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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-28 09:51:24 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-28 09:51:24 +0000
commitf7548d6d28c313cf80e6f3ef89aed16a19815df1 (patch)
treea3f6f2a3f247293bee59ecd28e8cd8ceb6ca064a /src/dict
parentInitial commit. (diff)
downloaddovecot-upstream.tar.xz
dovecot-upstream.zip
Adding upstream version 1:2.3.19.1+dfsg1.upstream/1%2.3.19.1+dfsg1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--src/dict/Makefile.am43
-rw-r--r--src/dict/Makefile.in847
-rw-r--r--src/dict/dict-commands.c768
-rw-r--r--src/dict/dict-commands.h21
-rw-r--r--src/dict/dict-connection.c272
-rw-r--r--src/dict/dict-connection.h48
-rw-r--r--src/dict/dict-init-cache.c164
-rw-r--r--src/dict/dict-init-cache.h12
-rw-r--r--src/dict/dict-settings.c117
-rw-r--r--src/dict/dict-settings.h15
-rw-r--r--src/dict/main.c179
-rw-r--r--src/dict/main.h6
12 files changed, 2492 insertions, 0 deletions
diff --git a/src/dict/Makefile.am b/src/dict/Makefile.am
new file mode 100644
index 0000000..e408046
--- /dev/null
+++ b/src/dict/Makefile.am
@@ -0,0 +1,43 @@
+pkglibexecdir = $(libexecdir)/dovecot
+
+pkglibexec_PROGRAMS = dict
+
+AM_CPPFLAGS = \
+ -I$(top_srcdir)/src/lib \
+ -I$(top_srcdir)/src/lib-master \
+ -I$(top_srcdir)/src/lib-settings \
+ -I$(top_srcdir)/src/lib-dict \
+ -I$(top_srcdir)/src/lib-sql \
+ -DDICT_MODULE_DIR=\""$(moduledir)/dict"\" \
+ -DPKG_RUNDIR=\""$(rundir)"\" \
+ $(BINARY_CFLAGS)
+
+dict_LDFLAGS = -export-dynamic \
+ $(BINARY_LDFLAGS)
+
+libs = \
+ ../lib-dict-backend/libdict_backend.la \
+ $(LIBDOVECOT_SQL)
+
+dict_LDADD = \
+ $(libs) \
+ $(LIBDOVECOT) \
+ $(DICT_LIBS) \
+ $(SQL_LIBS) \
+ -lm
+
+dict_DEPENDENCIES = $(libs) $(LIBDOVECOT_DEPS)
+
+dict_SOURCES = \
+ dict-connection.c \
+ dict-commands.c \
+ dict-settings.c \
+ dict-init-cache.c \
+ main.c
+
+noinst_HEADERS = \
+ dict-connection.h \
+ dict-commands.h \
+ dict-settings.h \
+ dict-init-cache.h \
+ main.h
diff --git a/src/dict/Makefile.in b/src/dict/Makefile.in
new file mode 100644
index 0000000..f2dd45e
--- /dev/null
+++ b/src/dict/Makefile.in
@@ -0,0 +1,847 @@
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+
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+ -DPKG_RUNDIR=\""$(rundir)"\" \
+ $(BINARY_CFLAGS)
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+# Otherwise a system limit (for SysV at least) may be exceeded.
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diff --git a/src/dict/dict-commands.c b/src/dict/dict-commands.c
new file mode 100644
index 0000000..df31ac3
--- /dev/null
+++ b/src/dict/dict-commands.c
@@ -0,0 +1,768 @@
+/* Copyright (c) 2005-2018 Dovecot authors, see the included COPYING file */
+
+#include "lib.h"
+#include "array.h"
+#include "ostream.h"
+#include "str.h"
+#include "strescape.h"
+#include "stats-dist.h"
+#include "time-util.h"
+#include "dict-private.h"
+#include "dict-client.h"
+#include "dict-settings.h"
+#include "dict-connection.h"
+#include "dict-commands.h"
+#include "main.h"
+
+#define DICT_CLIENT_PROTOCOL_TIMINGS_MIN_VERSION 1
+#define DICT_CLIENT_PROTOCOL_UNORDERED_MIN_VERSION 1
+#define DICT_OUTPUT_OPTIMAL_SIZE 1024
+
+struct dict_cmd_func {
+ enum dict_protocol_cmd cmd;
+ int (*func)(struct dict_connection_cmd *cmd, const char *const *args);
+};
+
+struct dict_connection_cmd {
+ const struct dict_cmd_func *cmd;
+ struct dict_connection *conn;
+ struct timeval start_timeval;
+ struct event *event;
+ char *reply;
+
+ struct dict_iterate_context *iter;
+ enum dict_iterate_flags iter_flags;
+
+ unsigned int async_reply_id;
+ unsigned int trans_id; /* obsolete */
+ unsigned int rows;
+
+ bool uncork_pending;
+};
+
+struct dict_command_stats cmd_stats;
+
+static int cmd_iterate_flush(struct dict_connection_cmd *cmd);
+
+static bool dict_connection_cmd_output_more(struct dict_connection_cmd *cmd);
+
+static void dict_connection_cmd_free(struct dict_connection_cmd *cmd)
+{
+ const char *error;
+
+ if (dict_iterate_deinit(&cmd->iter, &error) < 0)
+ e_error(cmd->event, "dict_iterate() failed: %s", error);
+ i_free(cmd->reply);
+ if (cmd->uncork_pending)
+ o_stream_uncork(cmd->conn->conn.output);
+
+ if (dict_connection_unref(cmd->conn) && !cmd->conn->destroyed)
+ connection_input_resume(&cmd->conn->conn);
+ event_unref(&cmd->event);
+ i_free(cmd);
+}
+
+static void dict_connection_cmd_remove(struct dict_connection_cmd *cmd)
+{
+ struct dict_connection_cmd *const *cmds;
+ unsigned int i, count;
+
+ cmds = array_get(&cmd->conn->cmds, &count);
+ for (i = 0; i < count; i++) {
+ if (cmds[i] == cmd) {
+ array_delete(&cmd->conn->cmds, i, 1);
+ dict_connection_cmd_free(cmd);
+ return;
+ }
+ }
+ i_unreached();
+}
+
+static void dict_connection_cmds_flush(struct dict_connection *conn)
+{
+ struct dict_connection_cmd *cmd, *const *first_cmdp;
+
+ i_assert(conn->conn.minor_version < DICT_CLIENT_PROTOCOL_UNORDERED_MIN_VERSION);
+
+ dict_connection_ref(conn);
+ while (array_count(&conn->cmds) > 0) {
+ first_cmdp = array_front(&conn->cmds);
+ cmd = *first_cmdp;
+
+ i_assert(cmd->async_reply_id == 0);
+
+ /* we may be able to start outputting iterations now. */
+ if (cmd->iter != NULL)
+ (void)cmd_iterate_flush(cmd);
+
+ if (cmd->reply == NULL) {
+ /* command not finished yet */
+ break;
+ }
+
+ o_stream_nsend_str(conn->conn.output, cmd->reply);
+ dict_connection_cmd_remove(cmd);
+ }
+ dict_connection_unref_safe(conn);
+}
+
+static void dict_connection_cmd_try_flush(struct dict_connection_cmd **_cmd)
+{
+ struct dict_connection_cmd *cmd = *_cmd;
+
+ *_cmd = NULL;
+ if (cmd->conn->conn.minor_version < DICT_CLIENT_PROTOCOL_UNORDERED_MIN_VERSION) {
+ dict_connection_cmds_flush(cmd->conn);
+ return;
+ }
+ i_assert(cmd->async_reply_id != 0);
+ i_assert(cmd->reply != NULL);
+
+ o_stream_nsend_str(cmd->conn->conn.output, t_strdup_printf("%c%u\t%s",
+ DICT_PROTOCOL_REPLY_ASYNC_REPLY,
