amxb_ba_op_get.c

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#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
 
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <fcntl.h>
#include <string.h>
 
#include <amxc/amxc.h>
#include <amxp/amxp.h>
 
#include <amxd/amxd_common.h>
#include <amxd/amxd_dm.h>
#include <amxd/amxd_path.h>
#include <amxd/amxd_object.h>
 
#include <amxb/amxb_be_intf.h>
#include <amxb/amxb.h>
 
#include "amxb_priv.h"
 
static int amxb_invoke_get(amxb_bus_ctx_t* const bus_ctx,
                           const char* object,
                           const char* search_path,
                           const char* filter,
                           int32_t depth,
                           amxc_var_t* ret,
                           int timeout) {
    amxb_invoke_t* invoke_ctx = NULL;
    int retval = amxd_status_unknown_error;
    amxc_var_t* args = NULL;
    amxc_string_t full_path;
 
    amxc_string_init(&full_path, 0);
    amxc_var_new(&args);
    amxc_var_set_type(args, AMXC_VAR_ID_HTABLE);
 
    if(search_path != NULL) {
        amxc_var_add_key(cstring_t, args, "rel_path", search_path);
    }
    if((filter != NULL) && (*filter != 0)) {
        amxc_var_add_key(cstring_t, args, "filter", filter);
    }
    amxc_var_add_key(int32_t, args, "depth", depth);
    amxc_var_add_key(uint32_t, args, "access", bus_ctx->access);
 
    retval = amxb_new_invoke(&invoke_ctx, bus_ctx, object, NULL, "_get");
    when_failed(retval, exit);
    retval = amxb_invoke(invoke_ctx, args, ret, NULL, NULL, timeout);
 
exit:
    amxc_string_clean(&full_path);
    amxc_var_delete(&args);
    amxb_free_invoke(&invoke_ctx);
    return retval;
}
 
int amxb_get(amxb_bus_ctx_t* const bus_ctx,
             const char* search_path,
             int32_t depth,
             amxc_var_t* ret,
             int timeout) {
    return amxb_get_filtered(bus_ctx, search_path, NULL, depth, ret, timeout);
}
 
int amxb_get_filtered(amxb_bus_ctx_t* const bus_ctx,
                      const char* search_path,
                      const char* filter,
                      int32_t depth,
                      amxc_var_t* ret,
                      int timeout) {
    int retval = amxd_status_unknown_error;
    const amxb_be_funcs_t* fns = NULL;
    amxd_path_t path;
    bool islocal = false;
    char* object = NULL;
    const char* param = NULL;
    amxc_string_t temp;
 
    amxc_string_init(&temp, 0);
    amxd_path_init(&path, search_path);
    when_null(bus_ctx, exit);
    when_null(bus_ctx->bus_ctx, exit);
 
    while(amxd_path_get_type(&path) == amxd_path_reference) {
        retval = amxb_follow_reference(bus_ctx, &path, timeout);
        when_failed(retval, exit);
    }
 
    object = amxd_path_get_fixed_part(&path, true);
    if((object == NULL) || (strcmp(object, ".") == 0)) {
        retval = amxd_status_object_not_found;
        goto exit;
    }
    search_path = amxd_path_get(&path, AMXD_OBJECT_TERMINATE);
    search_path = search_path == NULL ? "" : search_path;
    param = amxd_path_get_param(&path);
    islocal = amxb_is_local_object(bus_ctx, object);
    fns = bus_ctx->bus_fn;
 
    if(param != NULL) {
        amxc_string_setf(&temp, "%s%s", search_path, param);
        search_path = amxc_string_get(&temp, 0);
    }
 
    if(islocal ||
       (!amxb_is_valid_be_func(fns, get, fns->get) &&
        !amxb_is_valid_be_func(fns, get, fns->get_filtered))) {
        retval = amxb_invoke_get(bus_ctx, object, search_path, filter,
                                 depth, ret, timeout);
    } else {
        if(amxb_is_valid_be_func(fns, get, fns->get_filtered)) {
            retval = fns->get_filtered(bus_ctx->bus_ctx, object, search_path, filter,
                                       depth, bus_ctx->access, ret, timeout);
 
        } else if(amxb_is_valid_be_func(fns, get, fns->get)) {
            retval = fns->get(bus_ctx->bus_ctx, object, search_path,
                              depth, bus_ctx->access, ret, timeout);
        }
    }
 
    if(retval == amxd_status_invalid_path) {
        retval = amxd_status_object_not_found;
    }
 
exit:
    amxc_string_clean(&temp);
    free(object);
    amxd_path_clean(&path);
    return retval;
}