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>

1 files changed, 400 insertions, 0 deletions

diff --git a/pigeonhole/src/managesieve/main.c b/pigeonhole/src/managesieve/main.c
new file mode 100644
index 0000000..340b7b6
--- /dev/null
+++ b/pigeonhole/src/managesieve/main.c
@@ -0,0 +1,400 @@
+/* Copyright (c) 2002-2018 Pigeonhole authors, see the included COPYING file
+ */
+
+#include "lib.h"
+#include "buffer.h"
+#include "ioloop.h"
+#include "istream.h"
+#include "istream-concat.h"
+#include "ostream.h"
+#include "path-util.h"
+#include "str.h"
+#include "base64.h"
+#include "process-title.h"
+#include "restrict-access.h"
+#include "settings-parser.h"
+#include "master-interface.h"
+#include "master-service.h"
+#include "master-login.h"
+#include "mail-user.h"
+#include "mail-storage-service.h"
+
+#include "managesieve-common.h"
+#include "managesieve-commands.h"
+#include "managesieve-capabilities.h"
+
+#include <stdio.h>
+#include <unistd.h>
+
+#define IS_STANDALONE() \
+        (getenv(MASTER_IS_PARENT_ENV) == NULL)
+
+#define MANAGESIEVE_DIE_IDLE_SECS 10
+
+static bool verbose_proctitle = FALSE;
+static struct mail_storage_service_ctx *storage_service;
+static struct master_login *master_login = NULL;
+
+void (*hook_client_created)(struct client **client) = NULL;
+
+struct event_category event_category_managesieve = {
+	.name = "managesieve",
+};
+
+void managesieve_refresh_proctitle(void)
+{
+#define MANAGESIEVE_PROCTITLE_PREFERRED_LEN 80
+	struct client *client;
+	string_t *title = t_str_new(128);
+
+	if (!verbose_proctitle)
+		return;
+
+	str_append_c(title, '[');
+	switch (managesieve_client_count) {
+	case 0:
+		str_append(title, "idling");
+		break;
+	case 1:
+		client = managesieve_clients;
+		str_append(title, client->user->username);
+		if (client->user->conn.remote_ip != NULL) {
+			str_append_c(title, ' ');
+			str_append(title,
+				   net_ip2addr(client->user->conn.remote_ip));
+		}
+
+		if (client->cmd.name != NULL &&
+		    str_len(title) <= MANAGESIEVE_PROCTITLE_PREFERRED_LEN) {
+			str_append_c(title, ' ');
+			str_append(title, client->cmd.name);
+		}
+		break;
+	default:
+		str_printfa(title, "%u connections", managesieve_client_count);
+		break;
+	}
+	str_append_c(title, ']');
+	process_title_set(str_c(title));
+}
+
+static void client_kill_idle(struct client *client)
+{
+	mail_storage_service_io_activate_user(client->service_user);
+	client_send_bye(client, "Server shutting down.");
+	client_destroy(client, "Server shutting down.");
+}
+
+static void managesieve_die(void)
+{
+	struct client *client, *next;
+	time_t last_io, now = time(NULL);
+	time_t stop_timestamp = now - MANAGESIEVE_DIE_IDLE_SECS;
+	unsigned int stop_msecs;
+
+	for (client = managesieve_clients; client != NULL; client = next) {
+		next = client->next;
+
+		last_io = I_MAX(client->last_input, client->last_output);
+		if (last_io <= stop_timestamp)
+			client_kill_idle(client);
+		else {
+			timeout_remove(&client->to_idle);
+			stop_msecs = (last_io - stop_timestamp) * 1000;
+			client->to_idle = timeout_add(stop_msecs,
+						      client_kill_idle, client);
+		}
+	}
+}
+
+static void client_add_istream_prefix(struct client *client,
+				      const buffer_t *input)
+{
+	struct istream *inputs[] = {
+		i_stream_create_copy_from_data(input->data, input->used),
+		client->input,
+		NULL
+	};
+	client->input = i_stream_create_concat(inputs);
+	i_stream_copy_fd(client->input, inputs[1]);
+	i_stream_unref(&inputs[0]);
+	i_stream_unref(&inputs[1]);
+
+	i_stream_set_input_pending(client->input, TRUE);
+}
+
+static void client_logged_in(struct client *client)
+{
+	struct ostream *output;
+
+	output = client->output;
+	o_stream_ref(output);
+	o_stream_cork(output);
+	if (!IS_STANDALONE())
+		client_send_ok(client, "Logged in.");
+	(void)client_input(client);
+	o_stream_uncork(output);
+	o_stream_unref(&output);
+}
+
+static int