+ cmd->async_reply_id, cmd->reply));
+ dict_connection_cmd_remove(cmd);
+}
+
+static void dict_connection_cmd_async(struct dict_connection_cmd *cmd)
+{
+ if (cmd->conn->conn.minor_version < DICT_CLIENT_PROTOCOL_UNORDERED_MIN_VERSION)
+ return;
+
+ i_assert(cmd->async_reply_id == 0);
+ cmd->async_reply_id = ++cmd->conn->async_id_counter;
+ if (cmd->async_reply_id == 0)
+ cmd->async_reply_id = ++cmd->conn->async_id_counter;
+ o_stream_nsend_str(cmd->conn->conn.output, t_strdup_printf("%c%u\n",
+ DICT_PROTOCOL_REPLY_ASYNC_ID, cmd->async_reply_id));
+}
+
+static void
+cmd_stats_update(struct dict_connection_cmd *cmd, struct stats_dist *stats)
+{
+ long long diff;
+
+ if (!dict_settings->verbose_proctitle)
+ return;
+
+ diff = timeval_diff_usecs(&ioloop_timeval, &cmd->start_timeval);
+ if (diff < 0)
+ diff = 0;
+ stats_dist_add(stats, diff);
+ dict_proctitle_update_later();
+}
+
+static void
+dict_cmd_reply_handle_stats(struct dict_connection_cmd *cmd,
+ string_t *str, struct stats_dist *stats)
+{
+ io_loop_time_refresh();
+ cmd_stats_update(cmd, stats);
+
+ if (cmd->conn->conn.minor_version < DICT_CLIENT_PROTOCOL_TIMINGS_MIN_VERSION)
+ return;
+ str_printfa(str, "\t%ld\t%u\t%ld\t%u",
+ (long)cmd->start_timeval.tv_sec,
+ (unsigned int)cmd->start_timeval.tv_usec,
+ (long)ioloop_timeval.tv_sec,
+ (unsigned int)ioloop_timeval.tv_usec);
+}
+
+static void
+cmd_lookup_write_reply(struct dict_connection_cmd *cmd,
+ const char *const *values, string_t *str)
+{
+ string_t *tmp;
+
+ i_assert(values[0] != NULL);
+
+ if (cmd->conn->conn.minor_version < DICT_CLIENT_PROTOCOL_VERSION_MIN_MULTI_OK ||
+ values[1] == NULL) {
+ str_append_c(str, DICT_PROTOCOL_REPLY_OK);
+ str_append_tabescaped(str, values[0]);
+ return;
+ }
+ /* the results get double-tabescaped so they end up becoming a single
+ parameter */
+ tmp = t_str_new(128);
+ for (unsigned int i = 0; values[i] != NULL; i++) {
+ str_append_c(tmp, '\t');
+ str_append_tabescaped(tmp, values[i]);
+ }
+ str_append_c(str, DICT_PROTOCOL_REPLY_MULTI_OK);
+ str_append_tabescaped(str, str_c(tmp) + 1);
+}
+
+static void
+cmd_lookup_callback(const struct dict_lookup_result *result,
+ struct dict_connection_cmd *cmd)
+{
+ string_t *str = t_str_new(128);
+
+ event_set_name(cmd->event, "dict_server_lookup_finished");
+ if (result->ret > 0) {
+ cmd_lookup_write_reply(cmd, result->values, str);
+ e_debug(cmd->event, "Lookup finished");
+ } else if (result->ret == 0) {
+ event_add_str(cmd->event, "key_not_found", "yes");
+ str_append_c(str, DICT_PROTOCOL_REPLY_NOTFOUND);
+ e_debug(cmd->event, "Lookup finished without results");
+ } else {
+ event_add_str(cmd->event, "error", result->error);
+ e_error(cmd->event, "Lookup failed: %s", result->error);
+ str_append_c(str, DICT_PROTOCOL_REPLY_FAIL);
+ str_append_tabescaped(str, result->error);
+ }
+ dict_cmd_reply_handle_stats(cmd, str, cmd_stats.lookups);
+ str_append_c(str, '\n');
+
+ cmd->reply = i_strdup(str_c(str));
+ dict_connection_cmd_try_flush(&cmd);
+}
+
+static int cmd_lookup(struct dict_connection_cmd *cmd, const char *const *args)
+{
+ const char *username;
+
+ if (str_array_length(args) < 1) {
+ e_error(cmd->event, "LOOKUP: broken input");
+ return -1;
+ }
+ username = args[1];
+
+ /* <key> [<username>] */
+ dict_connection_cmd_async(cmd);
+ event_add_str(cmd->event, "key", args[0]);
+ event_add_str(cmd->event, "user", username);
+ const struct dict_op_settings set = {
+ .username = username,
+ };
+ dict_lookup_async(cmd->conn->dict, &set, args[0], cmd_lookup_callback, cmd);
+ return 1;
+}
+
+static bool dict_connection_flush_if_full(struct dict_connection *conn)
+{
+ if (o_stream_get_buffer_used_size(conn->conn.output) >
+ DICT_OUTPUT_OPTIMAL_SIZE) {
+ if (o_stream_flush(conn->conn.output) <= 0) {
+ /* continue later when there's more space
+ in output buffer */
+ o_stream_set_flush_pending(conn->conn.output, TRUE);
+ conn->iter_flush_pending = TRUE;
+ return FALSE;
+ }
+ /* flushed everything, continue */
+ }
+ return TRUE;
+}
+
+static void
+cmd_iterate_flush_finish(struct dict_connection_cmd *cmd, string_t *str)
+{
+ const char *error;
+
+ event_set_name(cmd->event, "dict_server_iteration_finished");
+ str_truncate(str, 0);
+ if (dict_iterate_deinit(&cmd->iter, &error) < 0) {
+ event_add_str(cmd->event, "error", error);
+ e_error(cmd->event, "dict_iterate() failed: %s", error);
+ str_printfa(str, "%c%s", DICT_PROTOCOL_REPLY_FAIL, error);
+ } else {
+ event_add_int(cmd->event, "rows", cmd->rows);
+ e_debug(cmd->event, "Iteration finished");
+ }
+ dict_cmd_reply_handle_stats(cmd, str, cmd_stats.iterations);
+ str_append_c(str, '\n');
+
+ cmd->reply = i_strdup(str_c(str));
+}
+
+static int cmd_iterate_flush(struct dict_connection_cmd *cmd)
+{
+ string_t *str = t_str_new(256);
+ const char *key, *const *values;
+
+ if (cmd->conn->destroyed) {
+ cmd_iterate_flush_finish(cmd, str);
+ return 1;
+ }
+
+ if (!dict_connection_flush_if_full(cmd->conn))
+ return 0;
+
+ while (dict_iterate_values(cmd->iter, &key, &values)) {
+ cmd->rows++;
+ str_truncate(str, 0);
+ if (cmd->async_reply_id != 0) {
+ str_append_c(str, DICT_PROTOCOL_REPLY_ASYNC_REPLY);
+ str_printfa(str, "%u\t", cmd->async_reply_id);
+ }
+ str_append_c(str, DICT_PROTOCOL_REPLY_OK);
+ str_append_tabescaped(str, key);
+ str_append_c(str, '\t');
+ if ((cmd->iter_flags & DICT_ITERATE_FLAG_NO_VALUE) == 0) {
+ str_append_tabescaped(str, values[0]);
+ for (unsigned int i = 1; values[i] != NULL; i++) {
+ str_append_c(str, '\t');
+ str_append_tabescaped(str, values[i]);
+ }
+ }
+ str_append_c(str, '\n');
+ o_stream_nsend(cmd->conn->conn.output, str_data(str), str_len(str));
+
+ if (!dict_connection_flush_if_full(cmd->conn))
+ return 0;
+ }
+ if (dict_iterate_has_more(cmd->iter)) {
+ /* wait for the next iteration callback */
+ return 0;
+ }
+
+ cmd_iterate_flush_finish(cmd, str);
+ return 1;
+}
+
+static void cmd_iterate_callback(struct dict_connection_cmd *cmd)
