From 0441d265f2bb9da249c7abf333f0f771fadb4ab5 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 15 Apr 2024 19:36:47 +0200 Subject: Adding upstream version 1:2.3.21+dfsg1. Signed-off-by: Daniel Baumann --- src/dict/Makefile.am | 43 +++ src/dict/Makefile.in | 847 +++++++++++++++++++++++++++++++++++++++++++++ src/dict/dict-commands.c | 797 ++++++++++++++++++++++++++++++++++++++++++ src/dict/dict-commands.h | 21 ++ src/dict/dict-connection.c | 272 +++++++++++++++ src/dict/dict-connection.h | 48 +++ src/dict/dict-init-cache.c | 164 +++++++++ src/dict/dict-init-cache.h | 12 + src/dict/dict-settings.c | 117 +++++++ src/dict/dict-settings.h | 15 + src/dict/main.c | 179 ++++++++++ src/dict/main.h | 6 + 12 files changed, 2521 insertions(+) create mode 100644 src/dict/Makefile.am create mode 100644 src/dict/Makefile.in create mode 100644 src/dict/dict-commands.c create mode 100644 src/dict/dict-commands.h create mode 100644 src/dict/dict-connection.c create mode 100644 src/dict/dict-connection.h create mode 100644 src/dict/dict-init-cache.c create mode 100644 src/dict/dict-init-cache.h create mode 100644 src/dict/dict-settings.c create mode 100644 src/dict/dict-settings.h create mode 100644 src/dict/main.c create mode 100644 src/dict/main.h (limited to 'src/dict') 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 \ 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mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \ + uninstall-am uninstall-pkglibexecPROGRAMS + +.PRECIOUS: Makefile + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/src/dict/dict-commands.c b/src/dict/dict-commands.c new file mode 100644 index 0000000..da6acce --- /dev/null +++ b/src/dict/dict-commands.c @@ -0,0 +1,797 @@ +/* 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]; + + /* [] */ + 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 |= 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]; + + /* [] */ + 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; + + /* */ + 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; + + /* */ + 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; + + /* */ + 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; + + /* */ + 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 int +cmd_hide_log_values(struct dict_connection_cmd *cmd, const char *const *args) +{ + struct dict_connection_transaction *trans; + bool value; + + /* */ + if (str_array_length(args) != 2 ) { + e_error(cmd->event, "HIDE_LOG_VALUES: broken input"); + return -1; + } + if (strcasecmp(args[1], "yes") == 0 || strcasecmp(args[1], "y") == 0 || + strcmp(args[1], "1") == 0) + value = TRUE; + else if (strcasecmp(args[1], "no") == 0) + value = FALSE; + else { + e_error(cmd->event, "HIDE_LOG_VALUES: broken input"); + return -1; + } + + if (dict_connection_transaction_lookup_parse(cmd->conn, args[0], &trans) < 0) + return -1; + + dict_transaction_set_hide_log_values(trans->ctx, value); + 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 }, + { DICT_PROTOCOL_CMD_HIDE_LOG_VALUES, cmd_hide_log_values }, + + { 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 + +#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" + +/* */ +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, "", "$default_internal_group" } +}; +static struct file_listener_settings *dict_async_unix_listeners[] = { + &dict_async_unix_listeners_array[0] +}; +static buffer_t dict_async_unix_listeners_buf = { + { { dict_async_unix_listeners, sizeof(dict_async_unix_listeners) } } +}; +/* */ + +struct service_settings dict_service_settings = { + .name = "dict", + .protocol = "", + .type = "", + .executable = "dict", + .user = "$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 + +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 -- cgit v1.2.3