ngx_http_script_flush_complex_value()

ngx_http_complex_value()
ngx_http_compile_complex_value()

src/http/ngx_http_script.c

@@ -12,7 +12,7 @@
 static ngx_int_t ngx_http_script_init_arrays(ngx_http_script_compile_t *sc);
 static ngx_int_t ngx_http_script_done(ngx_http_script_compile_t *sc);
 static ngx_int_t ngx_http_script_add_copy_code(ngx_http_script_compile_t *sc,
-    ngx_str_t *value);
+    ngx_str_t *value, ngx_uint_t last);
 static ngx_int_t ngx_http_script_add_var_code(ngx_http_script_compile_t *sc,
     ngx_str_t *name);
 static ngx_int_t ngx_http_script_add_args_code(ngx_http_script_compile_t *sc);
@@ -20,6 +20,10 @@ static ngx_int_t ngx_http_script_add_args_code(ngx_http_script_compile_t *sc);
 static ngx_int_t ngx_http_script_add_capture_code(ngx_http_script_compile_t *sc,
      ngx_uint_t n);
 #endif
+static ngx_int_t
+     ngx_http_script_add_full_name_code(ngx_http_script_compile_t *sc);
+static size_t ngx_http_script_full_name_len_code(ngx_http_script_engine_t *e);
+static void ngx_http_script_full_name_code(ngx_http_script_engine_t *e);
 
 
 #define ngx_http_script_exit  (u_char *) &ngx_http_script_exit_code
@@ -27,6 +31,186 @@ static ngx_int_t ngx_http_script_add_capture_code(ngx_http_script_compile_t *sc,
 static uintptr_t ngx_http_script_exit_code = (uintptr_t) NULL;
 
