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test user agent in header callback

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This commit is contained in:
Igor Sysoev 2008-05-13 09:18:58 +00:00
parent c11582a983
commit bc5fb294af
1 changed files with 58 additions and 47 deletions
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105
src/http/ngx_http_request.c
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@ -23,6 +23,8 @@ static ngx_int_t ngx_http_process_unique_header_line(ngx_http_request_t *r,
ngx_table_elt_t *h, ngx_uint_t offset); ngx_table_elt_t *h, ngx_uint_t offset);
static ngx_int_t ngx_http_process_connection(ngx_http_request_t *r, static ngx_int_t ngx_http_process_connection(ngx_http_request_t *r,
ngx_table_elt_t *h, ngx_uint_t offset); ngx_table_elt_t *h, ngx_uint_t offset);
static ngx_int_t ngx_http_process_user_agent(ngx_http_request_t *r,
ngx_table_elt_t *h, ngx_uint_t offset);
static ngx_int_t ngx_http_process_cookie(ngx_http_request_t *r, static ngx_int_t ngx_http_process_cookie(ngx_http_request_t *r,
ngx_table_elt_t *h, ngx_uint_t offset); ngx_table_elt_t *h, ngx_uint_t offset);
@ -79,8 +81,7 @@ ngx_http_header_t ngx_http_headers_in[] = {
offsetof(ngx_http_headers_in_t, if_modified_since), offsetof(ngx_http_headers_in_t, if_modified_since),
ngx_http_process_unique_header_line }, ngx_http_process_unique_header_line },
{ ngx_string("User-Agent"), offsetof(ngx_http_headers_in_t, user_agent), { ngx_string("User-Agent"), 0, ngx_http_process_user_agent },
ngx_http_process_header_line },
{ ngx_string("Referer"), offsetof(ngx_http_headers_in_t, referer), { ngx_string("Referer"), offsetof(ngx_http_headers_in_t, referer),
ngx_http_process_header_line }, ngx_http_process_header_line },
@ -1249,11 +1250,65 @@ ngx_http_process_cookie(ngx_http_request_t *r, ngx_table_elt_t *h,
} }
static ngx_int_t
ngx_http_process_user_agent(ngx_http_request_t *r, ngx_table_elt_t *h,
ngx_uint_t offset)
{
u_char *ua, *user_agent;
if (r->headers_in.user_agent) {
return NGX_OK;
}
r->headers_in.user_agent = h;
/* check some widespread browsers while the header is in CPU cache */
user_agent = h->value.data;
ua = ngx_strstrn(user_agent, "MSIE", 4 - 1);
if (ua && ua + 8 < user_agent + r->headers_in.user_agent->value.len) {
r->headers_in.msie = 1;
if (ua[4] == ' ' && ua[5] == '4' && ua[6] == '.') {
r->headers_in.msie4 = 1;
}
#if 0
/* MSIE ignores the SSL "close notify" alert */
if (c->ssl) {
c->ssl->no_send_shutdown = 1;
}
#endif
}
if (ngx_strstrn(user_agent, "Opera", 5 - 1)) {
r->headers_in.opera = 1;
r->headers_in.msie = 0;
r->headers_in.msie4 = 0;
}
if (!r->headers_in.msie && !r->headers_in.opera) {
if (ngx_strstrn(user_agent, "Gecko/", 6 - 1)) {
r->headers_in.gecko = 1;
} else if (ngx_strstrn(user_agent, "Konqueror", 9 - 1)) {
r->headers_in.konqueror = 1;
}
}
return NGX_OK;
}
static ngx_int_t static ngx_int_t
ngx_http_process_request_header(ngx_http_request_t *r) ngx_http_process_request_header(ngx_http_request_t *r)
{ {
size_t len; size_t len;
u_char *host, *ua, *user_agent, ch; u_char *host, ch;
ngx_uint_t hash; ngx_uint_t hash;
if (r->headers_in.host) { if (r->headers_in.host) {
@ -1353,50 +1408,6 @@ ngx_http_process_request_header(ngx_http_request_t *r)
} }
} }
if (r->headers_in.user_agent) {
/*
* check some widespread browsers while the headers are still
* in CPU cache
*/
user_agent = r->headers_in.user_agent->value.data;
ua = ngx_strstrn(user_agent, "MSIE", 4 - 1);
if (ua && ua + 8 < user_agent + r->headers_in.user_agent->value.len) {
r->headers_in.msie = 1;
if (ua[4] == ' ' && ua[5] == '4' && ua[6] == '.') {
r->headers_in.msie4 = 1;
}
#if 0
/* MSIE ignores the SSL "close notify" alert */
if (c->ssl) {
c->ssl->no_send_shutdown = 1;
}
#endif
}
if (ngx_strstrn(user_agent, "Opera", 5 - 1)) {
r->headers_in.opera = 1;
r->headers_in.msie = 0;
r->headers_in.msie4 = 0;
}
if (!r->headers_in.msie && !r->headers_in.opera) {
if (ngx_strstrn(user_agent, "Gecko/", 6 - 1)) {
r->headers_in.gecko = 1;
} else if (ngx_strstrn(user_agent, "Konqueror", 9 - 1)) {
r->headers_in.konqueror = 1;
}
}
}
return NGX_OK; return NGX_OK;
} }