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Added extra check for closed database in update_hook

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This commit is contained in:
Maas-Maarten Zeeman
2022-01-03 23:33:37 +01:00
parent 40456147da
commit 49aff0cf9a
2 changed files with 100 additions and 95 deletions
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193
c_src/esqlite3_nif.c
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@@ -309,14 +309,19 @@ update_callback(void *arg, int sqlite_operation_type, char const *sqlite_databas
}
static ERL_NIF_TERM
do_set_update_hook(ErlNifEnv *env, esqlite_connection *db, const ERL_NIF_TERM arg)
do_set_update_hook(ErlNifEnv *env, esqlite_connection *conn, const ERL_NIF_TERM arg)
{
if(!enif_get_local_pid(env, arg, &db->notification_pid))
return make_error_tuple(env, "invalid_pid");
int rc;
if(!enif_get_local_pid(env, arg, &conn->notification_pid)) {
return make_error_tuple(env, "invalid_pid");
}
sqlite3_update_hook(db->db, NULL, NULL);
if(sqlite3_update_hook(db->db, update_callback, db) != SQLITE_OK)
return make_error_tuple(env, "sqlite3_update_hook_fail");
if(!conn->db) {
return make_error_tuple(env, "closed");
}
sqlite3_update_hook(conn->db, update_callback, conn);
return make_atom(env, "ok");
}
@@ -707,34 +712,34 @@ evaluate_command(esqlite_command *cmd, esqlite_connection *conn)
}
switch(cmd->type) {
case cmd_open:
return do_open(cmd->env, conn, cmd->arg);
case cmd_update_hook_set:
return do_set_update_hook(cmd->env, conn, cmd->arg);
case cmd_exec:
return do_exec(cmd->env, conn, cmd->arg);
case cmd_changes:
return do_changes(cmd->env, conn, cmd->arg);
case cmd_prepare:
return do_prepare(cmd->env, conn, cmd->arg);
case cmd_multi_step:
return do_multi_step(cmd->env, conn->db, stmt->statement, cmd->arg);
case cmd_reset:
return do_reset(cmd->env, conn->db, stmt->statement);
case cmd_bind:
return do_bind(cmd->env, conn->db, stmt->statement, cmd->arg);
case cmd_column_names:
return do_column_names(cmd->env, stmt->statement);
case cmd_column_types:
return do_column_types(cmd->env, stmt->statement);
case cmd_close:
return do_close(cmd->env, conn, cmd->arg);
case cmd_insert:
return do_insert(cmd->env, conn, cmd->arg);
case cmd_get_autocommit:
return do_get_autocommit(cmd->env, conn);
default:
return make_error_tuple(cmd->env, "invalid_command");
case cmd_open:
return do_open(cmd->env, conn, cmd->arg);
case cmd_update_hook_set:
return do_set_update_hook(cmd->env, conn, cmd->arg);
case cmd_exec:
return do_exec(cmd->env, conn, cmd->arg);
case cmd_changes:
return do_changes(cmd->env, conn, cmd->arg);
case cmd_prepare:
return do_prepare(cmd->env, conn, cmd->arg);
case cmd_multi_step:
return do_multi_step(cmd->env, conn->db, stmt->statement, cmd->arg);
case cmd_reset:
return do_reset(cmd->env, conn->db, stmt->statement);
case cmd_bind:
return do_bind(cmd->env, conn->db, stmt->statement, cmd->arg);
case cmd_column_names:
return do_column_names(cmd->env, stmt->statement);
case cmd_column_types:
return do_column_types(cmd->env, stmt->statement);
case cmd_close:
return do_close(cmd->env, conn, cmd->arg);
case cmd_insert:
return do_insert(cmd->env, conn, cmd->arg);
case cmd_get_autocommit:
return do_get_autocommit(cmd->env, conn);
default:
return make_error_tuple(cmd->env, "invalid_command");
}
}
@@ -760,17 +765,17 @@ esqlite_connection_run(void *arg)
int continue_running = 1;
while(continue_running) {
cmd = queue_pop(db->commands);
cmd = queue_pop(db->commands);
if(cmd->type == cmd_stop) {
continue_running = 0;
if(cmd->type == cmd_stop) {
continue_running = 0;
} else if(cmd->type == cmd_notification) {
enif_send(NULL, &db->notification_pid, cmd->env, cmd->arg);
} else {
enif_send(NULL, &cmd->pid, cmd->env, make_answer(cmd, evaluate_command(cmd, db)));
enif_send(NULL, &cmd->pid, cmd->env, make_answer(cmd, evaluate_command(cmd, db)));
}
command_destroy(cmd);
command_destroy(cmd);
}
return NULL;
@@ -788,22 +793,22 @@ esqlite_start(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
/* Initialize the resource */
conn = enif_alloc_resource(esqlite_connection_type, sizeof(esqlite_connection));
if(!conn)
return make_error_tuple(env, "no_memory");
return make_error_tuple(env, "no_memory");
conn->db = NULL;
/* Create command queue */
conn->commands = queue_create();