 
+void
+ngx_http_scrip_flush_complex_value(ngx_http_request_t *r,
+    ngx_http_complex_value_t *val)
+{
+    ngx_uint_t *index;
+
+    index = val->flushes;
+
+    if (index) {
+        while (*index != (ngx_uint_t) -1) {
+
+            if (r->variables[*index].no_cacheable) {
+                r->variables[*index].valid = 0;
+                r->variables[*index].not_found = 0;
+            }
+
+            index++;
+        }
+    }
+}
+
+
+ngx_int_t
+ngx_http_complex_value(ngx_http_request_t *r, ngx_http_complex_value_t *val,
+    ngx_str_t *value)
+{
+    size_t                        len;
+    ngx_http_script_code_pt       code;
+    ngx_http_script_len_code_pt   lcode;
+    ngx_http_script_engine_t      e;
+
+    if (val->lengths == NULL) {
+        *value = val->value;
+        return NGX_OK;
+    }
+
+    ngx_http_scrip_flush_complex_value(r, val);
+
+    ngx_memzero(&e, sizeof(ngx_http_script_engine_t));
+
+    e.ip = val->lengths;
+    e.request = r;
+    e.flushed = 1;
+
+    len = 0;
+
+    while (*(uintptr_t *) e.ip) {
+        lcode = *(ngx_http_script_len_code_pt *) e.ip;
+        len += lcode(&e);
+    }
+
+    value->len = len;
+    value->data = ngx_pnalloc(r->pool, len);
+    if (value->data == NULL) {
+        return NGX_ERROR;
+    }
+
+    e.ip = val->values;
+    e.pos = value->data;
+    e.buf = *value;
+
+    while (*(uintptr_t *) e.ip) {
+        code = *(ngx_http_script_code_pt *) e.ip;
+        code((ngx_http_script_engine_t *) &e);
+    }
+
+    *value = e.buf;
+
+    return NGX_OK;
+}
+
+
+ngx_int_t
+ngx_http_compile_complex_value(ngx_http_compile_complex_value_t *ccv)
+{
+    ngx_str_t                  *v;
+    ngx_uint_t                  i, n, nv, nc;
+    ngx_array_t                 flushes, lengths, values, *pf, *pl, *pv;
+    ngx_http_script_compile_t   sc;
+
+    v = ccv->value;
+
+    if (v->len == 0) {
+        ngx_conf_log_error(NGX_LOG_EMERG, ccv->cf, 0, "empty parameter");
+        return NGX_ERROR;
+    }
+
+    ccv->complex_value->value = *v;
+    ccv->complex_value->flushes = NULL;
+    ccv->complex_value->lengths = NULL;
+    ccv->complex_value->values = NULL;
+
+    nv = 0;
+    nc = 0;
+
+    for (i = 0; i < v->len; i++) {
+        if (v->data[i] == '$') {
+            if (v->data[i + 1] >= '1' && v->data[i + 1] <= '9') {
+                nc++;
+
+            } else {
+                nv++;
+            }
+        }
+    }
+
+    if (v->data[0] != '$' && (ccv->conf_prefix || ccv->root_prefix)) {
+
+        if (ngx_conf_full_name(ccv->cf->cycle, v, ccv->conf_prefix) != NGX_OK) {
+            return NGX_ERROR;
+        }
+
+        ccv->conf_prefix = 0;
+        ccv->root_prefix = 0;
+    }
+
+    if (nv == 0 && nc == 0) {
+        return NGX_OK;
+    }
+
+    n = nv + 1;
+
+    if (ngx_array_init(&flushes, ccv->cf->pool, n, sizeof(ngx_uint_t))
+        != NGX_OK)
+    {
+        return NGX_ERROR;
+    }
+
+    n = nv * (2 * sizeof(ngx_http_script_copy_code_t)
+                  + sizeof(ngx_http_script_var_code_t))
+        + sizeof(uintptr_t);
+
+    if (ngx_array_init(&lengths, ccv->cf->pool, n, 1) != NGX_OK) {
+        return NGX_ERROR;
+    }
+
+    n = (nv * (2 * sizeof(ngx_http_script_copy_code_t)
+                   + sizeof(ngx_http_script_var_code_t))
+                + sizeof(uintptr_t)
+                + v->len
+                + sizeof(uintptr_t) - 1)
+            & ~(sizeof(uintptr_t) - 1);
+
+    if (ngx_array_init(&values, ccv->cf->pool, n, 1) != NGX_OK) {
+        return NGX_ERROR;
+    }
+
+    pf = &flushes;
+    pl = &lengths;
+    pv = &values;
+
+    ngx_memzero(&sc, sizeof(ngx_http_script_compile_t));
+
+    sc.cf = ccv->cf;
+    sc.source = v;
+    sc.flushes = &pf;
+    sc.lengths = &pl;
+    sc.values = &pv;
+    sc.complete_lengths = 1;
+    sc.complete_values = 1;
+    sc.zero = ccv->zero;
+    sc.conf_prefix = ccv->conf_prefix;
+    sc.root_prefix = ccv->root_prefix;
+
+    if (ngx_http_script_compile(&sc) != NGX_OK) {
+        return NGX_ERROR;
+    }
+
+    if (flushes.nelts) {
+        ccv->complex_value->flushes = flushes.elts;
+        ccv->complex_value->flushes[flushes.nelts] = (ngx_uint_t) -1;
+    }
+
+    ccv->complex_value->lengths = lengths.elts;
+    ccv->complex_value->values = values.elts;
+
+    return NGX_OK;
+}
+
+
 ngx_uint_t
 ngx_http_script_variables_count(ngx_str_t *value)
 {
@@ -180,7 +364,9 @@ ngx_http_script_compile(ngx_http_script_compile_t *sc)
 
         sc->size += name.len;
 
-        if (ngx_http_script_add_copy_code(sc, &name) != NGX_OK) {
+        if (ngx_http_script_add_copy_code(sc, &name, (i == sc->source->len))
+            != NGX_OK)
+        {
             return NGX_ERROR;
         }
     }
@@ -309,8 +495,25 @@ ngx_http_script_init_arrays(ngx_http_script_compile_t *sc)
 static ngx_int_t
 ngx_http_script_done(ngx_http_script_compile_t *sc)
 {
+    ngx_str_t    zero;
     uintptr_t   *code;
 