+client_create_from_input(const struct mail_storage_service_input *input,
+			 int fd_in, int fd_out, const buffer_t *input_buf,
+			 const char **error_r)
+{
+	struct mail_storage_service_input service_input;
+	struct mail_storage_service_user *user;
+	struct mail_user *mail_user;
+	struct client *client;
+	struct managesieve_settings *set;
+	struct event *event;
+	const char *error;
+
+	event = event_create(NULL);
+	event_add_category(event, &event_category_managesieve);
+	event_add_fields(event, (const struct event_add_field []){
+		{ .key = "user", .value = input->username },
+		{ .key = "session", .value = input->session_id },
+		{ .key = NULL }
+	});
+
+	service_input = *input;
+	service_input.event_parent = event;
+	if (mail_storage_service_lookup_next(storage_service, &service_input,
+					     &user, &mail_user, error_r) <= 0) {
+		event_unref(&event);
+		return -1;
+	}
+	restrict_access_allow_coredumps(TRUE);
+
+	set = mail_storage_service_user_get_set(user)[1];
+	if (set->verbose_proctitle)
+		verbose_proctitle = TRUE;
+
+	if (settings_var_expand(&managesieve_setting_parser_info, set,
+				mail_user->pool,
+				mail_user_var_expand_table(mail_user),
+				&error) <= 0) {
+		i_error("Failed to expand settings: %s", error);
+		mail_storage_service_user_unref(&user);
+		mail_user_unref(&mail_user);
+		event_unref(&event);
+		return -1;
+	}
+
+	client = client_create(fd_in, fd_out, input->session_id,
+			       event, mail_user, user, set);
+	if (input_buf != NULL && input_buf->used > 0)
+		client_add_istream_prefix(client, input_buf);
+	client_create_finish(client);
+	T_BEGIN {
+		client_logged_in(client);
+	} T_END;
+	event_unref(&event);
+	return 0;
+}
+
+static void main_stdio_run(const char *username)
+{
+	struct mail_storage_service_input input;
+	const char *value, *error, *input_base64;
+	buffer_t *input_buf;
+
+	i_zero(&input);
+	input.module = "managesieve";
+	input.service = "sieve";
+	input.username =  username != NULL ? username : getenv("USER");
+	if (input.username == NULL && IS_STANDALONE())
+		input.username = getlogin();
+	if (input.username == NULL)
+		i_fatal("USER environment missing");
+	if ((value = getenv("IP")) != NULL)
+		net_addr2ip(value, &input.remote_ip);
+	if ((value = getenv("LOCAL_IP")) != NULL)
+		net_addr2ip(value, &input.local_ip);
+
+	input_base64 = getenv("CLIENT_INPUT");
+	input_buf = (input_base64 == NULL ?
+		     NULL : t_base64_decode_str(input_base64));
+
+	if (client_create_from_input(&input, STDIN_FILENO, STDOUT_FILENO,
+				     input_buf, &error) < 0)
+		i_fatal("%s", error);
+}
+
+static void
+login_client_connected(const struct master_login_client *client,
+		       const char *username, const char *const *extra_fields)
+{
+#define MSG_BYE_INTERNAL_ERROR "BYE \""CRITICAL_MSG"\"\r\n"
+	struct mail_storage_service_input input;
+	enum mail_auth_request_flags flags = client->auth_req.flags;
+	const char *error;
+	buffer_t input_buf;
+
+	i_zero(&input);
+	input.module = "managesieve";
+	input.service = "sieve";
+	input.local_ip = client->auth_req.local_ip;
+	input.remote_ip = client->auth_req.remote_ip;
+	input.local_port = client->auth_req.local_port;
+	input.remote_port = client->auth_req.remote_port;
+	input.username = username;
+	input.userdb_fields = extra_fields;
+	input.session_id = client->session_id;
+	if ((flags & MAIL_AUTH_REQUEST_FLAG_CONN_SECURED) != 0)
+		input.conn_secured = TRUE;
+	if ((flags & MAIL_AUTH_REQUEST_FLAG_CONN_SSL_SECURED) != 0)
+		input.conn_ssl_secured = TRUE;
+
+	buffer_create_from_const_data(&input_buf, client->data,
+				      client->auth_req.data_size);
+	if (client_create_from_input(&input, client->fd, client->fd,
+				     &input_buf, &error) < 0) {
+		int fd = client->fd;
+
+		if (write(fd, MSG_BYE_INTERNAL_ERROR,
+			  strlen(MSG_BYE_INTERNAL_ERROR)) < 0) {
+			if (errno != EAGAIN && errno != EPIPE)
+				i_error("write(client) failed: %m");
+		}
+		i_error("%s", error);
+		i_close_fd(&fd);
