ngx_int_t ngx_x_rid_header_get_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data) {
u_char *p = NULL;
ngx_table_elt_t *header;
ngx_str_t hv;
size_t hlen = 22;
header = search_headers_in(r, ngx_x_rid_header_name.data, ngx_x_rid_header_name.len);
if (header != NULL) {
hv = header->value;
if (hv.len >= 20 && hv.len <= 50) {
// Reuse existing header
hlen = hv.len;
p = hv.data;
}
}
if (p == NULL) {
// Prepare 22 bytes to store the base58 string
p = ngx_pnalloc(r->pool, 22);
if (p == NULL) {
return NGX_ERROR;
}
#if (NGX_FREEBSD)
#error FreeBSD is not supported yet, sorry.
#elif (NGX_LINUX)
uuid_t* uuid;
// return of uuid_s_ok = 0
if ( uuid_create(&uuid) ) {
return -1;
}
if ( uuid_make(uuid, UUID_MAKE_V4) ) {
uuid_destroy(uuid);
return -1;
}
// at this point we have 16 bytes in "uuid", ready for conversion
uuid_fmt22(uuid, p);
uuid_destroy(uuid);
#elif (NGX_SOLARIS)
#error Solaris is not supported yet, sorry.
#elif (NGX_DARWIN)
uuid_t uuid;
uuid_generate(uuid);
uuid_fmt22(uuid, p);
#endif
}
v->len = hlen;
v->valid = 1;
v->no_cacheable = 0;
v->not_found = 0;
v->data = p;
return NGX_OK;
}
ngx_int_t ngx_x_rid_header_get_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data) {
u_char *p;
// Prepare 22 bytes to store the base58 string
p = ngx_pnalloc(r->pool, 22);
if (p == NULL) {
return NGX_ERROR;
}
#if (NGX_FREEBSD)
#error FreeBSD is not supported yet, sorry.
#elif (NGX_LINUX)
uuid_t* uuid;
// return of uuid_s_ok = 0
if ( uuid_create(&uuid) ) {
return -1;
}
if ( uuid_make(uuid, UUID_MAKE_V4) ) {
uuid_destroy(uuid);
return -1;
}
// at this point we have 16 bytes in "uuid", ready for conversion
uuid_fmt22(uuid, p);
uuid_destroy(uuid);
#elif (NGX_SOLARIS)
#error Solaris is not supported yet, sorry.
#elif (NGX_DARWIN)
uuid_t uuid;
uuid_generate(uuid);
uuid_fmt22(uuid, p);
#endif
v->len = 22;
v->valid = 1;
v->no_cacheable = 0;
v->not_found = 0;
v->data = p;
return NGX_OK;
}