+{
+ struct dict_connection *conn = cmd->conn;
+
+ dict_connection_ref(conn);
+ o_stream_cork(conn->conn.output);
+ /* Don't uncork if we're just waiting for more input from the dict
+ driver. Some dict drivers (e.g. dict-client) don't do any kind of
+ buffering internally, so this callback can write out only a single
+ iteration. By leaving the ostream corked it doesn't result in many
+ tiny writes. However, we could be here also because the connection
+ output buffer is full already, in which case don't want to leave a
+ cork. */
+ conn->iter_flush_pending = FALSE;
+ cmd->uncork_pending = FALSE;
+ if (dict_connection_cmd_output_more(cmd)) {
+ /* NOTE: cmd may be freed now */
+ o_stream_uncork(conn->conn.output);
+ } else if (conn->iter_flush_pending) {
+ /* Don't leave the stream uncorked or we might get stuck. */
+ o_stream_uncork(conn->conn.output);
+ } else {
+ /* It's possible that the command gets finished via some other
+ code path. To make sure this doesn't cause hangs, uncork the
+ output when command gets freed. */
+ cmd->uncork_pending = TRUE;
+ }
+ dict_connection_unref_safe(conn);
+}
+
+static int cmd_iterate(struct dict_connection_cmd *cmd, const char *const *args)
+{
+ const char *username;
+ unsigned int flags;
+ uint64_t max_rows;
+
+ if (str_array_length(args) < 3 ||
+ str_to_uint(args[0], &flags) < 0 ||
+ str_to_uint64(args[1], &max_rows) < 0) {
+ e_error(cmd->event, "ITERATE: broken input");
+ return -1;
+ }
+ dict_connection_cmd_async(cmd);
+ username = args[3];
+
+ const struct dict_op_settings set = {
+ .username = username,
+ };
+
+ /* <flags> <max_rows> <path> [<username>] */
+ flags |= DICT_ITERATE_FLAG_ASYNC;
+ event_add_str(cmd->event, "key", args[2]);
+ event_add_str(cmd->event, "user", username);
+ cmd->iter = dict_iterate_init(cmd->conn->dict, &set, args[2], flags);
+ cmd->iter_flags = flags;
+ if (max_rows > 0)
+ dict_iterate_set_limit(cmd->iter, max_rows);
+ dict_iterate_set_async_callback(cmd->iter, cmd_iterate_callback, cmd);
+ (void)dict_connection_cmd_output_more(cmd);
+ return 1;
+}
+
+static struct dict_connection_transaction *
+dict_connection_transaction_lookup(struct dict_connection *conn,
+ unsigned int id)
+{
+ struct dict_connection_transaction *transaction;
+
+ if (!array_is_created(&conn->transactions))
+ return NULL;
+
+ array_foreach_modifiable(&conn->transactions, transaction) {
+ if (transaction->id == id)
+ return transaction;
+ }
+ return NULL;
+}
+
+static void
+dict_connection_transaction_array_remove(struct dict_connection *conn,
+ unsigned int id)
+{
+ const struct dict_connection_transaction *transactions;
+ unsigned int i, count;
+
+ transactions = array_get(&conn->transactions, &count);
+ for (i = 0; i < count; i++) {
+ if (transactions[i].id == id) {
+ i_assert(transactions[i].ctx == NULL);
+ array_delete(&conn->transactions, i, 1);
+ return;
+ }
+ }
+ i_unreached();
+}
+
+static int cmd_begin(struct dict_connection_cmd *cmd, const char *const *args)
+{
+ struct dict_connection_transaction *trans;
+ unsigned int id;
+ const char *username;
+
+ if (str_array_length(args) < 1) {
+ e_error(cmd->event, "BEGIN: broken input");
+ return -1;
+ }
+ username = args[1];
+
+ /* <id> [<username>] */
+ if (str_to_uint(args[0], &id) < 0) {
+ e_error(cmd->event, "Invalid transaction ID %s", args[0]);
+ return -1;
+ }
+ if (dict_connection_transaction_lookup(cmd->conn, id) != NULL) {
+ e_error(cmd->event, "Transaction ID %u already exists", id);
+ return -1;
+ }
+
+ if (!array_is_created(&cmd->conn->transactions))
+ i_array_init(&cmd->conn->transactions, 4);
+
+ struct dict_op_settings set = {
+ .username = username,
+ };
+ trans = array_append_space(&cmd->conn->transactions);
+ trans->id = id;
+ trans->conn = cmd->conn;
+ trans->ctx = dict_transaction_begin(cmd->conn->dict, &set);
+ return 0;
+}
+
+static int
+dict_connection_transaction_lookup_parse(struct dict_connection *conn,
+ const char *id_str,
+ struct dict_connection_transaction **trans_r)
+{
+ unsigned int id;
+
+ if (str_to_uint(id_str, &id) < 0) {
+ e_error(conn->conn.event, "Invalid transaction ID %s", id_str);
+ return -1;
+ }
+ *trans_r = dict_connection_transaction_lookup(conn, id);
+ if (*trans_r == NULL) {
+ e_error(conn->conn.event, "Transaction ID %u doesn't exist", id);
+ return -1;
+ }
+ return 0;
+}
+
+static void
+cmd_commit_finish(struct dict_connection_cmd *cmd,
+ const struct dict_commit_result *result, bool async)
+{
+ string_t *str = t_str_new(64);
+ char chr;
+
+ event_set_name(cmd->event, "dict_server_transaction_finished");
+ switch (result->ret) {
+ case DICT_COMMIT_RET_OK:
+ chr = DICT_PROTOCOL_REPLY_OK;
+ break;
+ case DICT_COMMIT_RET_NOTFOUND:
+ event_add_str(cmd->event, "key_not_found", "yes");
+ chr = DICT_PROTOCOL_REPLY_NOTFOUND;
+ break;
+ case DICT_COMMIT_RET_WRITE_UNCERTAIN:
+ i_assert(result->error != NULL);
+ event_add_str(cmd->event, "write_uncertain", "yes");
+ event_add_str(cmd->event, "error", result->error);
+ chr = DICT_PROTOCOL_REPLY_WRITE_UNCERTAIN;
+ break;
+ case DICT_COMMIT_RET_FAILED:
+ default:
+ i_assert(result->error != NULL);
+ event_add_str(cmd->event, "error", result->error);
+ chr = DICT_PROTOCOL_REPLY_FAIL;
+ break;
+ }
+ if (async)
+ str_append_c(str, DICT_PROTOCOL_REPLY_ASYNC_COMMIT);
+ str_printfa(str, "%c%u", chr, cmd->trans_id);
+ if (chr != DICT_PROTOCOL_REPLY_OK &&
+ chr != DICT_PROTOCOL_REPLY_NOTFOUND) {
+ str_append_c(str, '\t');
+ str_append_tabescaped(str, result->error);
+ }
+ dict_cmd_reply_handle_stats(cmd, str, cmd_stats.commits);
+ str_append_c(str, '\n');
+ cmd->reply = i_strdup(str_c(str));
+
+ if (result->ret < 0)
+ e_debug(cmd->event, "Transaction finished: %s", result->error);
+ else
+ e_debug(cmd->event, "Transaction finished");
+ dict_connection_transaction_array_remove(cmd->conn, cmd->trans_id);
+ dict_connection_cmd_try_flush(&cmd);
+}
+
+static void cmd_commit_callback(const struct dict_commit_result *result,