if(!conn->commands) {
enif_release_resource(conn);
return make_error_tuple(env, "command_queue_create_failed");
enif_release_resource(conn);
return make_error_tuple(env, "command_queue_create_failed");
}
/* Start command processing thread */
conn->opts = enif_thread_opts_create("esqldb_thread_opts");
if(enif_thread_create("esqlite_connection", &conn->tid, esqlite_connection_run, conn, conn->opts) != 0) {
enif_release_resource(conn);
return make_error_tuple(env, "thread_create_failed");
enif_release_resource(conn);
return make_error_tuple(env, "thread_create_failed");
}
db_conn = enif_make_resource(env, conn);
@@ -823,21 +828,21 @@ esqlite_open(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
ErlNifPid pid;
if(argc != 4)
return enif_make_badarg(env);
return enif_make_badarg(env);
if(!enif_get_resource(env, argv[0], esqlite_connection_type, (void **) &db))
return enif_make_badarg(env);
return enif_make_badarg(env);
if(!enif_is_ref(env, argv[1]))
return make_error_tuple(env, "invalid_ref");
return make_error_tuple(env, "invalid_ref");
if(!enif_get_local_pid(env, argv[2], &pid))
return make_error_tuple(env, "invalid_pid");
return make_error_tuple(env, "invalid_pid");
if(!sqlite3_threadsafe())
return make_error_tuple(env, "sqlite3 not thread safe.");
return make_error_tuple(env, "sqlite3 not thread safe.");
/* Note, no check is made for the type of the argument */
cmd = command_create();
if(!cmd)
return make_error_tuple(env, "command_create_failed");
return make_error_tuple(env, "command_create_failed");
cmd->type = cmd_open;
cmd->ref = enif_make_copy(cmd->env, argv[1]);
@@ -855,17 +860,17 @@ set_update_hook(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
ErlNifPid pid;
if(argc != 4)
return enif_make_badarg(env);
return enif_make_badarg(env);
if(!enif_get_resource(env, argv[0], esqlite_connection_type, (void **) &db))
return enif_make_badarg(env);
return enif_make_badarg(env);
if(!enif_is_ref(env, argv[1]))
return make_error_tuple(env, "invalid_ref");
return make_error_tuple(env, "invalid_ref");
if(!enif_get_local_pid(env, argv[2], &pid))
return make_error_tuple(env, "invalid_pid");
return make_error_tuple(env, "invalid_pid");
cmd = command_create();
if(!cmd)
return make_error_tuple(env, "command_create_failed");
return make_error_tuple(env, "command_create_failed");
/* command */
cmd->type = cmd_update_hook_set;
@@ -1007,17 +1012,17 @@ esqlite_prepare(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
ErlNifPid pid;
if(argc != 4)
return enif_make_badarg(env);
return enif_make_badarg(env);
if(!enif_get_resource(env, argv[0], esqlite_connection_type, (void **) &conn))
return enif_make_badarg(env);
return enif_make_badarg(env);
if(!enif_is_ref(env, argv[1]))
return make_error_tuple(env, "invalid_ref");
return make_error_tuple(env, "invalid_ref");
if(!enif_get_local_pid(env, argv[2], &pid))
return make_error_tuple(env, "invalid_pid");
return make_error_tuple(env, "invalid_pid");
cmd = command_create();
if(!cmd)
return make_error_tuple(env, "command_create_failed");
return make_error_tuple(env, "command_create_failed");
cmd->type = cmd_prepare;
cmd->ref = enif_make_copy(cmd->env, argv[1]);
@@ -1039,20 +1044,20 @@ esqlite_bind(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
ErlNifPid pid;
if(argc != 5)
return enif_make_badarg(env);
return enif_make_badarg(env);
if(!enif_get_resource(env, argv[0], esqlite_connection_type, (void **) &conn))
return enif_make_badarg(env);
return enif_make_badarg(env);
if(!enif_get_resource(env, argv[1], esqlite_statement_type, (void **) &stmt))
return enif_make_badarg(env);
return enif_make_badarg(env);
if(!enif_is_ref(env, argv[2]))
return make_error_tuple(env, "invalid_ref");
return make_error_tuple(env, "invalid_ref");
if(!enif_get_local_pid(env, argv[3], &pid))
return make_error_tuple(env, "invalid_pid");
return make_error_tuple(env, "invalid_pid");
cmd = command_create();
if(!cmd)
return make_error_tuple(env, "command_create_failed");
return make_error_tuple(env, "command_create_failed");
cmd->type = cmd_bind;
cmd->ref = enif_make_copy(cmd->env, argv[2]);
@@ -1121,21 +1126,21 @@ esqlite_reset(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
ErlNifPid pid;
if(argc != 4)
return enif_make_badarg(env);
return enif_make_badarg(env);