+    if (sc->zero) {
+
+        zero.len = 1;
+        zero.data = (u_char *) "\0";
+
+        if (ngx_http_script_add_copy_code(sc, &zero, 0) != NGX_OK) {
+            return NGX_ERROR;
+        }
+    }
+
+    if (sc->conf_prefix || sc->root_prefix) {
+        if (ngx_http_script_add_full_name_code(sc) != NGX_OK) {
+            return NGX_ERROR;
+        }
+    }
+
     if (sc->complete_lengths) {
         code = ngx_http_script_add_code(*sc->lengths, sizeof(uintptr_t), NULL);
         if (code == NULL) {
@@ -373,11 +576,16 @@ ngx_http_script_add_code(ngx_array_t *codes, size_t size, void *code)
 
 
 static ngx_int_t
-ngx_http_script_add_copy_code(ngx_http_script_compile_t *sc, ngx_str_t *value)
+ngx_http_script_add_copy_code(ngx_http_script_compile_t *sc, ngx_str_t *value,
+    ngx_uint_t last)
 {
-    size_t                        size;
+    u_char                       *p;
+    size_t                        size, len, zero;
     ngx_http_script_copy_code_t  *code;
 
+    zero = (sc->zero && last);
+    len = value->len + zero;
+
     code = ngx_http_script_add_code(*sc->lengths,
                                     sizeof(ngx_http_script_copy_code_t), NULL);
     if (code == NULL) {
@@ -385,10 +593,9 @@ ngx_http_script_add_copy_code(ngx_http_script_compile_t *sc, ngx_str_t *value)
     }
 
     code->code = (ngx_http_script_code_pt) ngx_http_script_copy_len_code;
-    code->len = value->len;
+    code->len = len;
 
-    size = (sizeof(ngx_http_script_copy_code_t) + value->len
+    size = (sizeof(ngx_http_script_copy_code_t) + len + sizeof(uintptr_t) - 1)
-               + sizeof(uintptr_t) - 1)
             & ~(sizeof(uintptr_t) - 1);
 
     code = ngx_http_script_add_code(*sc->values, size, &sc->main);
@@ -397,11 +604,16 @@ ngx_http_script_add_copy_code(ngx_http_script_compile_t *sc, ngx_str_t *value)
     }
 
     code->code = ngx_http_script_copy_code;
-    code->len = value->len;
+    code->len = len;
 
-    ngx_memcpy((u_char *) code + sizeof(ngx_http_script_copy_code_t),
+    p = ngx_cpymem((u_char *) code + sizeof(ngx_http_script_copy_code_t),
                    value->data, value->len);
 
+    if (zero) {
+        *p = '\0';
+        sc->zero = 0;
+    }
+
     return NGX_OK;
 }
 
@@ -988,6 +1200,77 @@ ngx_http_script_copy_capture_code(ngx_http_script_engine_t *e)
 #endif
 