+ struct dict_connection_cmd *cmd)
+{
+ cmd_commit_finish(cmd, result, FALSE);
+}
+
+static void cmd_commit_callback_async(const struct dict_commit_result *result,
+ struct dict_connection_cmd *cmd)
+{
+ cmd_commit_finish(cmd, result, TRUE);
+}
+
+static int
+cmd_commit(struct dict_connection_cmd *cmd, const char *const *args)
+{
+ struct dict_connection_transaction *trans;
+
+ if (dict_connection_transaction_lookup_parse(cmd->conn, args[0], &trans) < 0)
+ return -1;
+ cmd->trans_id = trans->id;
+ event_add_str(cmd->event, "user", trans->ctx->set.username);
+
+ dict_connection_cmd_async(cmd);
+ dict_transaction_commit_async(&trans->ctx, cmd_commit_callback, cmd);
+ return 1;
+}
+
+static int
+cmd_commit_async(struct dict_connection_cmd *cmd, const char *const *args)
+{
+ struct dict_connection_transaction *trans;
+
+ if (dict_connection_transaction_lookup_parse(cmd->conn, args[0], &trans) < 0)
+ return -1;
+ cmd->trans_id = trans->id;
+ event_add_str(cmd->event, "user", trans->ctx->set.username);
+
+ dict_connection_cmd_async(cmd);
+ dict_transaction_commit_async(&trans->ctx, cmd_commit_callback_async, cmd);
+ return 1;
+}
+
+static int
+cmd_rollback(struct dict_connection_cmd *cmd, const char *const *args)
+{
+ struct dict_connection_transaction *trans;
+
+ if (dict_connection_transaction_lookup_parse(cmd->conn, args[0], &trans) < 0)
+ return -1;
+
+ event_add_str(cmd->event, "user", trans->ctx->set.username);
+ dict_transaction_rollback(&trans->ctx);
+ dict_connection_transaction_array_remove(cmd->conn, trans->id);
+ return 0;
+}
+
+static int cmd_set(struct dict_connection_cmd *cmd, const char *const *args)
+{
+ struct dict_connection_transaction *trans;
+
+ /* <id> <key> <value> */
+ if (str_array_length(args) != 3) {
+ e_error(cmd->event, "SET: broken input");
+ return -1;
+ }
+
+ if (dict_connection_transaction_lookup_parse(cmd->conn, args[0], &trans) < 0)
+ return -1;
+ event_add_str(cmd->event, "user", trans->ctx->set.username);
+ dict_set(trans->ctx, args[1], args[2]);
+ return 0;
+}
+
+static int cmd_unset(struct dict_connection_cmd *cmd, const char *const *args)
+{
+ struct dict_connection_transaction *trans;
+
+ /* <id> <key> */
+ if (str_array_length(args) != 2) {
+ e_error(cmd->event, "UNSET: broken input");
+ return -1;
+ }
+
+ if (dict_connection_transaction_lookup_parse(cmd->conn, args[0], &trans) < 0)
+ return -1;
+ dict_unset(trans->ctx, args[1]);
+ return 0;
+}
+
+static int
+cmd_atomic_inc(struct dict_connection_cmd *cmd, const char *const *args)
+{
+ struct dict_connection_transaction *trans;
+ long long diff;
+
+ /* <id> <key> <diff> */
+ if (str_array_length(args) != 3 ||
+ str_to_llong(args[2], &diff) < 0) {
+ e_error(cmd->event, "ATOMIC_INC: broken input");
+ return -1;
+ }
+
+ if (dict_connection_transaction_lookup_parse(cmd->conn, args[0], &trans) < 0)
+ return -1;
+
+ dict_atomic_inc(trans->ctx, args[1], diff);
+ return 0;
+}
+
+static int cmd_timestamp(struct dict_connection_cmd *cmd, const char *const *args)
+{
+ struct dict_connection_transaction *trans;
+ long long tv_sec;
+ unsigned int tv_nsec;
+
+ /* <id> <secs> <nsecs> */
+ if (str_array_length(args) != 3 ||
+ str_to_llong(args[1], &tv_sec) < 0 ||
+ str_to_uint(args[2], &tv_nsec) < 0) {
+ e_error(cmd->event, "TIMESTAMP: broken input");
+ return -1;
+ }
+
+ if (dict_connection_transaction_lookup_parse(cmd->conn, args[0], &trans) < 0)
+ return -1;
+
+ struct timespec ts = {
+ .tv_sec = tv_sec,
+ .tv_nsec = tv_nsec
+ };
+ dict_transaction_set_timestamp(trans->ctx, &ts);
+ return 0;
+}
+
+static const struct dict_cmd_func cmds[] = {
+ { DICT_PROTOCOL_CMD_LOOKUP, cmd_lookup },
+ { DICT_PROTOCOL_CMD_ITERATE, cmd_iterate },
+ { DICT_PROTOCOL_CMD_BEGIN, cmd_begin },
+ { DICT_PROTOCOL_CMD_COMMIT, cmd_commit },
+ { DICT_PROTOCOL_CMD_COMMIT_ASYNC, cmd_commit_async },
+ { DICT_PROTOCOL_CMD_ROLLBACK, cmd_rollback },
+ { DICT_PROTOCOL_CMD_SET, cmd_set },
+ { DICT_PROTOCOL_CMD_UNSET, cmd_unset },
+ { DICT_PROTOCOL_CMD_ATOMIC_INC, cmd_atomic_inc },
+ { DICT_PROTOCOL_CMD_TIMESTAMP, cmd_timestamp },
+
+ { 0, NULL }
+};
+
+static const struct dict_cmd_func *dict_command_find(enum dict_protocol_cmd cmd)
+{
+ unsigned int i;
+
+ for (i = 0; cmds[i].cmd != '\0'; i++) {
+ if (cmds[i].cmd == cmd)
+ return &cmds[i];
+ }
+ return NULL;
+}
+
+int dict_command_input(struct dict_connection *conn, const char *line)
+{
+ const struct dict_cmd_func *cmd_func;
+ struct dict_connection_cmd *cmd;
+ int ret;
+ const char *const *args;
+
+ cmd_func = dict_command_find((enum dict_protocol_cmd)*line);
+ if (cmd_func == NULL) {
+ e_error(conn->conn.event, "Unknown command %c", *line);
+ return -1;
+ }
+
+ cmd = i_new(struct dict_connection_cmd, 1);
+ cmd->conn = conn;
+ cmd->event = event_create(cmd->conn->conn.event);
+ cmd->cmd = cmd_func;
+ cmd->start_timeval = ioloop_timeval;
+ array_push_back(&conn->cmds, &cmd);
+ dict_connection_ref(conn);
+
+ args = t_strsplit_tabescaped(line + 1);
+ if ((ret = cmd_func->func(cmd, args)) <= 0) {
+ dict_connection_cmd_remove(cmd);
+ return ret;
+ }
+ return 0;
+}
+
+static bool dict_connection_cmds_try_output_more(struct dict_connection *conn)
+{
+ struct dict_connection_cmd *cmd;
+
+ /* only iterators may be returning a lot of data */
+ array_foreach_elem(&conn->cmds, cmd) {
+ if (cmd->iter == NULL) {
+ /* not an iterator */
+ } else if (cmd_iterate_flush(cmd) == 0) {
+ /* unfinished */
+ } else {
+ dict_connection_cmd_try_flush(&cmd);
+ /* cmd should be freed now, restart output */
+ return TRUE;
+ }
+ if (conn->conn.minor_version < DICT_CLIENT_PROTOCOL_TIMINGS_MIN_VERSION)
+ break;
+ /* try to flush the rest */
+ }
+ return FALSE;
+}
+
+void dict_connection_cmds_output_more(struct dict_connection *conn)
+{
+ while (array_count(&conn->cmds) > 0) {
+ if (!dict_connection_cmds_try_output_more(conn))
+ break;
+ }
+}
+
