server.c File Reference

#include <unistd.h>
#include <signal.h>
#include <libubox/blobmsg_json.h>
#include "libubus.h"
#include "count.h"

Go to the source code of this file.

Data Structures
struct	hello_request

Enumerations
enum	{ HELLO_ID , HELLO_MSG , __HELLO_MAX }
enum	{ WATCH_ID , WATCH_COUNTER , __WATCH_MAX }
enum	{ COUNT_TO , COUNT_STRING , __COUNT_MAX }

Functions
static void	test_hello_fd_reply (struct uloop_timeout *t)
static void	test_hello_reply (struct uloop_timeout *t)
static int	test_hello (struct ubus_context *ctx, struct ubus_object *obj, struct ubus_request_data *req, const char *method, struct blob_attr *msg)
static void	test_handle_remove (struct ubus_context *ctx, struct ubus_subscriber *s, uint32_t id)
static int	test_notify (struct ubus_context *ctx, struct ubus_object *obj, struct ubus_request_data *req, const char *method, struct blob_attr *msg)
static int	test_watch (struct ubus_context *ctx, struct ubus_object *obj, struct ubus_request_data *req, const char *method, struct blob_attr *msg)
static int	test_count (struct ubus_context *ctx, struct ubus_object *obj, struct ubus_request_data *req, const char *method, struct blob_attr *msg)
static void	server_main (void)
int	main (int argc, char **argv)

Variables
static struct ubus_context *	ctx
static struct ubus_subscriber	test_event
static struct blob_buf	b
static const struct blobmsg_policy	hello_policy []
static const struct blobmsg_policy	watch_policy [__WATCH_MAX]
static const struct blobmsg_policy	count_policy [__COUNT_MAX]
static const struct ubus_method	test_methods []
static struct ubus_object_type	test_object_type
static struct ubus_object	test_object

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
HELLO_ID
HELLO_MSG
__HELLO_MAX

Definition at line 25 of file server.c.

     {
        HELLO_ID,
        HELLO_MSG,
        __HELLO_MAX
};

anonymous enum

anonymous enum

Enumerator
WATCH_ID
WATCH_COUNTER
__WATCH_MAX

Definition at line 108 of file server.c.

     {
        WATCH_ID,
        WATCH_COUNTER,
        __WATCH_MAX
};

anonymous enum

anonymous enum

Enumerator
COUNT_TO
COUNT_STRING
__COUNT_MAX

Definition at line 160 of file server.c.

     {
    COUNT_TO,
    COUNT_STRING,
    __COUNT_MAX
};

Function Documentation

main()

int main	(	int	argc,
		char **	argv
	)

Definition at line 229 of file server.c.

{
        const char *ubus_socket = NULL;
        int ch;
 
        while ((ch = getopt(argc, argv, "cs:")) != -1) {
                switch (ch) {
                case 's':
                        ubus_socket = optarg;
                        break;
                default:
                        break;
                }
        }
 
        uloop_init();
        signal(SIGPIPE, SIG_IGN);
 
        ctx = ubus_connect(ubus_socket);
        if (!ctx) {
                fprintf(stderr, "Failed to connect to ubus\n");
                return -1;
        }
 
        ubus_add_uloop(ctx);
 
        server_main();
 
        ubus_free(ctx);
        uloop_done();
 
        return 0;
}

server_main()

static void server_main ( void  )

static

Definition at line 214 of file server.c.

{
        int ret;
 
        ret = ubus_add_object(ctx, &test_object);
        if (ret)
                fprintf(stderr, "Failed to add object: %s\n", ubus_strerror(ret));
 
        ret = ubus_register_subscriber(ctx, &test_event);
        if (ret)
                fprintf(stderr, "Failed to add watch handler: %s\n", ubus_strerror(ret));
 
        uloop_run();
}

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test_count()

static int test_count ( struct ubus_context *  ctx, struct ubus_object *  obj, struct ubus_request_data *  req, const char *  method, struct blob_attr *  msg  )

static

Definition at line 171 of file server.c.

{
        struct blob_attr *tb[__COUNT_MAX];
        char *s1, *s2;
        uint32_t num;
 
        blobmsg_parse(count_policy, __COUNT_MAX, tb, blob_data(msg), blob_len(msg));
        if (!tb[COUNT_TO] || !tb[COUNT_STRING])
                return UBUS_STATUS_INVALID_ARGUMENT;
 
        num = blobmsg_get_u32(tb[COUNT_TO]);
        s1 = blobmsg_get_string(tb[COUNT_STRING]);
        s2 = count_to_number(num);
        if (!s1 || !s2) {
                free(s2);
                return UBUS_STATUS_UNKNOWN_ERROR;
        }
        blob_buf_init(&b, 0);
        blobmsg_add_u32(&b, "rc", strcmp(s1, s2));
        ubus_send_reply(ctx, req, b.head);
        free(s2);
 
        return 0;
}

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test_handle_remove()

static void test_handle_remove ( struct ubus_context *  ctx, struct ubus_subscriber *  s, uint32_t  id  )

static

Definition at line 120 of file server.c.

{
        fprintf(stderr, "Object %08x went away\n", id);
}

test_hello()

static int test_hello ( struct ubus_context *  ctx, struct ubus_object *  obj, struct ubus_request_data *  req, const char *  method, struct blob_attr *  msg  )

static

Definition at line 81 of file server.c.

