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/* 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 <mysql.h>
#include <stdio.h>
#include <string.h>
#include "config.h"
#define alpm_die(...) die(__VA_ARGS__, alpm_strerrorlast());
#define mysql_die(...) die(__VA_ARGS__, mysql_error(c));
void die(const char *, ...);
void blacklist_add(const char *);
void blacklist_sync(alpm_list_t *);
alpm_list_t *get_package_list(alpm_list_t *);
alpm_list_t *create_db_list(void);
void read_config(const char *);
void init(void);
void cleanup(void);
static char *mysql_host = NULL;
static char *mysql_socket = NULL;
static char *mysql_user = NULL;
static char *mysql_passwd = NULL;
static char *mysql_db = NULL;
MYSQL *c;
void
die(const char *format, ...)
{
va_list arg;
va_start(arg, format);
fprintf(stderr, "blackup: ");
vfprintf(stderr, format, arg);
va_end(arg);
cleanup();
exit(1);
}
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));
*(esc + strcspn(esc, "<=>")) = 0;
snprintf(query, 1024, "INSERT IGNORE INTO PackageBlacklist (Name) "
"VALUES ('%s');", esc);
free(esc);
if (mysql_query(c, query))
mysql_die("failed to query MySQL database (\"%s\"): %s\n", query);
}
void
blacklist_sync(alpm_list_t *pkgs)
{
alpm_list_t *r, *p;
if (mysql_query(c, "LOCK TABLES PackageBlacklist WRITE;"))
mysql_die("failed to lock MySQL table: %s\n");
if (mysql_query(c, "DELETE FROM PackageBlacklist;"))
mysql_die("failed to clear MySQL table: %s\n");
for (r = pkgs; r; r = alpm_list_next(r)) {
pmpkg_t *pkg = alpm_list_getdata(r);
blacklist_add(alpm_pkg_get_name(pkg));
for (p = alpm_pkg_get_provides(pkg); p; p = alpm_list_next(p)) {
blacklist_add(alpm_list_getdata(p));
}
for (p = alpm_pkg_get_replaces(pkg); p; p = alpm_list_next(p)) {
blacklist_add(alpm_list_getdata(p));
}
}
if (mysql_query(c, "UNLOCK TABLES;"))
mysql_die("failed to unlock MySQL tables: %s\n");
}
alpm_list_t *
get_package_list(alpm_list_t *dblist)
{
alpm_list_t *r, *pkgs = NULL;
for (r = dblist; r; r = alpm_list_next(r)) {
pmdb_t *db = alpm_list_getdata(r);
if (alpm_trans_init(0, NULL, NULL, NULL))
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())
alpm_die("failed to release ALPM transaction: %s\n");
pkgs = alpm_list_join(pkgs, alpm_list_copy(alpm_db_get_pkgcache(db)));
}
return pkgs;
}
alpm_list_t *
create_db_list(void)
{
alpm_list_t *r, *dblist = NULL;
int i;
for (i = 0; i < sizeof(alpm_repos) / sizeof(char *); i++) {
if (!alpm_db_register_sync(alpm_repos[i]))
alpm_die("failed to register sync db \"%s\": %s\n", alpm_repos[i]);
}
if (!(dblist = alpm_option_get_syncdbs()))
alpm_die("failed to get sync DBs: %s\n");
for (r = dblist; r; r = alpm_list_next(r)) {
pmdb_t *db = alpm_list_getdata(r);
char server[1024];
snprintf(server, 1024, ALPM_MIRROR, alpm_db_get_name(db));
if (alpm_db_setserver(db, server))
alpm_die("failed to set server \"%s\": %s\n", server);
}
return dblist;
}
void
read_config(const char *fn)
{
FILE *fp;
char line[128];
char **t, **u, *p, *q;
if (!(fp = fopen(fn, "r")))
die("failed to open AUR config file (\"%s\")\n", fn);
while (fgets(line, sizeof(line), fp)) {
u = NULL;
if (strstr(line, CONFIG_KEY_HOST)) {
t = &mysql_host;
u = &mysql_socket;
}
else if (strstr(line, CONFIG_KEY_USER)) t = &mysql_user;
else if (strstr(line, CONFIG_KEY_PASSWD)) t = &mysql_passwd;
else if (strstr(line, CONFIG_KEY_DB)) t = &mysql_db;
else t = NULL;
if (t) {
strtok(line, "\"");
strtok(NULL, "\"");
strtok(NULL, "\"");
p = strtok(NULL, "\"");
if (u) {
p = strtok(p, ":");
q = strtok(NULL, ":");
}
else q = NULL;
if (p && !*t) {
*t = malloc(strlen(p) + 1);
strncpy(*t, p, strlen(p) + 1);
}
if (q && !*u) {
*u = malloc(strlen(q) + 1);
strncpy(*u, q, strlen(q) + 1);
}
}
}
fclose(fp);
if (!mysql_host)
die("MySQL host setting not found in AUR config file\n");
if (!mysql_user)
die("MySQL user setting not found in AUR config file\n");
if (!mysql_passwd)
die("MySQL password setting not found in AUR config file\n");
if (!mysql_db)
die("MySQL database setting not found in AUR config file\n");
}
void
init(void)
{
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 (alpm_initialize())
alpm_die("failed to initialize ALPM: %s\n");
if (alpm_option_set_root("/"))
alpm_die("failed to set ALPM root: %s\n");
if (alpm_option_set_dbpath(ALPM_DBPATH))
alpm_die("failed to set ALPM database path: %s\n");
}
void
cleanup(void)
{
if (mysql_host) free(mysql_host);
if (mysql_socket) free(mysql_socket);
if (mysql_user) free(mysql_user);
if (mysql_passwd) free(mysql_passwd);
if (mysql_db) free(mysql_db);
alpm_release();
mysql_close(c);
mysql_library_end();
}
int main(int argc, char *argv[])
{
alpm_list_t *pkgs;
read_config(AUR_CONFIG);
init();
pkgs = get_package_list(create_db_list());
blacklist_sync(pkgs);
alpm_list_free(pkgs);
cleanup();
return 0;
}
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