projects / exim.git / blame
| Commit | Line | Data |
|---|---|---|
| 184e8823 | 1 | /* $Cambridge: exim/src/src/lookups/lf_quote.c,v 1.4 2007/01/08 10:50:19 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 "lf_functions.h" | |
| 13 | ||
| 14 | ||
| 15 | /************************************************* | |
| 16 | * Add string to result, quoting if necessary * | |
| 17 | *************************************************/ | |
| 18 | ||
| 19 | /* This function is called by some lookups that create name=value result | |
| 20 | strings, to handle the quoting of the data. It adds "name=" to the result, | |
| 21 | followed by appropriately quoted data, followed by a single space. | |
| 22 | ||
| 23 | Arguments: | |
| 24 | name the field name | |
| 25 | value the data value | |
| 26 | vlength the data length | |
| 27 | result the result pointer | |
| 28 | asize points to the size variable | |
| 29 | aoffset points to the offset variable | |
| 30 | ||
| 31 | Returns: the result pointer (possibly updated) | |
| 32 | */ | |
| 33 | ||
| 34 | uschar * | |
| 35 | lf_quote(uschar *name, uschar *value, int vlength, uschar *result, int *asize, | |
| 36 | int *aoffset) | |
| 37 | { | |
| 38 | result = string_append(result, asize, aoffset, 2, name, US"="); | |
| 39 | ||
| 40 | /* NULL is handled as an empty string */ | |
| 41 | ||
| 42 | if (value == NULL) value = US""; | |
| 43 | ||
| 44 | /* Quote the value if it is empty, contains white space, or starts with a quote | |
| 45 | character. */ | |
| 46 | ||
| 47 | if (value[0] == 0 || Ustrpbrk(value, " \t\n\r") != NULL || value[0] == '\"') | |
| 48 | { | |
| 49 | int j; | |
| 50 | result = string_cat(result, asize, aoffset, US"\"", 1); | |
| 51 | for (j = 0; j < vlength; j++) | |
| 52 | { | |
| 53 | if (value[j] == '\"' || value[j] == '\\') | |
| 54 | result = string_cat(result, asize, aoffset, US"\\", 1); | |
| 55 | result = string_cat(result, asize, aoffset, US value+j, 1); | |
| 56 | } | |
| 57 | result = string_cat(result, asize, aoffset, US"\"", 1); | |
| 58 | } | |
| 59 | else | |
| 60 | { | |
| 61 | result = string_cat(result, asize, aoffset, US value, vlength); | |
| 62 | } | |
| 63 | ||
| 64 | return string_cat(result, asize, aoffset, US" ", 1); | |
| 65 | } | |
| 66 | ||
| 67 | /* End of lf_quote.c */ |