+		master_service_client_connection_destroyed(master_service);
+	}
+}
+
+static void
+login_client_failed(const struct master_login_client *client,
+		    const char *errormsg)
+{
+	const char *msg;
+
+	msg = t_strdup_printf("NO \"%s\"\r\n", errormsg);
+	if (write(client->fd, msg, strlen(msg)) < 0) {
+		/* ignored */
+	}
+}
+
+static void client_connected(struct master_service_connection *conn)
+{
+	/* when running standalone, we shouldn't even get here */
+	i_assert(master_login != NULL);
+
+	master_service_client_connection_accept(conn);
+	master_login_add(master_login, conn->fd);
+}
+
+int main(int argc, char *argv[])
+{
+	static const struct setting_parser_info *set_roots[] = {
+		&managesieve_setting_parser_info,
+		NULL
+	};
+	struct master_login_settings login_set;
+	enum master_service_flags service_flags = 0;
+	enum mail_storage_service_flags storage_service_flags = 0;
+	const char *username = NULL, *error = NULL;
+	int c;
+
+	i_zero(&login_set);
+	login_set.postlogin_timeout_secs = MASTER_POSTLOGIN_TIMEOUT_DEFAULT;
+
+	if (IS_STANDALONE() && getuid() == 0 &&
+	    net_getpeername(1, NULL, NULL) == 0) {
+		printf("NO \"managesieve binary must not be started from "
+		       "inetd, use managesieve-login instead.\"\n");
+		return 1;
+	}
+
+	if (IS_STANDALONE() || getenv("DUMP_CAPABILITY") != NULL) {
+		service_flags |= MASTER_SERVICE_FLAG_STANDALONE |
+				 MASTER_SERVICE_FLAG_STD_CLIENT;
+	} else {
+		service_flags |= MASTER_SERVICE_FLAG_KEEP_CONFIG_OPEN;
+	}
+	if (getenv("DUMP_CAPABILITY") != NULL) {
+		service_flags |= MASTER_SERVICE_FLAG_DONT_SEND_STATS |
+			MASTER_SERVICE_FLAG_DISABLE_SSL_SET;
+	}
+
+	master_service = master_service_init("managesieve", service_flags,
+					     &argc, &argv, "t:u:");
+	while ((c = master_getopt(master_service)) > 0) {
+		switch (c) {
+		case 't':
+			if (str_to_uint(optarg,
+					&login_set.postlogin_timeout_secs) < 0 ||
+			    login_set.postlogin_timeout_secs == 0)
+				i_fatal("Invalid -t parameter: %s", optarg);
+			break;
+		case 'u':
+			storage_service_flags |=
+				MAIL_STORAGE_SERVICE_FLAG_USERDB_LOOKUP;
+			username = optarg;
+			break;
+		default:
+			return FATAL_DEFAULT;
+		}
+	}
+
+	master_service_set_die_callback(master_service, managesieve_die);
+
+	/* plugins may want to add commands, so this needs to be called early */
+	commands_init();
+
+	/* Dump capabilities if requested */
+	if (getenv("DUMP_CAPABILITY") != NULL) {
+		managesieve_capabilities_dump();
+		commands_deinit();
+		master_service_deinit(&master_service);
+		exit(0);
+	}
+
+	if (t_abspath("auth-master", &login_set.auth_socket_path, &error) < 0)
+		i_fatal("t_abspath(%s) failed: %s", "auth-master", error);
+
+	if (argv[optind] != NULL &&
+	    t_abspath(argv[optind], &login_set.postlogin_socket_path,
+		      &error) < 0) {
+		i_fatal("t_abspath(%s) failed: %s", argv[optind], error);
+	}
+
+	login_set.callback = login_client_connected;
+	login_set.failure_callback = login_client_failed;
+
+	if (!IS_STANDALONE())
+		master_login = master_login_init(master_service, &login_set);
+
+	storage_service =
+		mail_storage_service_init(master_service,
+					  set_roots, storage_service_flags);
+	master_service_init_finish(master_service);
+	/* NOTE: login_set.*_socket_path are now invalid due to data stack
+	   having been freed */
+
+	/* fake that we're running, so we know if client was destroyed
+		while handling its initial input */
+	io_loop_set_running(current_ioloop);
+
+	if (IS_STANDALONE()) {
+		T_BEGIN {
+			main_stdio_run(username);
+		} T_END;
+	} else {
+		io_loop_set_running(current_ioloop);
+	}
+
+	if (io_loop_is_running(current_ioloop))
+		master_service_run(master_service, client_connected);
+	clients_destroy_all();
+
+	if (master_login != NULL)
+		master_login_deinit(&master_login);
+	mail_storage_service_deinit(&storage_service);
+
+	commands_deinit();
+
+	master_service_deinit(&master_service);
+	return 0;
+}