+static bool dict_connection_cmd_output_more(struct dict_connection_cmd *cmd)
+{
+ struct dict_connection_cmd *const *first_cmdp;
+
+ if (cmd->conn->conn.minor_version < DICT_CLIENT_PROTOCOL_TIMINGS_MIN_VERSION) {
+ first_cmdp = array_front(&cmd->conn->cmds);
+ if (*first_cmdp != cmd)
+ return TRUE;
+ }
+ return dict_connection_cmds_try_output_more(cmd->conn);
+}
+
+void dict_commands_init(void)
+{
+ cmd_stats.lookups = stats_dist_init();
+ cmd_stats.iterations = stats_dist_init();
+ cmd_stats.commits = stats_dist_init();
+}
+
+void dict_commands_deinit(void)
+{
+ stats_dist_deinit(&cmd_stats.lookups);
+ stats_dist_deinit(&cmd_stats.iterations);
+ stats_dist_deinit(&cmd_stats.commits);
+}
diff --git a/src/dict/dict-commands.h b/src/dict/dict-commands.h
new file mode 100644
index 0000000..ce4a04f
--- /dev/null
+++ b/src/dict/dict-commands.h
@@ -0,0 +1,21 @@
+#ifndef DICT_COMMANDS_H
+#define DICT_COMMANDS_H
+
+struct dict_connection;
+
+struct dict_command_stats {
+ struct stats_dist *lookups;
+ struct stats_dist *iterations;
+ struct stats_dist *commits;
+};
+
+extern struct dict_command_stats cmd_stats;
+
+int dict_command_input(struct dict_connection *conn, const char *line);
+
+void dict_connection_cmds_output_more(struct dict_connection *conn);
+
+void dict_commands_init(void);
+void dict_commands_deinit(void);
+
+#endif
diff --git a/src/dict/dict-connection.c b/src/dict/dict-connection.c
new file mode 100644
index 0000000..6a87c27
--- /dev/null
+++ b/src/dict/dict-connection.c
@@ -0,0 +1,272 @@
+/* Copyright (c) 2005-2018 Dovecot authors, see the included COPYING file */
+
+#include "lib.h"
+#include "array.h"
+#include "ioloop.h"
+#include "istream.h"
+#include "ostream.h"
+#include "llist.h"
+#include "strescape.h"
+#include "master-service.h"
+#include "dict-client.h"
+#include "dict-settings.h"
+#include "dict-commands.h"
+#include "dict-connection.h"
+#include "dict-init-cache.h"
+
+#include <unistd.h>
+
+#define DICT_CONN_MAX_PENDING_COMMANDS 1000
+
+static int dict_connection_dict_init(struct dict_connection *conn);
+static void dict_connection_destroy(struct connection *_conn);
+struct connection_list *dict_connections = NULL;
+
+static struct event_category dict_server_event_category = {
+ .name = "dict-server",
+};
+
+static int dict_connection_handshake_args(struct connection *_conn,
+ const char *const *args)
+{
+ unsigned int major, value_type_num;
+ struct dict_connection *conn =
+ container_of(_conn, struct dict_connection, conn);
+
+ /* protocol handshake is Hmajor minor value_type */
+ if (str_array_length(args) < 5 || **args != 'H')
+ return -1;
+
+ /* check major version which comes right after 'H' in the
+ first parameter, store minor version. */
+ if (str_to_uint(args[0]+1, &major) < 0 ||
+ str_to_uint(args[1], &conn->conn.minor_version) < 0 ||
+ major != DICT_CLIENT_PROTOCOL_MAJOR_VERSION)
+ return -1;
+
+ /* check value type */
+ if (str_to_uint(args[2], &value_type_num) < 0 ||
+ value_type_num >= DICT_DATA_TYPE_LAST)
+ return -1;
+
+ conn->value_type = (enum dict_data_type)value_type_num;
+ conn->name = i_strdup(args[4]);
+
+ /* try initialize the given dict */
+ if (dict_connection_dict_init(conn) < 0)
+ return -1;
+
+ return 1;
+}
+
+static int dict_connection_handshake_line(struct connection *conn,
+ const char *line)
+{
+ const char *const *args = t_strsplit_tabescaped(line);
+ return dict_connection_handshake_args(conn, args);
+}
+
+static int dict_connection_dict_init(struct dict_connection *conn)
+{
+ struct dict_settings dict_set;
+ const char *const *strlist;
+ unsigned int i, count;
+ const char *uri, *error;
+
+ if (!array_is_created(&dict_settings->dicts)) {
+ e_error(conn->conn.event, "No dictionaries configured");
+ return -1;
+ }
+ strlist = array_get(&dict_settings->dicts, &count);
+ for (i = 0; i < count; i += 2) {
+ if (strcmp(strlist[i], conn->name) == 0)
+ break;
+ }
+
+ if (i == count) {
+ e_error(conn->conn.event, "Unconfigured dictionary name '%s'",
+ conn->name);
+ return -1;
+ }
+ event_set_append_log_prefix(conn->conn.event,
+ t_strdup_printf("%s: ", conn->name));
+ event_add_str(conn->conn.event, "dict_name", conn->name);
+ uri = strlist[i+1];
+
+ i_zero(&dict_set);
+ dict_set.base_dir = dict_settings->base_dir;
+ dict_set.event_parent = conn->conn.event;
+ if (dict_init_cache_get(conn->name, uri, &dict_set, &conn->dict, &error) < 0) {
+ /* dictionary initialization failed */
+ e_error(conn->conn.event, "Failed to initialize dictionary '%s': %s",
+ conn->name, error);
+ return -1;
+ }
+ return 0;
+}
+
+static int dict_connection_output(struct connection *_conn)
+{
+ struct dict_connection *conn = container_of(_conn, struct dict_connection, conn);
+ int ret;
+
+ if ((ret = o_stream_flush(conn->conn.output)) < 0) {
+ dict_connection_destroy(&conn->conn);
+ return 1;
+ }
+ if (ret > 0)
+ dict_connection_cmds_output_more(conn);
+ return ret;
+}
+
+struct dict_connection *
+dict_connection_create(struct master_service_connection *master_conn)
+{
+ struct dict_connection *conn;
+
+ conn = i_new(struct dict_connection, 1);
+ conn->refcount = 1;
+
+ connection_init_server(dict_connections, &conn->conn, master_conn->name,
+ master_conn->fd, master_conn->fd);
+ event_add_category(conn->conn.event, &dict_server_event_category);
+
+ o_stream_set_flush_callback(conn->conn.output, dict_connection_output,
+ &conn->conn);
+
+ i_array_init(&conn->cmds, DICT_CONN_MAX_PENDING_COMMANDS);
+
+ return conn;
+}
+
+void dict_connection_ref(struct dict_connection *conn)
+{
+ i_assert(conn->refcount > 0);
+ conn->refcount++;
+}
+
+bool dict_connection_unref(struct dict_connection *conn)
+{
+ struct dict_connection_transaction *transaction;
+
+ i_assert(conn->refcount > 0);
+ if (--conn->refcount > 0)
+ return TRUE;
+
+ i_assert(array_count(&conn->cmds) == 0);
+
+ /* we should have only transactions that haven't been committed or
+ rollbacked yet. close those before dict is deinitialized. */
