OSF DCE Application Development Guide--Core Components

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OSF DCE Application Development Guide—Core Components

sec_attr_enc_str_array_t *attr_array;

unsigned_char_t *string_uuid, temp_string[200];

dced_attr_list_t attr_list;

dced_binding_create(dced_c_service_hostdata,

dced_c_binding_syntax_default,

&dced_bh,

&status);

dced_hostdata_read(dced_bh,

&dced_g_uuid_hostdata_post_proc,

&dced_g_uuid_fileattr,

&data_ptr,

&status);

/* Create New Array and Copy Old Data into it */

num_strings = data_ptr->attr_value.tagged_union.string_array->num_strings + 1;

str_size = sizeof(sec_attr_enc_str_array_t) +

num_strings * sizeof(sec_attr_enc_printstring_p_t);

attr_array = (sec_attr_enc_str_array_t *)malloc(str_size);

attr_array->num_strings = num_strings;

for(i=0; i<(num_strings-1); i++) {

attr_array->strings[i] =

data_ptr->attr_value.tagged_union.string_array->strings[i];

}

dced_inq_id(dced_bh, "NEWERprinter", &entry_uuid, &status);

uuid_to_string(&entry_uuid, &string_uuid, &status);

sprintf(temp_string, "%s %s", string_uuid, "/path/and/program/to/run");

attr_array->strings[num_strings-1] = (dced_string_t)(temp_string);

data_ptr->attr_value.tagged_union.string_array = attr_array;

attr_list.count = 1;

attr_list.list = (sec_attr_t *)malloc(attr_list.count * sizeof(sec_attr_t));

attr_list.list = data_ptr;

dced_hostdata_write(dced_bh,

&dced_g_uuid_hostdata_post_proc,

&attr_list,

&status);

dced_objects_release(dced_bh, 1, (void*)(data_ptr), &status);

dced_binding_free(dced_bh, &status);

The description of this example is as follows:

dced_binding_create()

This routine creates a dced binding to the hostdata service on a

speciﬁed host. The binding handle created is used in all subsequent calls

to appropriate dced API routines. The dced_c_service_hostdata

argument is a constant string that is the well-known name of the

hostdata service. When this string is used by itself, it refers to the

service on the local host.

dced_hostdata_read( )

This routine reads the hostdata item referred to by the entry UUID. In

this example, the global variable dced_g_uuid_hostdata_post_proc

represents the UUID for the well-known post_processors ﬁle. The

second parameter speciﬁes an attribute for the data. Attributes describe

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