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ngx_escape_html()

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This commit is contained in:
Igor Sysoev 2007-09-27 09:36:50 +00:00
parent 0659720dc8
commit 1730c758a1
2 changed files with 63 additions and 0 deletions
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61
src/core/ngx_string.c
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@ -1299,6 +1299,67 @@ done:
}
uintptr_t
ngx_escape_html(u_char *dst, u_char *src, size_t size)
{
u_char ch;
ngx_uint_t i, len;
if (dst == NULL) {
len = 0;
for (i = 0; i < size; i++) {
switch (*src++) {
case '<':
len += sizeof("&lt;") - 2;
break;
case '>':
len += sizeof("&gt;") - 2;
break;
case '&':
len += sizeof("&amp;") - 2;
break;
default:
break;
}
}
return (uintptr_t) len;
}
for (i = 0; i < size; i++) {
ch = *src++;
switch (ch) {
case '<':
*dst++ = '&'; *dst++ = 'l'; *dst++ = 't'; *dst++ = ';';
break;
case '>':
*dst++ = '&'; *dst++ = 'g'; *dst++ = 't'; *dst++ = ';';
break;
case '&':
*dst++ = '&'; *dst++ = 'a'; *dst++ = 'm'; *dst++ = 'p';
*dst++ = ';';
break;
default:
*dst++ = ch;
break;
}
}
return (uintptr_t) dst;
}
/* ngx_sort() is implemented as insertion sort because we need stable sort */
void

2
src/core/ngx_string.h
View File

@ -165,6 +165,8 @@ u_char *ngx_utf_cpystrn(u_char *dst, u_char *src, size_t n);
uintptr_t ngx_escape_uri(u_char *dst, u_char *src, size_t size,
ngx_uint_t type);
void ngx_unescape_uri(u_char **dst, u_char **src, size_t size, ngx_uint_t type);
uintptr_t ngx_escape_html(u_char *dst, u_char *src, size_t size);
void ngx_sort(void *base, size_t n, size_t size,