1 /* $NetBSD: ehlo_mask.c,v 1.1.1.1 2009/06/23 10:08:46 tron Exp $ */ 2 3 /*++ 4 /* NAME 5 /* ehlo_mask 3 6 /* SUMMARY 7 /* map EHLO keywords to bit mask 8 /* SYNOPSIS 9 /* #include <ehlo_mask.h> 10 /* 11 /* #define EHLO_MASK_8BITMIME (1<<0) 12 /* #define EHLO_MASK_PIPELINING (1<<1) 13 /* #define EHLO_MASK_SIZE (1<<2) 14 /* #define EHLO_MASK_VRFY (1<<3) 15 /* #define EHLO_MASK_ETRN (1<<4) 16 /* #define EHLO_MASK_AUTH (1<<5) 17 /* #define EHLO_MASK_VERP (1<<6) 18 /* #define EHLO_MASK_STARTTLS (1<<7) 19 /* #define EHLO_MASK_XCLIENT (1<<8) 20 /* #define EHLO_MASK_XFORWARD (1<<9) 21 /* #define EHLO_MASK_ENHANCEDSTATUSCODES (1<<10) 22 /* #define EHLO_MASK_DSN (1<<11) 23 /* #define EHLO_MASK_SILENT (1<<15) 24 /* 25 /* int ehlo_mask(keyword_list) 26 /* const char *keyword_list; 27 /* 28 /* const char *str_ehlo_mask(bitmask) 29 /* int bitmask; 30 /* DESCRIPTION 31 /* ehlo_mask() computes the bit-wise OR of the masks that correspond 32 /* to the names listed in the \fIkeyword_list\fR argument, separated by 33 /* comma and/or whitespace characters. Undefined names are silently 34 /* ignored. 35 /* 36 /* str_ehlo_mask() translates a mask into its equivalent names. 37 /* The result is written to a static buffer that is overwritten 38 /* upon each call. Undefined bits cause a fatal run-time error. 39 /* DIAGNOSTICS 40 /* Fatal: str_ehlo_mask() found an undefined bit. 41 /* LICENSE 42 /* .ad 43 /* .fi 44 /* The Secure Mailer license must be distributed with this software. 45 /* AUTHOR(S) 46 /* Wietse Venema 47 /* IBM T.J. Watson Research 48 /* P.O. Box 704 49 /* Yorktown Heights, NY 10598, USA 50 /*--*/ 51 52 /* System library.*/ 53 54 #include <sys_defs.h> 55 56 /* Utility library. */ 57 58 #include <name_mask.h> 59 60 /* Global library. */ 61 62 #include <ehlo_mask.h> 63 64 /* 65 * The lookup table. 66 */ 67 static const NAME_MASK ehlo_mask_table[] = { 68 "8BITMIME", EHLO_MASK_8BITMIME, 69 "AUTH", EHLO_MASK_AUTH, 70 "ETRN", EHLO_MASK_ETRN, 71 "PIPELINING", EHLO_MASK_PIPELINING, 72 "SIZE", EHLO_MASK_SIZE, 73 "VERP", EHLO_MASK_VERP, 74 "VRFY", EHLO_MASK_VRFY, 75 "XCLIENT", EHLO_MASK_XCLIENT, 76 "XFORWARD", EHLO_MASK_XFORWARD, 77 "STARTTLS", EHLO_MASK_STARTTLS, 78 "ENHANCEDSTATUSCODES", EHLO_MASK_ENHANCEDSTATUSCODES, 79 "DSN", EHLO_MASK_DSN, 80 "SILENT-DISCARD", EHLO_MASK_SILENT, /* XXX In-band signaling */ 81 0, 82 }; 83 84 /* ehlo_mask - string to bit mask */ 85 86 int ehlo_mask(const char *mask_str) 87 { 88 89 /* 90 * We allow "STARTTLS" besides "starttls, because EHLO keywords are often 91 * spelled in uppercase. We ignore non-existent EHLO keywords so people 92 * can switch between Postfix versions without trouble. 93 */ 94 return (name_mask_opt("ehlo string mask", ehlo_mask_table, 95 mask_str, NAME_MASK_ANY_CASE)); 96 } 97 98 /* str_ehlo_mask - mask to string */ 99 100 const char *str_ehlo_mask(int mask_bits) 101 { 102 103 /* 104 * We don't allow non-existent bits. Doing so makes no sense at this 105 * time. 106 */ 107 return (str_name_mask("ehlo bitmask", ehlo_mask_table, mask_bits)); 108 } 109 110 #ifdef TEST 111 112 /* 113 * Stand-alone test program. 114 */ 115 #include <stdlib.h> 116 #include <vstream.h> 117 #include <vstring.h> 118 #include <vstring_vstream.h> 119 120 int main(int unused_argc, char **unused_argv) 121 { 122 int mask_bits; 123 VSTRING *buf = vstring_alloc(1); 124 const char *mask_string; 125 126 while (vstring_get_nonl(buf, VSTREAM_IN) != VSTREAM_EOF) { 127 mask_bits = ehlo_mask(vstring_str(buf)); 128 mask_string = str_ehlo_mask(mask_bits); 129 vstream_printf("%s -> 0x%x -> %s\n", vstring_str(buf), mask_bits, 130 mask_string); 131 vstream_fflush(VSTREAM_OUT); 132 } 133 vstring_free(buf); 134 exit(0); 135 } 136 137 #endif 138