+ if (array_is_created(&conn->transactions)) {
+ array_foreach_modifiable(&conn->transactions, transaction)
+ dict_transaction_rollback(&transaction->ctx);
+ }
+
+ if (conn->dict != NULL)
+ dict_init_cache_unref(&conn->dict);
+
+ if (array_is_created(&conn->transactions))
+ array_free(&conn->transactions);
+
+ array_free(&conn->cmds);
+
+ connection_deinit(&conn->conn);
+
+ i_free(conn->name);
+ i_free(conn);
+
+ master_service_client_connection_destroyed(master_service);
+ return FALSE;
+}
+
+static int dict_connection_input_line(struct connection *_conn, const char *line)
+{
+ struct dict_connection *conn =
+ container_of(_conn, struct dict_connection, conn);
+
+ i_assert(conn->dict != NULL);
+
+ if (dict_command_input(conn, line) < 0)
+ return -1;
+
+ if (array_count(&conn->cmds) >= DICT_CONN_MAX_PENDING_COMMANDS) {
+ connection_input_halt(_conn);
+ return 0;
+ }
+
+ return 1;
+}
+
+static void dict_connection_unref_safe_callback(struct dict_connection *conn)
+{
+ timeout_remove(&conn->to_unref);
+ (void)dict_connection_unref(conn);
+}
+
+void dict_connection_unref_safe(struct dict_connection *conn)
+{
+ if (conn->refcount == 1) {
+ /* delayed unref to make sure we don't try to call
+ dict_deinit() from a dict-callback. that's too much trouble
+ for each dict driver to be able to handle. */
+ if (conn->to_unref == NULL) {
+ conn->to_unref = timeout_add_short(0,
+ dict_connection_unref_safe_callback, conn);
+ }
+ } else {
+ (void)dict_connection_unref(conn);
+ }
+}
+
+static void dict_connection_destroy(struct connection *_conn)
+{
+ struct dict_connection *conn = container_of(_conn, struct dict_connection, conn);
+
+ /* If there are commands still running, we delay disconnecting can may
+ come back here. Track this so we unreference the connection only
+ once. */
+ if (conn->destroyed)
+ return;
+ conn->destroyed = TRUE;
+
+ /* the connection is closed, but there may still be commands left
+ running. finish them, even if the calling client can't be notified
+ about whether they succeeded (clients may not even care).
+
+ flush the command output here in case we were waiting on iteration
+ output. */
+ i_stream_close(conn->conn.input);
+ o_stream_close(conn->conn.output);
+ dict_connection_cmds_output_more(conn);
+
+ io_remove(&conn->conn.io);
+ dict_connection_unref(conn);
+}
+
+unsigned int dict_connections_current_count(void)
+{
+ return dict_connections->connections_count;
+}
+
+void dict_connections_destroy_all(void)
+{
+ connection_list_deinit(&dict_connections);
+}
+
+static struct connection_settings dict_connections_set = {
+ .dont_send_version = TRUE,
+ .input_max_size = DICT_CLIENT_MAX_LINE_LENGTH,
+ .output_max_size = 128*1024,
+};
+
+static struct connection_vfuncs dict_connections_vfuncs = {
+ .destroy = dict_connection_destroy,
+ .handshake_line = dict_connection_handshake_line,
+ .input_line = dict_connection_input_line,
+};
+
+void dict_connections_init(void)
+{
+ dict_connections = connection_list_init(&dict_connections_set,
+ &dict_connections_vfuncs);
+}
diff --git a/src/dict/dict-connection.h b/src/dict/dict-connection.h
new file mode 100644
index 0000000..2241dad
--- /dev/null
+++ b/src/dict/dict-connection.h
@@ -0,0 +1,48 @@
+#ifndef DICT_CONNECTION_H
+#define DICT_CONNECTION_H
+
+#include "dict.h"
+#include "connection.h"
+
+struct dict_connection_transaction {
+ unsigned int id;
+ struct dict_connection *conn;
+ struct dict_transaction_context *ctx;
+};
+
+struct dict_connection {
+ struct connection conn;
+ struct dict_connection *prev, *next;
+ struct dict_server *server;
+ int refcount;
+
+ char *name;
+ struct dict *dict;
+ enum dict_data_type value_type;
+
+ struct timeout *to_unref;
+
+ /* There are only a few transactions per client, so keeping them in
+ array is fast enough */
+ ARRAY(struct dict_connection_transaction) transactions;
+ ARRAY(struct dict_connection_cmd *) cmds;
+ unsigned int async_id_counter;
+
+ bool iter_flush_pending;
+ bool destroyed;
+};
+
+struct master_service_connection;
+
+struct dict_connection *
+dict_connection_create(struct master_service_connection *master_conn);
+
+void dict_connection_ref(struct dict_connection *conn);
+bool dict_connection_unref(struct dict_connection *conn);
+void dict_connection_unref_safe(struct dict_connection *conn);
+
+unsigned int dict_connections_current_count(void);
+void dict_connections_init(void);
+void dict_connections_destroy_all(void);
+
+#endif
diff --git a/src/dict/dict-init-cache.c b/src/dict/dict-init-cache.c
new file mode 100644
index 0000000..ed76940
--- /dev/null
+++ b/src/dict/dict-init-cache.c
@@ -0,0 +1,164 @@
+/* Copyright (c) 2021 Dovecot authors, see the included COPYING file */
+
+#include "lib.h"
+#include "ioloop.h"
+#include "dict.h"
+#include "dict-private.h"
+#include "dict-init-cache.h"
+#include "llist.h"
+
+/* How many seconds to keep dict opened for reuse after it's been closed */
+#define DICT_CACHE_TIMEOUT_SECS 30
+/* How many closed dicts to keep */
+#define DICT_CACHE_MAX_COUNT 10
+
+struct dict_init_cache_list {
+ struct dict_init_cache_list *prev, *next;
+
+ struct dict *dict;
+ char *dict_name;
+ int refcount;
+
+ time_t destroy_time;
+};
+
+static struct dict_init_cache_list *dicts = NULL;
+static struct timeout *to_dict = NULL;
+
+static struct dict_init_cache_list *
+dict_init_cache_add(const char *dict_name, struct dict *dict)
+{
+ struct dict_init_cache_list *list;
+
+ list = i_new(struct dict_init_cache_list, 1);
+ list->refcount = 1;
+ list->dict = dict;
+ list->dict_name = i_strdup(dict_name);
+
+ DLLIST_PREPEND(&dicts, list);
+
+ return list;
+}
+
+static void dict_init_cache_list_free(struct dict_init_cache_list *list)
+{
+ i_assert(list->refcount == 0);
+
+ DLLIST_REMOVE(&dicts, list);
+ dict_deinit(&list->dict);
+ i_free(list->dict_name);
+ i_free(list);
+}
+
+static struct dict_init_cache_list *dict_init_cache_find(const char *dict_name)