{
        struct hello_request *hreq;
        struct blob_attr *tb[__HELLO_MAX];
        const char format[] = "%s received a message: %s";
        const char *msgstr = "(unknown)";
 
        blobmsg_parse(hello_policy, ARRAY_SIZE(hello_policy), tb, blob_data(msg), blob_len(msg));
 
        if (tb[HELLO_MSG])
                msgstr = blobmsg_data(tb[HELLO_MSG]);
 
        size_t len = sizeof(*hreq) + sizeof(format) + strlen(obj->name) + strlen(msgstr) + 1;
        hreq = calloc(1, len);
        if (!hreq)
                return UBUS_STATUS_UNKNOWN_ERROR;
 
        snprintf(hreq->data, len, format, obj->name, msgstr);
        ubus_defer_request(ctx, req, &hreq->req);
        hreq->timeout.cb = test_hello_reply;
        uloop_timeout_set(&hreq->timeout, 1000);
 
        return 0;
}

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test_hello_fd_reply()

static void test_hello_fd_reply ( struct uloop_timeout *  t )

static

Definition at line 44 of file server.c.

{
        struct hello_request *req = container_of(t, struct hello_request, timeout);
        char *data;
 
        data = alloca(strlen(req->data) + 32);
        sprintf(data, "msg%d: %s\n", ++req->idx, req->data);
        if (write(req->fd, data, strlen(data)) < 0) {
                close(req->fd);
                free(req);
                return;
        }
 
        uloop_timeout_set(&req->timeout, 1000);
}

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test_hello_reply()

static void test_hello_reply ( struct uloop_timeout *  t )

static

Definition at line 60 of file server.c.

{
        struct hello_request *req = container_of(t, struct hello_request, timeout);
        int fds[2];
 
        blob_buf_init(&b, 0);
        blobmsg_add_string(&b, "message", req->data);
        ubus_send_reply(ctx, &req->req, b.head);
 
        if (pipe(fds) == -1) {
                fprintf(stderr, "Failed to create pipe\n");
                return;
        }
        ubus_request_set_fd(ctx, &req->req, fds[0]);
        ubus_complete_deferred_request(ctx, &req->req, 0);
        req->fd = fds[1];
 
        req->timeout.cb = test_hello_fd_reply;
        test_hello_fd_reply(t);
}

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test_notify()

static int test_notify ( struct ubus_context *  ctx, struct ubus_object *  obj, struct ubus_request_data *  req, const char *  method, struct blob_attr *  msg  )

static

Definition at line 127 of file server.c.

{
#if 0
        char *str;
 
        str = blobmsg_format_json(msg, true);
        fprintf(stderr, "Received notification '%s': %s\n", method, str);
        free(str);
#endif
 
        return 0;
}

test_watch()

static int test_watch ( struct ubus_context *  ctx, struct ubus_object *  obj, struct ubus_request_data *  req, const char *  method, struct blob_attr *  msg  )

static

Definition at line 142 of file server.c.

{
        struct blob_attr *tb[__WATCH_MAX];
        int ret;
 
        blobmsg_parse(watch_policy, __WATCH_MAX, tb, blob_data(msg), blob_len(msg));
        if (!tb[WATCH_ID])
                return UBUS_STATUS_INVALID_ARGUMENT;
 
        test_event.remove_cb = test_handle_remove;
        test_event.cb = test_notify;
        ret = ubus_subscribe(ctx, &test_event, blobmsg_get_u32(tb[WATCH_ID]));
        fprintf(stderr, "Watching object %08x: %s\n", blobmsg_get_u32(tb[WATCH_ID]), ubus_strerror(ret));
        return ret;
}

Variable Documentation

b

struct blob_buf b

static

Definition at line 21 of file server.c.

count_policy

const struct blobmsg_policy count_policy[__COUNT_MAX]

static

Initial value:

= {
    [COUNT_TO] = { .name = "to", .type = BLOBMSG_TYPE_INT32 },
    [COUNT_STRING] = { .name = "string", .type = BLOBMSG_TYPE_STRING },
}

Definition at line 142 of file server.c.

ctx

struct ubus_context* ctx

static

Definition at line 21 of file server.c.

hello_policy

const struct blobmsg_policy hello_policy[]

static

Initial value:

= {
        [HELLO_ID] = { .name = "id", .type = BLOBMSG_TYPE_INT32 },
        [HELLO_MSG] = { .name = "msg", .type = BLOBMSG_TYPE_STRING },
}

Definition at line 21 of file server.c.

test_event

struct ubus_subscriber test_event

static

Definition at line 21 of file server.c.

test_methods

const struct ubus_method test_methods[]

static

Initial value:

= {
        UBUS_METHOD("hello", test_hello, hello_policy),
        UBUS_METHOD("watch", test_watch, watch_policy),
        UBUS_METHOD("count", test_count, count_policy),
}

Definition at line 171 of file server.c.

test_object

struct ubus_object test_object

static

Initial value:

= {
        .name = "test",
        .type = &test_object_type,
        .methods = test_methods,
        .n_methods = ARRAY_SIZE(test_methods),
}

Definition at line 171 of file server.c.

test_object_type

struct ubus_object_type test_object_type

static

Initial value:

=
        UBUS_OBJECT_TYPE("test", test_methods)

Definition at line 171 of file server.c.

watch_policy

const struct blobmsg_policy watch_policy[__WATCH_MAX]

static

Initial value:

= {
        [WATCH_ID] = { .name = "id", .type = BLOBMSG_TYPE_INT32 },
        [WATCH_COUNTER] = { .name = "counter", .type = BLOBMSG_TYPE_INT32 },
}

Definition at line 81 of file server.c.