#include "server.h"
#include "http.h"
#include "vss.h"
-#include "send.h"
#include "list.h"
+#include "send.h"
#include "close_on_fork.h"
#include "net.h"
#include "fd.h"
HTTP_CONNECTED,
/** Successfully received the get request. */
HTTP_GOT_GET_REQUEST,
- /** We sent the OK message back to the client. */
- HTTP_SENT_OK_MSG,
- /** Connection established, we might need to send the audio file header. */
- HTTP_READY_TO_STREAM,
/** Connection is ready for sending audio data. */
HTTP_STREAMING,
/** We didn't receive a valid get request. */
/** The whitelist/blacklist. */
static struct list_head http_acl;
-/** Describes one client that connected the tcp port of the http sender. */
-struct http_client {
- /** The file descriptor of the client. */
- int fd;
- /** The socket `name' of the client. */
- char *name;
- /** The client's current status. */
- enum http_status status;
- /** Non-zero if we included \a fd in the read set.*/
- int check_r;
- /** Non-zero if we included \a fd in the write set. */
- int check_w;
- /** The position of this client in the client list. */
- struct list_head node;
- /** The list of pending chunks for this client. */
- struct chunk_queue *cq;
-};
-
static int listen_fd = -1, numclients;
-static struct sender *self;
-
-
-static void http_shutdown_client(struct http_client *hc, const char *msg)
-{
- PARA_INFO_LOG("shutting down %s on fd %d (%s)\n", hc->name, hc->fd,
- msg);
- numclients--;
- free(hc->name);
- close(hc->fd);
- del_close_on_fork_list(hc->fd);
- cq_destroy(hc->cq);
- list_del(&hc->node);
- free(hc);
-}
-static void http_shutdown_clients(void)
-{
- struct http_client *hc, *tmp;
- list_for_each_entry_safe(hc, tmp, &clients, node)
- http_shutdown_client(hc, "vss request");
-}
+struct private_http_sender_data {
+ enum http_status status;
+};
-static int http_send_msg(struct http_client *hc, const char *msg)
+static int http_send_msg(struct sender_client *sc, const char *msg)
{
- int ret = send_buffer(hc->fd, msg);
+ int ret = send_buffer(sc->fd, msg);
if (ret < 0)
- http_shutdown_client(hc, "send msg failed");
+ shutdown_client(sc);
return ret;
}
-static void http_send_ok_msg(struct http_client *hc)
+static void http_send_ok_msg(struct sender_client *sc)
{
- PARA_INFO_LOG("sending http ok message to fd %d\n", hc->fd);
- http_send_msg(hc, HTTP_OK_MSG);
+ PARA_INFO_LOG("sending http ok message to fd %d\n", sc->fd);
+ http_send_msg(sc, HTTP_OK_MSG);
}
-static int http_send_err_msg(struct http_client *hc)
+static int http_send_err_msg(struct sender_client *sc)
{
- PARA_NOTICE_LOG("sending bad request message to fd %d\n", hc->fd);
- return http_send_msg(hc, HTTP_ERR_MSG);
+ PARA_NOTICE_LOG("sending bad request message to fd %d\n", sc->fd);
+ return http_send_msg(sc, HTTP_ERR_MSG);
}
-/*
- * ret: Negative on errors, zero if nothing was written and write returned
- * EAGAIN, number of bytes written else.
