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184e8823 | 1 | /* $Cambridge: exim/src/src/routers/rf_expand_data.c,v 1.4 2007/01/08 10:50:20 ph10 Exp $ */ |
0756eb3c PH |
2 | |
3 | /************************************************* | |
4 | * Exim - an Internet mail transport agent * | |
5 | *************************************************/ | |
6 | ||
184e8823 | 7 | /* Copyright (c) University of Cambridge 1995 - 2007 */ |
0756eb3c PH |
8 | /* See the file NOTICE for conditions of use and distribution. */ |
9 | ||
10 | ||
11 | #include "../exim.h" | |
12 | #include "rf_functions.h" | |
13 | ||
14 | ||
15 | /************************************************* | |
16 | * Expand data string and handle errors * | |
17 | *************************************************/ | |
18 | ||
19 | /* This little function is used by a couple of routers for expanding things. It | |
20 | just saves repeating this code too many times. It does an expansion, and | |
21 | chooses a suitable return code on error. | |
22 | ||
23 | Arguments: | |
24 | addr the address that's being routed | |
25 | s the string to be expanded | |
26 | prc pointer to where to put the return code on failure | |
27 | ||
28 | Returns: the expanded string, or NULL (with prc set) on failure | |
29 | */ | |
30 | ||
31 | uschar * | |
32 | rf_expand_data(address_item *addr, uschar *s, int *prc) | |
33 | { | |
34 | uschar *yield = expand_string(s); | |
35 | if (yield != NULL) return yield; | |
36 | if (expand_string_forcedfail) | |
37 | { | |
38 | DEBUG(D_route) debug_printf("forced failure for expansion of \"%s\"\n", s); | |
39 | *prc = DECLINE; | |
40 | } | |
41 | else | |
42 | { | |
43 | addr->message = string_sprintf("failed to expand \"%s\": %s", s, | |
44 | expand_string_message); | |
45 | *prc = DEFER; | |
46 | } | |
47 | return NULL; | |
48 | } | |
49 | ||
50 | /* End of routers/rf_expand_data.c */ |