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 pod  | 
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1
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 #include   | 
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2
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 #include   | 
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3
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 #include   | 
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4
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5
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 #include "houdini.h"  | 
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6
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7
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 /**  | 
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8
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  * According to the OWASP rules:  | 
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9
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  *  | 
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10
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  * & --> &  | 
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11
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  * < --> <  | 
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  * > --> >  | 
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13
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  * " --> "  | 
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14
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  * ' --> '     ' is not recommended  | 
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15
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  * / --> /     forward slash is included as it helps end an HTML entity  | 
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16
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  *  | 
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17
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  */  | 
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18
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 static const char HTML_ESCAPE_TABLE[] = {  | 
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19
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 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   | 
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20
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 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   | 
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21
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 	0, 0, 1, 0, 0, 0, 2, 3, 0, 0, 0, 0, 0, 0, 0, 4,   | 
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22
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 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 6, 0,   | 
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23
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 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   | 
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24
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 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   | 
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25
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 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   | 
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26
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 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,  | 
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27
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 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   | 
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28
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 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   | 
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29
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 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   | 
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30
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 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,  | 
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31
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 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   | 
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 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   | 
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33
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 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   | 
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34
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 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,  | 
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35
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36
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37
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 static const char *HTML_ESCAPES[] = {  | 
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38
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         "",  | 
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39
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         """,  | 
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40
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         "&",  | 
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41
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         "'",  | 
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42
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         "/",  | 
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43
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         "<",  | 
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44
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         ">"  | 
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45
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46
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    | 
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47
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 int  | 
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48
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7
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 houdini_escape_html0(gh_buf *ob, const uint8_t *src, size_t size, int secure)  | 
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49
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 {  | 
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50
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 	size_t  i = 0, org, esc = 0;  | 
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51
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    | 
| 
52
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25
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100
  
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 	while (i < size) {  | 
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53
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 		org = i;  | 
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54
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82
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100
  
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 		while (i < size && (esc = HTML_ESCAPE_TABLE[src[i]]) == 0)  | 
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100
  
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    | 
| 
55
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61
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 			i++;  | 
| 
56
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    | 
| 
57
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21
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100
  
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 		if (i > org) {  | 
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58
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13
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100
  
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 			if (unlikely(org == 0)) {  | 
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59
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3
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 50
  
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 				if (i >= size)  | 
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60
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 					return 0;  | 
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61
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    | 
| 
62
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0
  
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 				gh_buf_grow(ob, HOUDINI_ESCAPED_SIZE(size));  | 
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63
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 			}  | 
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64
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    | 
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65
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10
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 			gh_buf_put(ob, src + org, i - org);  | 
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66
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 		}  | 
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67
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    | 
| 
68
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 		/* escaping */  | 
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69
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18
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 50
  
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 		if (unlikely(i >= size))  | 
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70
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 			break;  | 
| 
71
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    | 
| 
72
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 		/* The forward slash is only escaped in secure mode */  | 
| 
73
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18
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100
  
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 		if (src[i] == '/' && !secure) {  | 
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 50
  
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    | 
| 
74
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0
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 			gh_buf_putc(ob, '/');  | 
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75
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 		} else {  | 
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76
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18
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 			gh_buf_puts(ob, HTML_ESCAPES[esc]);  | 
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77
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 		}  | 
| 
78
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    | 
| 
79
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18
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 		i++;  | 
| 
80
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 	}  | 
| 
81
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    | 
| 
82
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 	return 1;  | 
| 
83
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 }  | 
| 
84
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 | 
 
 | 
 
 | 
 
 | 
 
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    | 
| 
85
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 | 
 
 | 
 
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 int  | 
| 
86
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7
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 houdini_escape_html(gh_buf *ob, const uint8_t *src, size_t size)  | 
| 
87
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 {  | 
| 
88
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7
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 	return houdini_escape_html0(ob, src, size, 1);  | 
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89
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 }  | 
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90
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    |