- */
-static int http_write(int fd, const char *buf, size_t len)
-{
- size_t written = 0;
-
- while (written < len) {
- int ret = write(fd, buf + written, len - written);
- if (ret < 0 && errno == EAGAIN)
- return written;
- if (ret < 0)
- return -ERRNO_TO_PARA_ERROR(errno);
- written += ret;
- }
- return written;
-}
-
-
-static int send_queued_chunks(struct http_client *hc)
-{
- struct queued_chunk *qc;
- while ((qc = cq_peek(hc->cq))) {
- char *buf;
- size_t len;
- int ret;
- cq_get(qc, &buf, &len);
- ret = http_write(hc->fd, buf, len);
- if (ret < 0)
- return ret;
- cq_update(hc->cq, ret);
- if (ret != len)
- return 1;
- cq_dequeue(hc->cq);
- }
- return 1;
-}
-
-static int queue_chunk_or_shutdown(struct http_client *hc, long unsigned chunk_num,
- size_t sent)
+static void http_shutdown_clients(void)
{
- int ret = cq_enqueue(hc->cq, chunk_num, sent);
- if (ret < 0)
- http_shutdown_client(hc, "queue error");
- return ret;
+ struct sender_client *sc, *tmp;
+ list_for_each_entry_safe(sc, tmp, &clients, node)
+ shutdown_client(sc);
}
-static void http_send( long unsigned current_chunk,
+static void http_send(long unsigned current_chunk,
__a_unused long unsigned chunks_sent, const char *buf, size_t len)
{
- struct http_client *hc, *tmp;
- int ret;
+ struct sender_client *sc, *tmp;
- list_for_each_entry_safe(hc, tmp, &clients, node) {
- if (hc->status != HTTP_STREAMING &&
- hc->status != HTTP_READY_TO_STREAM)
- continue;
- if (hc->status == HTTP_READY_TO_STREAM) {
- size_t hlen;
- char *hbuf = vss_get_header(&hlen);
- if (hbuf && hlen > 0 && current_chunk) {
- /* need to send header */
- PARA_INFO_LOG("queueing header: %zu\n", hlen);
- if (queue_chunk_or_shutdown(hc, -1U, 0) < 0)
- continue;
- } else
- PARA_INFO_LOG("no need to queue header\n");
- hc->status = HTTP_STREAMING;
- }
- ret = send_queued_chunks(hc);
- if (ret < 0) {
- http_shutdown_client(hc, "queue send error");
- continue;
- }
- if (!len)
+ list_for_each_entry_safe(sc, tmp, &clients, node) {
+ struct private_http_sender_data *phsd = sc->private_data;
+ if (phsd->status != HTTP_STREAMING)
continue;
- if (!ret || write_ok(hc->fd) <= 0) {
- queue_chunk_or_shutdown(hc, current_chunk, 0);
- continue;
- }
-// PARA_DEBUG_LOG("sending %d -> %s\n", len, remote_name(hc->fd));
- ret = write(hc->fd, buf, len);
-// PARA_DEBUG_LOG("ret: %d\n", ret);
- if (ret < 0) {
- http_shutdown_client(hc, "send error");
- continue;
- }
- if (ret != len)
- queue_chunk_or_shutdown(hc, current_chunk, ret);
+ send_chunk(sc, 0, current_chunk, buf, len);
}
}
-static void http_post_select(fd_set *rfds, fd_set *wfds)
+static void http_post_select(fd_set *rfds, __a_unused fd_set *wfds)
{
- int i = -1, match;
- struct http_client *hc, *tmp;
- const char *err_msg;
+ int ret, match;
+ struct sender_client *sc, *tmp;
+ struct private_http_sender_data *phsd;
if (listen_fd < 0)
return;
- list_for_each_entry_safe(hc, tmp, &clients, node) {
- i++;
-// PARA_DEBUG_LOG("handling client %d: %s\n", i, remote_name(hc->fd));
- switch (hc->status) {
+ list_for_each_entry_safe(sc, tmp, &clients, node) {
