1 /* $OpenBSD: esc.c,v 1.6 2021/06/14 17:58:15 eric Exp $ */ 2 3 /* 4 * Copyright (c) 2014 Gilles Chehade <gilles@poolp.org> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <sys/tree.h> 20 21 #include <limits.h> 22 #include <stdio.h> 23 24 #include "smtpd-defines.h" 25 #include "smtpd-api.h" 26 27 static struct escode { 28 enum enhanced_status_code code; 29 const char *description; 30 } esc[] = { 31 /* 0.0 */ 32 { ESC_OTHER_STATUS, "Other/Undefined" }, 33 34 /* 1.x */ 35 { ESC_OTHER_ADDRESS_STATUS, "Other/Undefined address status" }, 36 { ESC_BAD_DESTINATION_MAILBOX_ADDRESS, "Bad destination mailbox address" }, 37 { ESC_BAD_DESTINATION_SYSTEM_ADDRESS, "Bad destination system address" }, 38 { ESC_BAD_DESTINATION_MAILBOX_ADDRESS_SYNTAX, "Bad destination mailbox address syntax" }, 39 { ESC_DESTINATION_MAILBOX_ADDRESS_AMBIGUOUS, "Destination mailbox address ambiguous" }, 40 { ESC_DESTINATION_ADDRESS_VALID, "Destination address valid" }, 41 { ESC_DESTINATION_MAILBOX_HAS_MOVED, "Destination mailbox has moved, No forwarding address" }, 42 { ESC_BAD_SENDER_MAILBOX_ADDRESS_SYNTAX, "Bad sender's mailbox address syntax" }, 43 { ESC_BAD_SENDER_SYSTEM_ADDRESS, "Bad sender's system address syntax" }, 44 45 /* 2.x */ 46 { ESC_OTHER_MAILBOX_STATUS, "Other/Undefined mailbox status" }, 47 { ESC_MAILBOX_DISABLED, "Mailbox disabled, not accepting messages" }, 48 { ESC_MAILBOX_FULL, "Mailbox full" }, 49 { ESC_MESSAGE_LENGTH_TOO_LARGE, "Message length exceeds administrative limit" }, 50 { ESC_MAILING_LIST_EXPANSION_PROBLEM, "Mailing list expansion problem" }, 51 52 /* 3.x */ 53 { ESC_OTHER_MAIL_SYSTEM_STATUS, "Other/Undefined mail system status" }, 54 { ESC_MAIL_SYSTEM_FULL, "Mail system full" }, 55 { ESC_SYSTEM_NOT_ACCEPTING_MESSAGES, "System not accepting network messages" }, 56 { ESC_SYSTEM_NOT_CAPABLE_OF_SELECTED_FEATURES, "System not capable of selected features" }, 57 { ESC_MESSAGE_TOO_BIG_FOR_SYSTEM, "Message too big for system" }, 58 { ESC_SYSTEM_INCORRECTLY_CONFIGURED, "System incorrectly configured" }, 59 60 /* 4.x */ 61 { ESC_OTHER_NETWORK_ROUTING_STATUS, "Other/Undefined network or routing status" }, 62 { ESC_NO_ANSWER_FROM_HOST, "No answer from host" }, 63 { ESC_BAD_CONNECTION, "Bad connection" }, 64 { ESC_DIRECTORY_SERVER_FAILURE, "Directory server failure" }, 65 { ESC_UNABLE_TO_ROUTE, "Unable to route" }, 66 { ESC_MAIL_SYSTEM_CONGESTION, "Mail system congestion" }, 67 { ESC_ROUTING_LOOP_DETECTED, "Routing loop detected" }, 68 { ESC_DELIVERY_TIME_EXPIRED, "Delivery time expired" }, 69 70 /* 5.x */ 71 { ESC_INVALID_RECIPIENT, "Invalid recipient" }, 72 { ESC_INVALID_COMMAND, "Invalid command" }, 73 { ESC_SYNTAX_ERROR, "Syntax error" }, 74 { ESC_TOO_MANY_RECIPIENTS, "Too many recipients" }, 75 { ESC_INVALID_COMMAND_ARGUMENTS, "Invalid command arguments" }, 76 { ESC_WRONG_PROTOCOL_VERSION, "Wrong protocol version" }, 77 78 /* 6.x */ 79 { ESC_OTHER_MEDIA_ERROR, "Other/Undefined media error" }, 80 { ESC_MEDIA_NOT_SUPPORTED, "Media not supported" }, 81 { ESC_CONVERSION_REQUIRED_AND_PROHIBITED, "Conversion required and prohibited" }, 82 { ESC_CONVERSION_REQUIRED_BUT_NOT_SUPPORTED, "Conversion required but not supported" }, 83 { ESC_CONVERSION_WITH_LOSS_PERFORMED, "Conversion with loss performed" }, 84 { ESC_CONVERSION_FAILED, "Conversion failed" }, 85 86 /* 7.x */ 87 { ESC_OTHER_SECURITY_STATUS, "Other/Undefined security status" }, 88 { ESC_DELIVERY_NOT_AUTHORIZED_MESSAGE_REFUSED, "Delivery not authorized, message refused" }, 89 { ESC_MAILING_LIST_EXPANSION_PROHIBITED, "Mailing list expansion prohibited" }, 90 { ESC_SECURITY_CONVERSION_REQUIRED_NOT_POSSIBLE,"Security conversion required but not possible" }, 91 { ESC_SECURITY_FEATURES_NOT_SUPPORTED, "Security features not supported" }, 92 { ESC_CRYPTOGRAPHIC_FAILURE, "Cryptographic failure" }, 93 { ESC_CRYPTOGRAPHIC_ALGORITHM_NOT_SUPPORTED, "Cryptographic algorithm not supported" }, 94 { ESC_MESSAGE_TOO_BIG_FOR_SYSTEM, "Message integrity failure" }, 95 }; 96 97 const char * 98 esc_code(enum enhanced_status_class class, enum enhanced_status_code code) 99 { 100 static char buffer[6]; 101 102 (void)snprintf(buffer, sizeof buffer, "%d.%d.%d", class, code / 10, code % 10); 103 return buffer; 104 105 } 106 107 const char * 108 esc_description(enum enhanced_status_code code) 109 { 110 uint32_t i; 111 112 for (i = 0; i < nitems(esc); ++i) 113 if (code == esc[i].code) 114 return esc[i].description; 115 return "Other/Undefined"; 116 } 117