1 /*++ 2 /* NAME 3 /* mail_server 3h 4 /* SUMMARY 5 /* skeleton servers 6 /* SYNOPSIS 7 /* #include <mail_server.h> 8 /* DESCRIPTION 9 /* .nf 10 11 /* 12 * Utility library. 13 */ 14 #include <vstream.h> 15 #include <htable.h> 16 17 /* 18 * Global library. 19 */ 20 #include <mail_conf.h> 21 22 /* 23 * External interface. Tables are defined in mail_conf.h. 24 */ 25 #define MAIL_SERVER_INT_TABLE 1 26 #define MAIL_SERVER_STR_TABLE 2 27 #define MAIL_SERVER_BOOL_TABLE 3 28 #define MAIL_SERVER_TIME_TABLE 4 29 #define MAIL_SERVER_RAW_TABLE 5 30 #define MAIL_SERVER_NINT_TABLE 6 31 #define MAIL_SERVER_NBOOL_TABLE 7 32 #define MAIL_SERVER_LONG_TABLE 8 33 34 #define MAIL_SERVER_PRE_INIT 10 35 #define MAIL_SERVER_POST_INIT 11 36 #define MAIL_SERVER_LOOP 12 37 #define MAIL_SERVER_EXIT 13 38 #define MAIL_SERVER_PRE_ACCEPT 14 39 #define MAIL_SERVER_SOLITARY 15 40 #define MAIL_SERVER_UNLIMITED 16 41 #define MAIL_SERVER_PRE_DISCONN 17 42 #define MAIL_SERVER_PRIVILEGED 18 43 #define MAIL_SERVER_WATCHDOG 19 44 45 #define MAIL_SERVER_IN_FLOW_DELAY 20 46 #define MAIL_SERVER_SLOW_EXIT 21 47 #define MAIL_SERVER_BOUNCE_INIT 22 48 #define MAIL_SERVER_RETIRE_ME 23 49 #define MAIL_SERVER_POST_ACCEPT 24 50 51 typedef void (*MAIL_SERVER_INIT_FN) (char *, char **); 52 typedef int (*MAIL_SERVER_LOOP_FN) (char *, char **); 53 typedef void (*MAIL_SERVER_EXIT_FN) (char *, char **); 54 typedef void (*MAIL_SERVER_ACCEPT_FN) (char *, char **); 55 typedef void (*MAIL_SERVER_POST_ACCEPT_FN) (VSTREAM *, char *, char **, HTABLE *); 56 typedef void (*MAIL_SERVER_DISCONN_FN) (VSTREAM *, char *, char **); 57 typedef void (*MAIL_SERVER_SLOW_EXIT_FN) (char *, char **); 58 59 /* Type-checked API for external use. */ 60 #define CA_MAIL_SERVER_INT_TABLE(v) MAIL_SERVER_INT_TABLE, CHECK_CPTR(MAIL_SERVER, CONFIG_INT_TABLE, (v)) 61 #define CA_MAIL_SERVER_STR_TABLE(v) MAIL_SERVER_STR_TABLE, CHECK_CPTR(MAIL_SERVER, CONFIG_STR_TABLE, (v)) 62 #define CA_MAIL_SERVER_BOOL_TABLE(v) MAIL_SERVER_BOOL_TABLE, CHECK_CPTR(MAIL_SERVER, CONFIG_BOOL_TABLE, (v)) 63 #define CA_MAIL_SERVER_TIME_TABLE(v) MAIL_SERVER_TIME_TABLE, CHECK_CPTR(MAIL_SERVER, CONFIG_TIME_TABLE, (v)) 64 #define CA_MAIL_SERVER_RAW_TABLE(v) MAIL_SERVER_RAW_TABLE, CHECK_CPTR(MAIL_SERVER, CONFIG_RAW_TABLE, (v)) 65 #define CA_MAIL_SERVER_NINT_TABLE(v) MAIL_SERVER_NINT_TABLE, CHECK_CPTR(MAIL_SERVER, CONFIG_NINT_TABLE, (v)) 66 #define CA_MAIL_SERVER_NBOOL_TABLE(v) MAIL_SERVER_NBOOL_TABLE, CHECK_CPTR(MAIL_SERVER, CONFIG_NBOOL_TABLE, (v)) 67 #define CA_MAIL_SERVER_LONG_TABLE(v) MAIL_SERVER_LONG_TABLE, CHECK_CPTR(MAIL_SERVER, CONFIG_LONG_TABLE, (v)) 68 #define CA_MAIL_SERVER_PRE_INIT(v) MAIL_SERVER_PRE_INIT, CHECK_VAL(MAIL_SERVER, MAIL_SERVER_INIT_FN, (v)) 69 #define CA_MAIL_SERVER_POST_INIT(v) MAIL_SERVER_POST_INIT, CHECK_VAL(MAIL_SERVER, MAIL_SERVER_INIT_FN, (v)) 70 #define CA_MAIL_SERVER_LOOP(v) MAIL_SERVER_LOOP, CHECK_VAL(MAIL_SERVER, MAIL_SERVER_LOOP_FN, (v)) 71 #define CA_MAIL_SERVER_EXIT(v) MAIL_SERVER_EXIT, CHECK_VAL(MAIL_SERVER, MAIL_SERVER_EXIT_FN, (v)) 72 #define CA_MAIL_SERVER_PRE_ACCEPT(v) MAIL_SERVER_PRE_ACCEPT, CHECK_VAL(MAIL_SERVER, MAIL_SERVER_ACCEPT_FN, (v)) 73 #define CA_MAIL_SERVER_POST_ACCEPT(v) MAIL_SERVER_POST_ACCEPT, CHECK_VAL(MAIL_SERVER, MAIL_SERVER_POST_ACCEPT_FN, (v)) 74 #define CA_MAIL_SERVER_SOLITARY