Mercurial > dovecot > core-2.2
view src/imap/main.c @ 10582:615eef3139c2 HEAD
Updated copyright notices to include year 2010.
author | Timo Sirainen <tss@iki.fi> |
---|---|
date | Mon, 25 Jan 2010 01:19:08 +0200 |
parents | 06bddee57586 |
children | fd5141e85076 |
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/* Copyright (c) 2002-2010 Dovecot authors, see the included COPYING file */ #include "imap-common.h" #include "ioloop.h" #include "istream.h" #include "ostream.h" #include "abspath.h" #include "str.h" #include "base64.h" #include "process-title.h" #include "restrict-access.h" #include "fd-close-on-exec.h" #include "master-interface.h" #include "master-service.h" #include "master-login.h" #include "mail-user.h" #include "mail-storage-service.h" #include "imap-commands.h" #include "imap-fetch.h" #include <stdio.h> #include <stdlib.h> #include <unistd.h> #define IS_STANDALONE() \ (getenv(MASTER_UID_ENV) == NULL) #define IMAP_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; void imap_refresh_proctitle(void) { #define IMAP_PROCTITLE_PREFERRED_LEN 80 struct client *client; struct client_command_context *cmd; string_t *title = t_str_new(128); if (!verbose_proctitle) return; str_append_c(title, '['); switch (imap_client_count) { case 0: str_append(title, "idling"); break; case 1: client = imap_clients; str_append(title, client->user->username); if (client->user->remote_ip != NULL) { str_append_c(title, ' '); str_append(title, net_ip2addr(client->user->remote_ip)); } for (cmd = client->command_queue; cmd != NULL; cmd = cmd->next) { if (cmd->name == NULL) continue; if (str_len(title) > IMAP_PROCTITLE_PREFERRED_LEN) break; str_append_c(title, ' '); str_append(title, cmd->name); } break; default: str_printfa(title, "%u connections", imap_client_count); break; } str_append_c(title, ']'); process_title_set(str_c(title)); } static void client_kill_idle(struct client *client) { if (client->output_lock != NULL) return; client_send_line(client, "* BYE Server shutting down."); client_destroy(client, "Server shutting down."); } static void imap_die(void) { struct client *client, *next; time_t last_io, now = time(NULL); time_t stop_timestamp = now - IMAP_DIE_IDLE_SECS; unsigned int stop_msecs; for (client = imap_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_input(struct client *client, const buffer_t *buf) { struct ostream *output; const char *tag; unsigned int data_pos; bool send_untagged_capability = FALSE; if (buf != NULL && buf->used > 0) { tag = t_strndup(buf->data, buf->used); switch (*tag) { case '0': tag++; break; case '1': send_untagged_capability = TRUE; tag++; break; } data_pos = strlen(tag) + 1; if (data_pos > buf->used && !i_stream_add_data(client->input, CONST_PTR_OFFSET(buf->data, data_pos), buf->used - data_pos)) i_panic("Couldn't add client input to stream"); } else { /* IMAPLOGINTAG environment is compatible with mailfront */ tag = getenv("IMAPLOGINTAG"); } output = client->output; o_stream_ref(output); o_stream_cork(output); if (tag == NULL) { client_send_line(client, t_strconcat( "* PREAUTH [CAPABILITY ", str_c(client->capability_string), "] " "Logged in as ", client->user->username, NULL)); } else if (send_untagged_capability) { /* client doesn't seem to understand tagged capabilities. send untagged instead and hope that it works. */ client_send_line(client, t_strconcat("* CAPABILITY ", str_c(client->capability_string), NULL)); client_send_line(client, t_strconcat(tag, " OK Logged in", NULL)); } else { client_send_line(client, t_strconcat( tag, " OK [CAPABILITY ", str_c(client->capability_string), "] Logged in", NULL)); } (void)client_handle_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_user *user; struct mail_user *mail_user; struct client *client; const struct imap_settings *set; if (mail_storage_service_lookup_next(storage_service, input, &user, &mail_user, error_r) <= 0) return -1; restrict_access_allow_coredumps(TRUE); set = mail_storage_service_user_get_set(user)[1]; if (set->verbose_proctitle) verbose_proctitle = TRUE; client = client_create(fd_in, fd_out, mail_user, user, set); T_BEGIN { client_add_input(client, input_buf); } T_END; return 0; } static void main_stdio_run(void) { struct mail_storage_service_input input; const char *value, *error, *input_base64; buffer_t *input_buf; memset(&input, 0, sizeof(input)); input.module = input.service = "imap"; input.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) { struct mail_storage_service_input input; const char *error; buffer_t input_buf; memset(&input, 0, sizeof(input)); input.module = input.service = "imap"; input.local_ip = client->auth_req.local_ip; input.remote_ip = client->auth_req.remote_ip; input.username = username; input.userdb_fields = extra_fields; buffer_create_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) { i_error("%s", error); (void)close(client->fd); master_service_client_connection_destroyed(master_service); } } static void client_connected(const struct master_service_connection *conn) { if (master_login == NULL) { /* running standalone, we shouldn't even get here */ (void)close(conn->fd); } else { master_login_add(master_login, conn->fd); } } int main(int argc, char *argv[]) { static const struct setting_parser_info *set_roots[] = { &imap_setting_parser_info, NULL }; enum master_service_flags service_flags = 0; enum mail_storage_service_flags storage_service_flags = 0; const char *postlogin_socket_path; if (IS_STANDALONE() && getuid() == 0 && net_getpeername(1, NULL, NULL) == 0) { printf("* BAD [ALERT] imap binary must not be started from " "inetd, use imap-login instead.\n"); return 1; } if (IS_STANDALONE()) { service_flags |= MASTER_SERVICE_FLAG_STANDALONE | MASTER_SERVICE_FLAG_STD_CLIENT; } else { service_flags |= MASTER_SERVICE_FLAG_KEEP_CONFIG_OPEN; storage_service_flags |= MAIL_STORAGE_SERVICE_FLAG_DISALLOW_ROOT; } master_service = master_service_init("imap", service_flags, &argc, &argv, NULL); if (master_getopt(master_service) > 0) return FATAL_DEFAULT; postlogin_socket_path = argv[1] == NULL ? NULL : t_abspath(argv[1]); master_service_init_finish(master_service); master_service_set_die_callback(master_service, imap_die); /* plugins may want to add commands, so this needs to be called early */ commands_init(); imap_fetch_handlers_init(); storage_service = mail_storage_service_init(master_service, set_roots, storage_service_flags); /* 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(); } T_END; } else { master_login = master_login_init(master_service, "auth-master", postlogin_socket_path, login_client_connected); 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); imap_fetch_handlers_deinit(); commands_deinit(); master_service_deinit(&master_service); return 0; }