schema.c

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#include "config.h"
#include <sqlite3.h>
#include <stddef.h>
#include "private.h"
#include "mutt/lib.h"
#include "core/lib.h"
#include "module_data.h"

int mutt_autocrypt_schema_init(void)
{
  char *errmsg = NULL;
  struct AutocryptModuleData *mod_data = neomutt_get_module_data(NeoMutt, MODULE_ID_AUTOCRYPT);
  sqlite3 *db = mod_data->autocrypt_db;
 
  const char *schema = "BEGIN TRANSACTION; "
 
                       "CREATE TABLE account ("
                       "email_addr text primary key not null, "
                       "keyid text, "
                       "keydata text, "
                       "prefer_encrypt int, "
                       "enabled int);"
 
                       "CREATE TABLE peer ("
                       "email_addr text primary key not null, "
                       "last_seen int, "
                       "autocrypt_timestamp int, "
                       "keyid text, "
                       "keydata text, "
                       "prefer_encrypt int, "
                       "gossip_timestamp int, "
                       "gossip_keyid text, "
                       "gossip_keydata text);"
 
                       "CREATE TABLE peer_history ("
                       "peer_email_addr text not null, "
                       "email_msgid text, "
                       "timestamp int, "
                       "keydata text);"
 
                       "CREATE INDEX peer_history_email "
                       "ON peer_history ("
                       "peer_email_addr);"
 
                       "CREATE TABLE gossip_history ("
                       "peer_email_addr text not null, "
                       "sender_email_addr text, "
                       "email_msgid text, "
                       "timestamp int, "
                       "gossip_keydata text);"
 
                       "CREATE INDEX gossip_history_email "
                       "ON gossip_history ("
                       "peer_email_addr);"
 
                       "CREATE TABLE schema ("
                       "version int);"
 
                       "INSERT into schema (version) values (1);"
 
                       "COMMIT TRANSACTION";
 
  if (sqlite3_exec(db, schema, NULL, NULL, &errmsg) != SQLITE_OK)
  {
    mutt_debug(LL_DEBUG1, "mutt_autocrypt_schema_init() returned %s\n", errmsg);
    sqlite3_free(errmsg);
    return -1;
  }
  return 0;
}

int mutt_autocrypt_schema_update(void)
{
  sqlite3_stmt *stmt = NULL;
  int rc = -1;
  struct AutocryptModuleData *mod_data = neomutt_get_module_data(NeoMutt, MODULE_ID_AUTOCRYPT);
  sqlite3 *db = mod_data->autocrypt_db;
 
  if (sqlite3_prepare_v2(db, "SELECT version FROM schema;", -1, &stmt, NULL) != SQLITE_OK)
    goto cleanup;
 
  if (sqlite3_step(stmt) != SQLITE_ROW)
    goto cleanup;
 
  int version = sqlite3_column_int(stmt, 0);
 
  if (version > 1)
  {
    /* L10N: The autocrypt database keeps track of schema version numbers.
       This error occurs if the version number is too high.
       Presumably because this is an old version of NeoMutt and the
       database was upgraded by a future version.  */
    mutt_error(_("Autocrypt database version is too new"));
    goto cleanup;
  }
 
  /* TODO: schema version upgrades go here.
   * Bump one by one, each update inside a transaction. */
 
  rc = 0;
 
cleanup:
  sqlite3_finalize(stmt);
  return rc;
}