1 /* $NetBSD: split_addr.c,v 1.1.1.1 2009/06/23 10:08:48 tron Exp $ */ 2 3 /*++ 4 /* NAME 5 /* split_addr 3 6 /* SUMMARY 7 /* recipient localpart address splitter 8 /* SYNOPSIS 9 /* #include <split_addr.h> 10 /* 11 /* char *split_addr(localpart, delimiter) 12 /* char *localpart; 13 /* int delimiter; 14 /* DESCRIPTION 15 /* split_addr() null-terminates \fIlocalpart\fR at the first 16 /* occurrence of the \fIdelimiter\fR character found, and 17 /* returns a pointer to the remainder. 18 /* 19 /* Reserved addresses are not split: postmaster, mailer-daemon, 20 /* double-bounce. Addresses that begin with owner-, or addresses 21 /* that end in -request are not split when the owner_request_special 22 /* parameter is set. 23 /* LICENSE 24 /* .ad 25 /* .fi 26 /* The Secure Mailer license must be distributed with this software. 27 /* AUTHOR(S) 28 /* Wietse Venema 29 /* IBM T.J. Watson Research 30 /* P.O. Box 704 31 /* Yorktown Heights, NY 10598, USA 32 /*--*/ 33 34 /* System library. */ 35 36 #include <sys_defs.h> 37 #include <string.h> 38 39 #ifdef STRCASECMP_IN_STRINGS_H 40 #include <strings.h> 41 #endif 42 43 /* Utility library. */ 44 45 #include <split_at.h> 46 47 /* Global library. */ 48 49 #include <mail_params.h> 50 #include <mail_addr.h> 51 #include <split_addr.h> 52 53 /* split_addr - split address with extreme prejudice */ 54 55 char *split_addr(char *localpart, int delimiter) 56 { 57 int len; 58 59 /* 60 * Don't split these, regardless of what the delimiter is. 61 */ 62 if (strcasecmp(localpart, MAIL_ADDR_POSTMASTER) == 0) 63 return (0); 64 if (strcasecmp(localpart, MAIL_ADDR_MAIL_DAEMON) == 0) 65 return (0); 66 if (strcasecmp(localpart, var_double_bounce_sender) == 0) 67 return (0); 68 69 /* 70 * Backwards compatibility: don't split owner-foo or foo-request. 71 */ 72 if (delimiter == '-' && var_ownreq_special != 0) { 73 if (strncasecmp(localpart, "owner-", 6) == 0) 74 return (0); 75 if ((len = strlen(localpart) - 8) > 0 76 && strcasecmp(localpart + len, "-request") == 0) 77 return (0); 78 } 79 80 /* 81 * Safe to split this address. Do not split the address if the result 82 * would have a null localpart. 83 */ 84 return (delimiter == *localpart ? 0 : split_at(localpart, delimiter)); 85 } 86