| 1 | /************************************************* |
| 2 | * Exim - an Internet mail transport agent * |
| 3 | *************************************************/ |
| 4 | |
| 5 | /* Copyright (c) University of Cambridge 1995 - 2009 */ |
| 6 | /* See the file NOTICE for conditions of use and distribution. */ |
| 7 | |
| 8 | |
| 9 | #include "../exim.h" |
| 10 | #include "rf_functions.h" |
| 11 | |
| 12 | |
| 13 | /************************************************* |
| 14 | * Expand data string and handle errors * |
| 15 | *************************************************/ |
| 16 | |
| 17 | /* This little function is used by a couple of routers for expanding things. It |
| 18 | just saves repeating this code too many times. It does an expansion, and |
| 19 | chooses a suitable return code on error. |
| 20 | |
| 21 | Arguments: |
| 22 | addr the address that's being routed |
| 23 | s the string to be expanded |
| 24 | prc pointer to where to put the return code on failure |
| 25 | |
| 26 | Returns: the expanded string, or NULL (with prc set) on failure |
| 27 | */ |
| 28 | |
| 29 | uschar * |
| 30 | rf_expand_data(address_item *addr, uschar *s, int *prc) |
| 31 | { |
| 32 | uschar *yield = expand_string(s); |
| 33 | if (yield != NULL) return yield; |
| 34 | if (f.expand_string_forcedfail) |
| 35 | { |
| 36 | DEBUG(D_route) debug_printf("forced failure for expansion of \"%s\"\n", s); |
| 37 | *prc = DECLINE; |
| 38 | } |
| 39 | else |
| 40 | { |
| 41 | addr->message = string_sprintf("failed to expand \"%s\": %s", s, |
| 42 | expand_string_message); |
| 43 | *prc = DEFER; |
| 44 | } |
| 45 | return NULL; |
| 46 | } |
| 47 | |
| 48 | /* End of routers/rf_expand_data.c */ |