projects / exim.git / blame
| Commit | Line | Data |
|---|---|---|
| 0756eb3c PH |
1 | /************************************************* |
| 2 | * Exim - an Internet mail transport agent * | |
| 3 | *************************************************/ | |
| 4 | ||
| 0a49a7a4 | 5 | /* Copyright (c) University of Cambridge 1995 - 2009 */ |
| 0756eb3c PH |
6 | /* See the file NOTICE for conditions of use and distribution. */ |
| 7 | ||
| 8 | ||
| 9 | #include "../exim.h" | |
| 10 | #include "lf_functions.h" | |
| 11 | ||
| 12 | ||
| 13 | /************************************************* | |
| 14 | * Add string to result, quoting if necessary * | |
| 15 | *************************************************/ | |
| 16 | ||
| 17 | /* This function is called by some lookups that create name=value result | |
| 18 | strings, to handle the quoting of the data. It adds "name=" to the result, | |
| 19 | followed by appropriately quoted data, followed by a single space. | |
| 20 | ||
| 21 | Arguments: | |
| 22 | name the field name | |
| 23 | value the data value | |
| 24 | vlength the data length | |
| 25 | result the result pointer | |
| 26 | asize points to the size variable | |
| 27 | aoffset points to the offset variable | |
| 28 | ||
| 29 | Returns: the result pointer (possibly updated) | |
| 30 | */ | |
| 31 | ||
| 32 | uschar * | |
| 33 | lf_quote(uschar *name, uschar *value, int vlength, uschar *result, int *asize, | |
| 34 | int *aoffset) | |
| 35 | { | |
| 36 | result = string_append(result, asize, aoffset, 2, name, US"="); | |
| 37 | ||
| 38 | /* NULL is handled as an empty string */ | |
| 39 | ||
| 40 | if (value == NULL) value = US""; | |
| 41 | ||
| 42 | /* Quote the value if it is empty, contains white space, or starts with a quote | |
| 43 | character. */ | |
| 44 | ||
| 45 | if (value[0] == 0 || Ustrpbrk(value, " \t\n\r") != NULL || value[0] == '\"') | |
| 46 | { | |
| 47 | int j; | |
| 48 | result = string_cat(result, asize, aoffset, US"\"", 1); | |
| 49 | for (j = 0; j < vlength; j++) | |
| 50 | { | |
| 51 | if (value[j] == '\"' || value[j] == '\\') | |
| 52 | result = string_cat(result, asize, aoffset, US"\\", 1); | |
| 53 | result = string_cat(result, asize, aoffset, US value+j, 1); | |
| 54 | } | |
| 55 | result = string_cat(result, asize, aoffset, US"\"", 1); | |
| 56 | } | |
| 57 | else | |
| 58 | { | |
| 59 | result = string_cat(result, asize, aoffset, US value, vlength); | |
| 60 | } | |
| 61 | ||
| 62 | return string_cat(result, asize, aoffset, US" ", 1); | |
| 63 | } | |
| 64 | ||
| 65 | /* End of lf_quote.c */ |