if(!enif_get_resource(env, argv[0], esqlite_connection_type, (void **) &conn))
return enif_make_badarg(env);
return enif_make_badarg(env);
if(!enif_get_resource(env, argv[1], esqlite_statement_type, (void **) &stmt))
return enif_make_badarg(env);
return enif_make_badarg(env);
if(!enif_is_ref(env, argv[2]))
return make_error_tuple(env, "invalid_ref");
return make_error_tuple(env, "invalid_ref");
if(!enif_get_local_pid(env, argv[3], &pid))
return make_error_tuple(env, "invalid_pid");
return make_error_tuple(env, "invalid_pid");
if(!stmt->statement)
return make_error_tuple(env, "no_prepared_statement");
return make_error_tuple(env, "no_prepared_statement");
cmd = command_create();
if(!cmd)
return make_error_tuple(env, "command_create_failed");
return make_error_tuple(env, "command_create_failed");
cmd->type = cmd_reset;
cmd->ref = enif_make_copy(cmd->env, argv[2]);
@@ -1157,21 +1162,21 @@ esqlite_column_names(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
ErlNifPid pid;
if(argc != 4)
return enif_make_badarg(env);
return enif_make_badarg(env);
if(!enif_get_resource(env, argv[0], esqlite_connection_type, (void **) &conn))
return enif_make_badarg(env);
return enif_make_badarg(env);
if(!enif_get_resource(env, argv[1], esqlite_statement_type, (void **) &stmt))
return enif_make_badarg(env);
return enif_make_badarg(env);
if(!enif_is_ref(env, argv[2]))
return make_error_tuple(env, "invalid_ref");
return make_error_tuple(env, "invalid_ref");
if(!enif_get_local_pid(env, argv[3], &pid))
return make_error_tuple(env, "invalid_pid");
return make_error_tuple(env, "invalid_pid");
if(!stmt->statement)
return make_error_tuple(env, "no_prepared_statement");
return make_error_tuple(env, "no_prepared_statement");
cmd = command_create();
if(!cmd)
return make_error_tuple(env, "command_create_failed");
return make_error_tuple(env, "command_create_failed");
cmd->type = cmd_column_names;
cmd->ref = enif_make_copy(cmd->env, argv[2]);
@@ -1196,20 +1201,20 @@ esqlite_column_types(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
return enif_make_badarg(env);
if(!enif_get_resource(env, argv[0], esqlite_connection_type, (void **) &conn))
return enif_make_badarg(env);
return enif_make_badarg(env);
if(!enif_get_resource(env, argv[1], esqlite_statement_type, (void **) &stmt))
return enif_make_badarg(env);
return enif_make_badarg(env);
if(!enif_is_ref(env, argv[2]))
return make_error_tuple(env, "invalid_ref");
return make_error_tuple(env, "invalid_ref");
if(!enif_get_local_pid(env, argv[3], &pid))
return make_error_tuple(env, "invalid_pid");
return make_error_tuple(env, "invalid_pid");
if(!stmt->statement)
return make_error_tuple(env, "no_prepared_statement");
return make_error_tuple(env, "no_prepared_statement");
cmd = command_create();
if(!cmd)
return make_error_tuple(env, "command_create_failed");
return make_error_tuple(env, "command_create_failed");
cmd->type = cmd_column_types;
cmd->ref = enif_make_copy(cmd->env, argv[2]);
@@ -1248,15 +1253,15 @@ esqlite_close(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
ErlNifPid pid;
if(!enif_get_resource(env, argv[0], esqlite_connection_type, (void **) &conn))
return enif_make_badarg(env);
return enif_make_badarg(env);
if(!enif_is_ref(env, argv[1]))
return make_error_tuple(env, "invalid_ref");
return make_error_tuple(env, "invalid_ref");
if(!enif_get_local_pid(env, argv[2], &pid))
return make_error_tuple(env, "invalid_pid");
return make_error_tuple(env, "invalid_pid");
cmd = command_create();
if(!cmd)
return make_error_tuple(env, "command_create_failed");
return make_error_tuple(env, "command_create_failed");
cmd->type = cmd_close;
cmd->ref = enif_make_copy(cmd->env, argv[1]);
@@ -1274,15 +1279,15 @@ on_load(ErlNifEnv* env, void** priv, ERL_NIF_TERM info)
ErlNifResourceType *rt;
rt = enif_open_resource_type(env, "esqlite3_nif", "esqlite_connection_type",
destruct_esqlite_connection, ERL_NIF_RT_CREATE, NULL);
destruct_esqlite_connection, ERL_NIF_RT_CREATE, NULL);
if(!rt)
return -1;
return -1;
esqlite_connection_type = rt;
rt = enif_open_resource_type(env, "esqlite3_nif", "esqlite_statement_type",
destruct_esqlite_statement, ERL_NIF_RT_CREATE, NULL);
destruct_esqlite_statement, ERL_NIF_RT_CREATE, NULL);
if(!rt)
return -1;
return -1;
esqlite_statement_type = rt;
atom_esqlite3 = make_atom(env, "esqlite3");