Hello!
SQLite API has functions for query formatting.
For example:
char *
sqlite3_get_passwd_sqlite(char * file, char* user, char* passwd_type)
{
char *passwd;
char *rec;
sqlite3 *db;
char *sql = NULL;
sqlite3_stmt *stmt;
const char *tail;
int rc;
const char zSql_cleartext[] = "select 'cleartext ' || password as password
from users where nickname=? \
and delete_date IS NULL and date_expire>strftime('%s',datetime('now')) and not
password IS NULL";
const char zSql_des[] = "select 'des ' || password_des as password from
users where nickname=? \
and delete_date IS NULL and date_expire>strftime('%s',datetime('now')) and not
password_des IS NULL";
const char zSql_md5[] = "select 'md5 ' || password_md5 as password from
users where nickname=? \
and delete_date IS NULL and date_expire>strftime('%s',datetime('now')) and not
password_md5 IS NULL";
/* an alternate filename */
if (!(access(file, R_OK) == 0)) {
report(LOG_ERR, "Cannot access to sqlite database file %s for user %s
-- %s",
file, user, strerror(errno));
return(0);
}
/* open SQLite database */
if (sqlite3_open(file, &db) != SQLITE_OK)
report(LOG_ERR, "sqlite3_open(): failed open % database", file);
sqlite3_busy_timeout(db, DB_AUTH_DEFAULT_TIMEOUT);
if (!strcmp(passwd_type, "cleartext")) {
sql = (char*)zSql_cleartext;
} else if (!strcmp(passwd_type, "des")) {
sql = (char*)zSql_des;
} else if (!strcmp(passwd_type, "md5")) {
sql = (char*)zSql_md5;
} else {
report(LOG_ERR, "Unknown password type %s for user %s",
passwd_type, user);
}
if (sqlite3_prepare(db, sql, -1, &stmt, 0) != SQLITE_OK) {
/*Fatal DB Error.*/
report(LOG_ERR, "slite3 prepare error: %s", sql);
sqlite3_close(db);
return(NULL);
}
sqlite3_bind_text(stmt, 1, user, -1, SQLITE_STATIC);
rc = sqlite3_step(stmt);
if(rc == SQLITE_ROW) {
// return row
passwd = tac_strdup((char*)sqlite3_column_text(stmt,0));
// if (debug)
// report(LOG_NOTICE, "slite3 return user nickname=%s,
password=%s",user,passwd);
sqlite3_finalize(stmt);
/* close database */
sqlite3_close(db);
return(passwd);
}
sqlite3_finalize(stmt);
/* close database */
sqlite3_close(db);
return(NULL);
}
Best regards, Alexey.
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