 
+static ngx_int_t
+ngx_http_script_add_full_name_code(ngx_http_script_compile_t *sc)
+{
+    ngx_http_script_full_name_code_t  *code;
+
+    code = ngx_http_script_add_code(*sc->lengths,
+                                    sizeof(ngx_http_script_full_name_code_t),
+                                    NULL);
+    if (code == NULL) {
+        return NGX_ERROR;
+    }
+
+    code->code = (ngx_http_script_code_pt) ngx_http_script_full_name_len_code;
+    code->prefix = sc->conf_prefix;
+
+    code = ngx_http_script_add_code(*sc->values,
+                                    sizeof(ngx_http_script_full_name_code_t),
+                                    &sc->main);
+    if (code == NULL) {
+        return NGX_ERROR;
+    }
+
+    code->code = ngx_http_script_full_name_code;
+    code->prefix = sc->conf_prefix;
+
+    return NGX_OK;
+}
+
+
+static size_t
+ngx_http_script_full_name_len_code(ngx_http_script_engine_t *e)
+{
+    ngx_http_script_full_name_code_t  *code;
+
+    code = (ngx_http_script_full_name_code_t *) e->ip;
+
+    e->ip += sizeof(ngx_http_script_full_name_code_t);
+
+    return code->prefix ? sizeof(NGX_CONF_PREFIX) : ngx_cycle->root.len;
+}
+
+
+static void
+ngx_http_script_full_name_code(ngx_http_script_engine_t *e)
+{
+    ngx_http_script_full_name_code_t  *code;
+
+    ngx_str_t  value;
+
+    code = (ngx_http_script_full_name_code_t *) e->ip;
+
+    value.data = e->buf.data;
+    value.len = e->pos - e->buf.data;
+
+    if (ngx_conf_full_name((ngx_cycle_t *) ngx_cycle, &value, code->prefix)
+        != NGX_OK)
+    {
+        e->ip = ngx_http_script_exit;
+        e->status = NGX_HTTP_INTERNAL_SERVER_ERROR;
+        return;
+    }
+
+    e->buf = value;
+
+    ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
+                   "http script fullname: \"%V\"", &value);
+
+    e->ip += sizeof(ngx_http_script_full_name_code_t);
+}
+
+
 void
 ngx_http_script_return_code(ngx_http_script_engine_t *e)
 {

src/http/ngx_http_script.h

@@ -53,12 +53,34 @@ typedef struct {
     unsigned                    compile_args:1;
     unsigned                    complete_lengths:1;
     unsigned                    complete_values:1;
-    unsigned                    dup_capture:1;
+    unsigned                    zero:1;
+    unsigned                    conf_prefix:1;
+    unsigned                    root_prefix:1;
 
+    unsigned                    dup_capture:1;
     unsigned                    args:1;
 } ngx_http_script_compile_t;
 
 
+typedef struct {
+    ngx_str_t                   value;
+    ngx_uint_t                 *flushes;
+    void                       *lengths;
+    void                       *values;
+} ngx_http_complex_value_t;
+
+
+typedef struct {
+    ngx_conf_t                 *cf;
+    ngx_str_t                  *value;
+    ngx_http_complex_value_t   *complex_value;
+
+    unsigned                    zero:1;
+    unsigned                    conf_prefix:1;
+    unsigned                    root_prefix:1;
+} ngx_http_compile_complex_value_t;
+
+
 typedef void (*ngx_http_script_code_pt) (ngx_http_script_engine_t *e);
 typedef size_t (*ngx_http_script_len_code_pt) (ngx_http_script_engine_t *e);
 
@@ -129,6 +151,12 @@ typedef struct {
 #endif
 
 
+typedef struct {
+    ngx_http_script_code_pt     code;
+    uintptr_t                   prefix;
+} ngx_http_script_full_name_code_t;
+
+
 typedef struct {
     ngx_http_script_code_pt     code;
     uintptr_t                   status;
@@ -175,6 +203,12 @@ typedef struct {
 } ngx_http_script_value_code_t;
 
 
+void ngx_http_scrip_flush_complex_value(ngx_http_request_t *r,
+    ngx_http_complex_value_t *val);
+ngx_int_t ngx_http_complex_value(ngx_http_request_t *r,
+    ngx_http_complex_value_t *val, ngx_str_t *value);
+ngx_int_t ngx_http_compile_complex_value(ngx_http_compile_complex_value_t *ccv);
+
 ngx_uint_t ngx_http_script_variables_count(ngx_str_t *value);
 ngx_int_t ngx_http_script_compile(ngx_http_script_compile_t *sc);
 u_char *ngx_http_script_run(ngx_http_request_t *r, ngx_str_t *value,