+ phsd = sc->private_data;
+ switch (phsd->status) {
case HTTP_STREAMING: /* nothing to do */
- case HTTP_READY_TO_STREAM:
break;
case HTTP_CONNECTED: /* need to recv get request */
- if (hc->check_r && FD_ISSET(hc->fd, rfds)) {
- if (recv_pattern(hc->fd, HTTP_GET_MSG, MAXLINE)
+ if (FD_ISSET(sc->fd, rfds)) {
+ if (recv_pattern(sc->fd, HTTP_GET_MSG, MAXLINE)
< 0) {
- hc->status = HTTP_INVALID_GET_REQUEST;
+ phsd->status = HTTP_INVALID_GET_REQUEST;
} else {
- hc->status = HTTP_GOT_GET_REQUEST;
+ phsd->status = HTTP_GOT_GET_REQUEST;
PARA_INFO_LOG("%s",
"received get request\n");
}
}
break;
case HTTP_GOT_GET_REQUEST: /* need to send ok msg */
- if (hc->check_w && FD_ISSET(hc->fd, wfds)) {
- hc->status = HTTP_SENT_OK_MSG;
- http_send_ok_msg(hc);
- }
+ phsd->status = HTTP_STREAMING;
+ http_send_ok_msg(sc);
break;
case HTTP_INVALID_GET_REQUEST: /* need to send err msg */
- if (hc->check_w && FD_ISSET(hc->fd, wfds)) {
- if (http_send_err_msg(hc) >= 0)
- http_shutdown_client(hc,
- "invalid get request");
- }
- break;
- case HTTP_SENT_OK_MSG: /* need to send header? */
- if (hc->check_w && FD_ISSET(hc->fd, wfds))
- hc->status = HTTP_READY_TO_STREAM;
+ if (http_send_err_msg(sc) >= 0)
+ shutdown_client(sc);
break;
}
}
if (!FD_ISSET(listen_fd, rfds))
return;
- hc = para_calloc(sizeof(struct http_client));
- err_msg = "accept error";
- hc->fd = para_accept(listen_fd, NULL, 0);
- if (hc->fd <= 0)
- goto err_out;
- hc->name = make_message("%s", remote_name(hc->fd));
- PARA_NOTICE_LOG("connection from %s (fd %d)\n", hc->name, hc->fd);
+ ret = para_accept(listen_fd, NULL, 0);
+ if (ret < 0) {
+ PARA_ERROR_LOG("%s\n", para_strerror(-ret));
+ return;
+ }
+ sc = para_calloc(sizeof(*sc));
+ sc->fd = ret;
+ sc->name = make_message("%s", remote_name(sc->fd));
+ PARA_NOTICE_LOG("connection from %s (fd %d)\n", sc->name, sc->fd);
+ ret = -E_MAX_CLIENTS;
if (conf.http_max_clients_arg > 0 && numclients >=
conf.http_max_clients_arg) {
- err_msg = "server full";
goto err_out;
}
- match = acl_lookup(hc->fd, &http_acl);
+ match = acl_lookup(sc->fd, &http_acl);
PARA_DEBUG_LOG("acl lookup returned %d\n", match);
+ ret = -E_ACL_PERM;
if ((match && !conf.http_default_deny_given) ||
- (!match && conf.http_default_deny_given)) {
- err_msg = "permission denied";
+ (!match && conf.http_default_deny_given))
goto err_out;
- }
- err_msg = "failed to mark fd non-blocking";
- if (mark_fd_nonblocking(hc->fd) < 0)
+ ret = mark_fd_nonblocking(sc->fd);
+ if (ret < 0)
goto err_out;
- hc->status = HTTP_CONNECTED;
- hc->cq = cq_new(MAX_BACKLOG);
+ phsd = para_malloc(sizeof(*phsd));
+ sc->private_data = phsd;
+ phsd->status = HTTP_CONNECTED;
+ sc->cq = cq_new(MAX_BACKLOG);
numclients++;
PARA_INFO_LOG("accepted client #%d: %s (fd %d)\n", numclients,
- hc->name, hc->fd);
- para_list_add(&hc->node, &clients);
- add_close_on_fork_list(hc->fd);
+ sc->name, sc->fd);
+ para_list_add(&sc->node, &clients);
+ add_close_on_fork_list(sc->fd);
return;
err_out:
- PARA_WARNING_LOG("ignoring connect request from %s (%s)\n",
- hc->name, err_msg);
- if (hc->fd > 0)
- close(hc->fd);