MAIL_SERVER_SOLITARY 75 #define CA_MAIL_SERVER_UNLIMITED MAIL_SERVER_UNLIMITED 76 #define CA_MAIL_SERVER_PRE_DISCONN(v) MAIL_SERVER_PRE_DISCONN, CHECK_VAL(MAIL_SERVER, MAIL_SERVER_DISCONN_FN, (v)) 77 #define CA_MAIL_SERVER_PRIVILEGED MAIL_SERVER_PRIVILEGED 78 #define CA_MAIL_SERVER_WATCHDOG(v) MAIL_SERVER_WATCHDOG, CHECK_PTR(MAIL_SERVER, int, (v)) 79 #define CA_MAIL_SERVER_IN_FLOW_DELAY MAIL_SERVER_IN_FLOW_DELAY 80 #define CA_MAIL_SERVER_SLOW_EXIT(v) MAIL_SERVER_SLOW_EXIT, CHECK_VAL(MAIL_SERVER, MAIL_SERVER_SLOW_EXIT_FN, (v)) 81 #define CA_MAIL_SERVER_BOUNCE_INIT(v, w) MAIL_SERVER_BOUNCE_INIT, CHECK_PTR(MAIL_SERVER, char, (v)), CHECK_PPTR(MAIL_SERVER, char, (w)) 82 #define CA_MAIL_SERVER_RETIRE_ME MAIL_SERVER_RETIRE_ME 83 84 CHECK_VAL_HELPER_DCL(MAIL_SERVER, MAIL_SERVER_SLOW_EXIT_FN); 85 CHECK_VAL_HELPER_DCL(MAIL_SERVER, MAIL_SERVER_LOOP_FN); 86 CHECK_VAL_HELPER_DCL(MAIL_SERVER, MAIL_SERVER_INIT_FN); 87 CHECK_VAL_HELPER_DCL(MAIL_SERVER, MAIL_SERVER_EXIT_FN); 88 CHECK_VAL_HELPER_DCL(MAIL_SERVER, MAIL_SERVER_DISCONN_FN); 89 CHECK_VAL_HELPER_DCL(MAIL_SERVER, MAIL_SERVER_ACCEPT_FN); 90 CHECK_VAL_HELPER_DCL(MAIL_SERVER, MAIL_SERVER_POST_ACCEPT_FN); 91 CHECK_PTR_HELPER_DCL(MAIL_SERVER, int); 92 CHECK_PTR_HELPER_DCL(MAIL_SERVER, char); 93 CHECK_PPTR_HELPER_DCL(MAIL_SERVER, char); 94 CHECK_CPTR_HELPER_DCL(MAIL_SERVER, CONFIG_TIME_TABLE); 95 CHECK_CPTR_HELPER_DCL(MAIL_SERVER, CONFIG_STR_TABLE); 96 CHECK_CPTR_HELPER_DCL(MAIL_SERVER, CONFIG_RAW_TABLE); 97 CHECK_CPTR_HELPER_DCL(MAIL_SERVER, CONFIG_NINT_TABLE); 98 CHECK_CPTR_HELPER_DCL(MAIL_SERVER, CONFIG_NBOOL_TABLE); 99 CHECK_CPTR_HELPER_DCL(MAIL_SERVER, CONFIG_LONG_TABLE); 100 CHECK_CPTR_HELPER_DCL(MAIL_SERVER, CONFIG_INT_TABLE); 101 CHECK_CPTR_HELPER_DCL(MAIL_SERVER, CONFIG_BOOL_TABLE); 102 103 /* 104 * single_server.c 105 */ 106 typedef void (*SINGLE_SERVER_FN) (VSTREAM *, char *, char **); 107 extern NORETURN single_server_main(int, char **, SINGLE_SERVER_FN,...); 108 109 /* 110 * multi_server.c 111 */ 112 typedef void (*MULTI_SERVER_FN) (VSTREAM *, char *, char **); 113 extern NORETURN multi_server_main(int, char **, MULTI_SERVER_FN,...); 114 extern void multi_server_disconnect(VSTREAM *); 115 extern int multi_server_drain(void); 116 117 /* 118 * event_server.c 119 */ 120 typedef void (*EVENT_SERVER_FN) (VSTREAM *, char *, char **); 121 extern NORETURN event_server_main(int, char **, EVENT_SERVER_FN,...); 122 extern void event_server_disconnect(VSTREAM *); 123 extern int event_server_drain(void); 124 125 /* 126 * trigger_server.c 127 */ 128 typedef void (*TRIGGER_SERVER_FN) (char *, ssize_t, char *, char **); 129 extern NORETURN trigger_server_main(int, char **, TRIGGER_SERVER_FN,...); 130 131 #define TRIGGER_BUF_SIZE 1024 132 133 /* 134 * dgram_server.c 135 */ 136 typedef void (*DGRAM_SERVER_FN) (char *, ssize_t, char *, char **); 137 extern NORETURN dgram_server_main(int, char **, DGRAM_SERVER_FN,...); 138 139 #define DGRAM_BUF_SIZE 4096 140 141 /* LICENSE 142 /* .ad 143 /* .fi 144 /* The Secure Mailer license must be distributed with this software. 145 /* AUTHOR(S) 146 /* Wietse Venema 147 /* IBM T.J. Watson Research 148 /* P.O. Box 704 149 /* Yorktown Heights, NY 10598, USA 150 /* 151 /* Wietse Venema 152 /* Google, Inc. 153 /* 111 8th Avenue 154 /* New York, NY 10011, USA 155 /*--*/ 156