argc, char *argv[])
{
  alpm_list_t *pkgs_cur, *pkgs_new;

  if (!parse_options(argc, argv))
    return 1;

  init();

  pkgs_cur = blacklist_get_pkglist();
  pkgs_new = dblist_get_pkglist(dblist_create());
  blacklist_sync(pkgs_cur, pkgs_new);
  FREELIST(pkgs_new);
  FREELIST(pkgs_cur);

  cleanup();

  return 0;
}