- free(hc);
+ PARA_WARNING_LOG("%s\n", para_strerror(-ret));
+ close(sc->fd);
+ free(sc);
}
-static void http_pre_select(int *max_fileno, fd_set *rfds, fd_set *wfds)
+static void http_pre_select(int *max_fileno, fd_set *rfds, __a_unused fd_set *wfds)
{
- struct http_client *hc, *tmp;
+ struct sender_client *sc, *tmp;
if (listen_fd < 0)
return;
para_fd_set(listen_fd, rfds, max_fileno);
- list_for_each_entry_safe(hc, tmp, &clients, node) {
- //PARA_DEBUG_LOG("hc %p on fd %d: status %d\n", hc, hc->fd, hc->status);
- hc->check_r = 0;
- hc->check_w = 0;
- switch (hc->status) {
- case HTTP_STREAMING:
- case HTTP_READY_TO_STREAM:
- break;
- case HTTP_CONNECTED: /* need to recv get request */
- para_fd_set(hc->fd, rfds, max_fileno);
- hc->check_r = 1;
- break;
- case HTTP_GOT_GET_REQUEST: /* need to send ok msg */
- case HTTP_INVALID_GET_REQUEST: /* need to send err msg */
- para_fd_set(hc->fd, wfds, max_fileno);
- hc->check_w = 1;
- break;
- case HTTP_SENT_OK_MSG:
- if (!vss_playing())
- break; /* wait until server starts playing */
- para_fd_set(hc->fd, wfds, max_fileno);
- hc->check_w = 1;
- break;
- }
+ list_for_each_entry_safe(sc, tmp, &clients, node) {
+ struct private_http_sender_data *phsd = sc->private_data;
+ if (phsd->status == HTTP_CONNECTED) /* need to recv get request */
+ para_fd_set(sc->fd, rfds, max_fileno);
}
}
-static int http_open(void)
-{
- int ret;
-
- listen_fd = para_listen(AF_UNSPEC, IPPROTO_TCP, conf.http_port_arg);
- if (listen_fd < 0)
- return listen_fd;
- ret = mark_fd_nonblocking(listen_fd);
- if (ret < 0) {
- PARA_EMERG_LOG("%s\n", para_strerror(-ret));
- exit(EXIT_FAILURE);
- }
- add_close_on_fork_list(listen_fd);
- return 1;
-}
-
static int http_com_on(__a_unused struct sender_command_data *scd)
{
if (listen_fd >= 0)
return 1;
- return http_open();
+ return open_sender(IPPROTO_TCP, conf.http_port_arg);
}
static int http_com_off(__a_unused struct sender_command_data *scd)
static char *http_info(void)
{
char *clnts = NULL, *ret;
- struct http_client *hc, *tmp_hc;
+ struct sender_client *sc, *tmp_sc;
char *acl_contents = acl_get_contents(&http_acl);
- list_for_each_entry_safe(hc, tmp_hc, &clients, node) {
- char *tmp = make_message("%s%s ", clnts? clnts : "", hc->name);
+ list_for_each_entry_safe(sc, tmp_sc, &clients, node) {
+ char *tmp = make_message("%s%s ", clnts? clnts : "", sc->name);
free(clnts);
clnts = tmp;
}
*/
void http_send_init(struct sender *s)
{
+ int ret;
INIT_LIST_HEAD(&clients);
s->info = http_info;
s->send = http_send;
s->client_cmds[SENDER_ALLOW] = http_com_allow;
s->client_cmds[SENDER_ADD] = NULL;
s->client_cmds[SENDER_DELETE] = NULL;
- self = s;
acl_init(&http_acl, conf.http_access_arg, conf.http_access_given);
- if (!conf.http_no_autostart_given)
- http_open(); /* ignore errors */
- PARA_DEBUG_LOG("%s", "http sender init complete\n");
+ if (conf.http_no_autostart_given)
+ return;
+ ret = open_sender(IPPROTO_TCP, conf.http_port_arg);
+ if (ret < 0)
+ PARA_ERROR_LOG("%s\n", para_strerror(-ret));
+ else
+ listen_fd = ret;
}
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