Mercurial > dovecot > core-2.2
annotate src/lib/strescape.c @ 896:21ffcce83c70 HEAD
Rewrote rfc822-tokenize.c to work one token at a time so it won't uselessly
take memory, maybe also a bit faster. This caused pretty large changes all
around.
Also moved all string (un)escaping code to lib/strescape.c.
author | Timo Sirainen <tss@iki.fi> |
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date | Fri, 03 Jan 2003 17:57:12 +0200 |
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children | 0d5be52d7131 |
rev | line source |
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896
21ffcce83c70
Rewrote rfc822-tokenize.c to work one token at a time so it won't uselessly
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1 /* |
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2 Copyright (c) 2003 Timo Sirainen |
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3 |
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4 Permission is hereby granted, free of charge, to any person obtaining |
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5 a copy of this software and associated documentation files (the |
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6 "Software"), to deal in the Software without restriction, including |
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7 without limitation the rights to use, copy, modify, merge, publish, |
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8 distribute, sublicense, and/or sell copies of the Software, and to |
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9 permit persons to whom the Software is furnished to do so, subject to |
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10 the following conditions: |
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11 |
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12 The above copyright notice and this permission notice shall be |
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13 included in all copies or substantial portions of the Software. |
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14 |
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15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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16 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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17 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
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18 IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
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19 CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
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20 TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
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21 SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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22 */ |
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23 |
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24 #include "lib.h" |
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25 #include "str.h" |
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26 #include "strescape.h" |
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27 |
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28 const char *str_escape(const char *str) |
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29 { |
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30 char *ret, *p; |
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31 size_t i, esc; |
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32 |
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33 /* get length of string and number of chars to escape */ |
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34 esc = 0; |
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35 for (i = 0; str[i] != '\0'; i++) { |
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36 if (IS_ESCAPED_CHAR(str[i])) |
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37 esc++; |
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38 } |
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39 |
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40 if (esc == 0) |
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41 return str; |
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42 |
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43 /* @UNSAFE: escape them */ |
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44 p = ret = t_malloc(i + esc + 1); |
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45 for (; *str != '\0'; str++) { |
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46 if (IS_ESCAPED_CHAR(*str)) |
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47 *p++ = '\\'; |
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48 *p++ = *str; |
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49 } |
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50 *p = '\0'; |
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51 return ret; |
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52 } |
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53 |
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54 void str_append_unescaped(String *dest, const char *src, size_t src_size) |
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55 { |
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56 size_t start = 0, i = 0; |
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57 |
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58 while (i < src_size) { |
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59 start = i; |
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60 for (; i < src_size; i++) { |
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61 if (src[i] == '\\') |
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62 break; |
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63 } |
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64 |
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65 str_append_n(dest, src + start, i-start); |
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66 |
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67 if (src[i] == '\\') |
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68 i++; |
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69 start = i; |
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70 } |
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71 } |
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72 |
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73 void str_unescape(char *str) |
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74 { |
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75 /* @UNSAFE */ |
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76 char *dest; |
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77 |
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78 while (*str != '\\') { |
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79 if (*str == '\0') |
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80 return; |
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81 str++; |
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82 } |
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83 |
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84 for (dest = str; *str != '\0'; str++) { |
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85 if (*str != '\\' || str[1] == '\0') |
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86 *dest++ = *str; |
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87 } |
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88 |
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89 *dest = '\0'; |
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90 } |