+{
+ struct dict_init_cache_list *listp = dicts, *next = NULL, *match = NULL;
+ unsigned int ref0_count = 0;
+
+ while (listp != NULL) {
+ next = listp->next;
+ if (match != NULL) {
+ /* already found the dict. we're just going through
+ the rest of them to drop 0 refcounts */
+ } else if (strcmp(dict_name, listp->dict_name) == 0)
+ match = listp;
+
+ if (listp->refcount == 0 && listp != match) {
+ if (listp->destroy_time <= ioloop_time ||
+ ref0_count >= DICT_CACHE_MAX_COUNT - 1)
+ dict_init_cache_list_free(listp);
+ else
+ ref0_count++;
+ }
+ listp = next;
+ }
+ return match;
+}
+
+int dict_init_cache_get(const char *dict_name, const char *uri,
+ const struct dict_settings *set,
+ struct dict **dict_r, const char **error_r)
+{
+ struct dict_init_cache_list *match;
+ int ret = 0;
+
+ match = dict_init_cache_find(dict_name);
+ if (match == NULL) {
+ if (dict_init(uri, set, dict_r, error_r) < 0)
+ return -1;
+ match = dict_init_cache_add(dict_name, *dict_r);
+ } else {
+ match->refcount++;
+ *dict_r = match->dict;
+ }
+ i_assert(match->dict != NULL);
+ return ret;
+}
+
+static void destroy_unrefed(void)
+{
+ struct dict_init_cache_list *listp, *next = NULL;
+ bool seen_ref0 = FALSE;
+
+ for (listp = dicts; listp != NULL; listp = next) {
+ next = listp->next;
+
+ i_assert(listp->refcount >= 0);
+ if (listp->refcount > 0)
+ ;
+ else if (listp->destroy_time <= ioloop_time)
+ dict_init_cache_list_free(listp);
+ else
+ seen_ref0 = TRUE;
+ }
+
+ if (!seen_ref0 && to_dict != NULL)
+ timeout_remove(&to_dict);
+}
+
+static void dict_removal_timeout(void *context ATTR_UNUSED)
+{
+ destroy_unrefed();
+}
+
+void dict_init_cache_unref(struct dict **_dict)
+{
+ struct dict *dict = *_dict;
+ struct dict_init_cache_list *listp;
+
+ if (dict == NULL)
+ return;
+
+ *_dict = NULL;
+ for (listp = dicts; listp != NULL; listp = listp->next) {
+ if (listp->dict == dict)
+ break;
+ }
+
+ i_assert(listp != NULL && listp->dict == dict);
+ i_assert(listp->refcount > 0);
+
+ listp->refcount--;
+ listp->destroy_time = ioloop_time + DICT_CACHE_TIMEOUT_SECS;
+
+ if (to_dict == NULL) {
+ to_dict = timeout_add_to(io_loop_get_root(),
+ DICT_CACHE_TIMEOUT_SECS*1000/2,
+ dict_removal_timeout, NULL);
+ }
+}
+
+void dict_init_cache_wait_all(void)
+{
+ struct dict_init_cache_list *listp;
+
+ for (listp = dicts; listp != NULL; listp = listp->next)
+ dict_wait(listp->dict);
+}
+
+void dict_init_cache_destroy_all(void)
+{
+ timeout_remove(&to_dict);
+ while (dicts != NULL)
+ dict_init_cache_list_free(dicts);
+}
diff --git a/src/dict/dict-init-cache.h b/src/dict/dict-init-cache.h
new file mode 100644
index 0000000..1342ca3
--- /dev/null
+++ b/src/dict/dict-init-cache.h
@@ -0,0 +1,12 @@
+#ifndef DICT_INIT_CACHE_H
+#define DICT_INIT_CACHE_H
+
+int dict_init_cache_get(const char *dict_name, const char *uri,
+ const struct dict_settings *set,
+ struct dict **dict_r, const char **error_r);
+void dict_init_cache_unref(struct dict **dict);
+
+void dict_init_cache_wait_all(void);
+void dict_init_cache_destroy_all(void);
+
+#endif
diff --git a/src/dict/dict-settings.c b/src/dict/dict-settings.c
new file mode 100644
index 0000000..23c33f6
--- /dev/null
+++ b/src/dict/dict-settings.c
@@ -0,0 +1,117 @@
+/* Copyright (c) 2009-2018 Dovecot authors, see the included COPYING file */
+
+#include "lib.h"
+#include "buffer.h"
+#include "settings-parser.h"
+#include "service-settings.h"
+#include "dict-settings.h"
+
+/* <settings checks> */
+static struct file_listener_settings dict_unix_listeners_array[] = {
+ { "dict", 0660, "", "$default_internal_group" }
+};
+static struct file_listener_settings *dict_unix_listeners[] = {
+ &dict_unix_listeners_array[0]
+};
+static buffer_t dict_unix_listeners_buf = {
+ { { dict_unix_listeners, sizeof(dict_unix_listeners) } }
+};
+
+static struct file_listener_settings dict_async_unix_listeners_array[] = {
+ { "dict-async", 0660, "", "$default_internal_group" }
+};
+static struct file_listener_settings *dict_async_unix_listeners[] = {
+ &dict_async_unix_listeners_array[0]
+};
+static buffer_t dict_async_unix_listeners_buf = {
+ { { dict_async_unix_listeners, sizeof(dict_async_unix_listeners) } }
+};
+/* </settings checks> */
+
+struct service_settings dict_service_settings = {
+ .name = "dict",
+ .protocol = "",
+ .type = "",
+ .executable = "dict",
+ .user = "$default_internal_user",
+ .group = "",
+ .privileged_group = "",
+ .extra_groups = "",
+ .chroot = "",
+
+ .drop_priv_before_exec = FALSE,
+
+ .process_min_avail = 0,
+ .process_limit = 0,
+ .client_limit = 1,
+ .service_count = 0,
+ .idle_kill = 0,
+ .vsz_limit = UOFF_T_MAX,
+
+ .unix_listeners = { { &dict_unix_listeners_buf,
+ sizeof(dict_unix_listeners[0]) } },
+ .fifo_listeners = ARRAY_INIT,
+ .inet_listeners = ARRAY_INIT
+};
+
+struct service_settings dict_async_service_settings = {
+ .name = "dict-async",
+ .protocol = "",
+ .type = "",
+ .executable = "dict",
+ .user = "$default_internal_user",
+ .group = "",
+ .privileged_group = "",
+ .extra_groups = "",
+ .chroot = "",
+
+ .drop_priv_before_exec = FALSE,
+
+ .process_min_avail = 0,
+ .process_limit = 0,
+ .client_limit = 0,
+ .service_count = 0,
+ .idle_kill = 0,
+ .vsz_limit = UOFF_T_MAX,
+
+ .unix_listeners = { { &dict_async_unix_listeners_buf,
+ sizeof(dict_async_unix_listeners[0]) } },
+ .fifo_listeners = ARRAY_INIT,
+ .inet_listeners = ARRAY_INIT
+};
+
+#undef DEF
+#define DEF(type, name) \
+ SETTING_DEFINE_STRUCT_##type(#name, name, struct dict_server_settings)
+
+static const struct setting_define dict_setting_defines[] = {
+ DEF(STR, base_dir),
+ DEF(BOOL, verbose_proctitle),
+
+ DEF(STR, dict_db_config),
+ { .type = SET_STRLIST, .key = "dict",
+ .offset = offsetof(struct dict_server_settings, dicts) },
+
+ SETTING_DEFINE_LIST_END
+};
+
+const struct dict_server_settings dict_default_settings = {
+ .base_dir = PKG_RUNDIR,
+ .verbose_proctitle = FALSE,
+
+ .dict_db_config = "",
+ .dicts = ARRAY_INIT
+};
+
+const struct setting_parser_info dict_setting_parser_info = {
+ .module_name = "dict",
+ .defines = dict_setting_defines,
+ .defaults = &dict_default_settings,
+
+ .type_offset = SIZE_MAX,
+ .struct_size = sizeof(struct dict_server_settings),
+
+ .parent_offset = SIZE_MAX
+};
+
+const struct dict_server_settings *dict_settings;
diff --git a/src/dict/dict-settings.h b/src/dict/dict-settings.h
new file mode 100644
index 0000000..3c37589
--- /dev/null
+++ b/src/dict/dict-settings.h
@@ -0,0 +1,15 @@
+#ifndef DICT_SETTINGS_H
+#define DICT_SETTINGS_H
+
+struct dict_server_settings {
+ const char *base_dir;
+ bool verbose_proctitle;
+
+ const char *dict_db_config;
+ ARRAY(const char *) dicts;
+};
+
+extern const struct setting_parser_info dict_setting_parser_info;
+extern const struct dict_server_settings *dict_settings;
+
+#endif
diff --git a/src/dict/main.c b/src/dict/main.c
new file mode 100644
index 0000000..14b1cea
--- /dev/null
+++ b/src/dict/main.c
@@ -0,0 +1,179 @@
+/* Copyright (c) 2005-2018 Dovecot authors, see the included COPYING file */
+
+#include "lib.h"
+#include "restrict-access.h"
+#include "ioloop.h"
+#include "randgen.h"
+#include "str.h"
+#include "stats-dist.h"
+#include "process-title.h"
+#include "env-util.h"
+#include "module-dir.h"
+#include "master-service.h"
+#include "master-service-settings.h"
+#include "sql-api.h"
+#include "dict.h"
+#include "dict-client.h"
+#include "dict-commands.h"
+#include "dict-connection.h"
+#include "dict-settings.h"
+#include "dict-init-cache.h"
+#include "main.h"
+
+#include <math.h>
+
+static struct module *modules;
+static struct timeout *to_proctitle;
+static bool proctitle_updated;
+static struct ioloop *main_ioloop;
+
+static void
+add_stats_string(string_t *str, struct stats_dist *stats, const char *name)
+{
+ uint64_t min, max, p95;
+ double avg;
+
+ min = stats_dist_get_min(stats);
+ avg = stats_dist_get_avg(stats);
+ p95 = stats_dist_get_95th(stats);
+ max = stats_dist_get_max(stats);
+
+ str_printfa(str, ", %u %s:%llu/%lld/%llu/%llu",
+ stats_dist_get_count(stats), name,
+ (unsigned long long)min/1000, llrint(avg/1000),
+ (unsigned long long)p95/1000,
+ (unsigned long long)max/1000);
+ stats_dist_reset(stats);
+}
+
+static void dict_proctitle_update(void *context ATTR_UNUSED)
+{
+ string_t *str = t_str_new(128);
+
+ if (!proctitle_updated)
+ timeout_remove(&to_proctitle);
+
+ str_printfa(str, "[%u clients", dict_connections_current_count());
+
+ add_stats_string(str, cmd_stats.lookups, "lookups");
+ add_stats_string(str, cmd_stats.iterations, "iters");
+ add_stats_string(str, cmd_stats.commits, "commits");
+ str_append_c(str, ']');
+
+ process_title_set(str_c(str));
+ proctitle_updated = FALSE;
+}
+
+void dict_proctitle_update_later(void)
+{
+ if (!dict_settings->verbose_proctitle)
+ return;
+
+ if (to_proctitle == NULL)
+ to_proctitle = timeout_add_to(main_ioloop, 1000, dict_proctitle_update, NULL);
+ proctitle_updated = TRUE;
+}
+
+static void dict_die(void)
+{
+ /* hope that other processes relying on us will die first. */
+}
+
+static void client_connected(struct master_service_connection *conn)
+{
+ master_service_client_connection_accept(conn);
+ (void)dict_connection_create(conn);
+}
+
+static void main_preinit(void)
+{
+ /* Load built-in SQL drivers (if any) */
+ sql_drivers_init();
+ sql_drivers_register_all();
+#ifdef HAVE_CDB
+ dict_driver_register(&dict_driver_cdb);
+#endif
+
+ restrict_access_by_env(RESTRICT_ACCESS_FLAG_ALLOW_ROOT, NULL);
+ restrict_access_allow_coredumps(TRUE);
+}
+
+static void main_init(void)
+{
+ struct module_dir_load_settings mod_set;
+ void **sets;
+
+ sets = master_service_settings_get_others(master_service);
+ dict_settings = sets[0];
+
+ if (*dict_settings->dict_db_config != '\0') {
+ /* for berkeley db library */
+ env_put("DB_CONFIG", dict_settings->dict_db_config);
+ }
+
+ i_zero(&mod_set);
+ mod_set.abi_version = DOVECOT_ABI_VERSION;
+ mod_set.require_init_funcs = TRUE;
+
+ modules = module_dir_load(DICT_MODULE_DIR, NULL, &mod_set);
+ module_dir_init(modules);
+
+ /* Register only after loading modules. They may contain SQL drivers,
+ which we'll need to register. */
+ dict_drivers_register_all();
+ dict_commands_init();
+ dict_connections_init();
+
+ if (dict_settings->verbose_proctitle)
+ dict_proctitle_update(NULL);
+}
+
+static void main_deinit(void)
+{
+ /* wait for all dict operations to finish */
+ dict_init_cache_wait_all();
+ /* connections should no longer have any extra refcounts */
+ dict_connections_destroy_all();
+ dict_init_cache_destroy_all();
+
+ dict_drivers_unregister_all();
+ dict_commands_deinit();
+
+ module_dir_unload(&modules);
+
+ sql_drivers_deinit();
+ timeout_remove(&to_proctitle);
+}
+
+int main(int argc, char *argv[])
+{
+ const enum master_service_flags service_flags = 0;
+ const struct setting_parser_info *set_roots[] = {
+ &dict_setting_parser_info,
+ NULL
+ };
+ const char *error;
+
+ master_service = master_service_init("dict", service_flags,
+ &argc, &argv, "");
+ if (master_getopt(master_service) > 0)
+ return FATAL_DEFAULT;
+
+ if (master_service_settings_read_simple(master_service, set_roots,
+ &error) < 0)
+ i_fatal("Error reading configuration: %s", error);
+
+ master_service_init_log_with_pid(master_service);
+ main_preinit();
+ master_service_set_die_callback(master_service, dict_die);
+
+ main_ioloop = current_ioloop;
+ main_init();
+ master_service_init_finish(master_service);
+ master_service_run(master_service, client_connected);
+
+ /* clean up cached dicts */
+ main_deinit();
+ master_service_deinit(&master_service);
+ return 0;
+}
diff --git a/src/dict/main.h b/src/dict/main.h
new file mode 100644
index 0000000..e505e13
--- /dev/null
+++ b/src/dict/main.h
@@ -0,0 +1,6 @@
+#ifndef MAIN_H
+#define MAIN_H
+
+void dict_proctitle_update_later(void);
+
+#endif