X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=http_recv.c;h=3a723299e78b241a9ac4f44a13caf91651f36b6a;hp=5717692ce2133e548fee68552787cd89c9c69fc0;hb=ebbea4043aa7c7f200e4f56c3bfa42f5c31f2e03;hpb=d7b4aa3835197ee906f13f515040e1cda6385544 diff --git a/http_recv.c b/http_recv.c index 5717692c..3a723299 100644 --- a/http_recv.c +++ b/http_recv.c @@ -1,31 +1,32 @@ -/* - * Copyright (C) 2005-2011 Andre Noll - * - * Licensed under the GPL v2. For licencing details see COPYING. - */ +/* Copyright (C) 2005 Andre Noll , see file COPYING. */ /** \file http_recv.c paraslash's http receiver */ #include +#include +#include #include +#include +#include +#include +#include +#include "recv_cmd.lsg.h" #include "para.h" #include "error.h" #include "http.h" #include "list.h" #include "sched.h" -#include "ggo.h" +#include "buffer_tree.h" #include "recv.h" -#include "http_recv.cmdline.h" #include "net.h" #include "string.h" #include "fd.h" -#include "buffer_tree.h" /** * the possible states of a http receiver node * - * \sa receiver_node + * \sa \ref receiver_node. */ enum http_recv_status {HTTP_CONNECTED, HTTP_SENT_GET_REQUEST, HTTP_STREAMING}; @@ -41,27 +42,9 @@ struct private_http_recv_data { * It gets initialized to \p HTTP_CONNECTED by the open function of the * http receiver. * - * \sa receiver::open, receiver_node. + * \sa \ref receiver::open, \ref receiver_node. */ enum http_recv_status status; - /** - * The file descriptor used for receiving the http stream. - * - * The pre_select function of the http receiver adds this file descriptor to - * the set of file descriptors which are checked for reading/writing (depending - * on the current status) by the select loop of the application (para_audiod or - * para_recv). - * - * The post_select function of the http receiver uses \a fd, if ready, to - * establish the http connection, and updates \a status according to the new - * state of the connection. As soon as \a status is \p HTTP_STREAMING, \a fd is - * going to be only checked for reading. If data is available, it is read into - * the output buffer of the receiver node by post_select. - * - * \sa receiver::pre_select receiver::post_select receiver_node, http_recv_status - */ - int fd; - struct btr_pool *btrp; }; static char *make_request_msg(void) @@ -73,97 +56,101 @@ static char *make_request_msg(void) return ret; } -static void http_recv_pre_select(struct sched *s, struct task *t) +static void http_recv_pre_select(struct sched *s, void *context) { - struct receiver_node *rn = container_of(t, struct receiver_node, task); + struct receiver_node *rn = context; struct private_http_recv_data *phd = rn->private_data; - t->error = 0; - if (generic_recv_pre_select(s, t) <= 0) + if (generic_recv_pre_select(s, rn) <= 0) return; if (phd->status == HTTP_CONNECTED) - para_fd_set(phd->fd, &s->wfds, &s->max_fileno); + para_fd_set(rn->fd, &s->wfds, &s->max_fileno); else - para_fd_set(phd->fd, &s->rfds, &s->max_fileno); + para_fd_set(rn->fd, &s->rfds, &s->max_fileno); } -static void http_recv_post_select(struct sched *s, struct task *t) +/* + * Establish the http connection. If already established, fill the buffer pool + * area with data read from the socket. In any case, update the state of the + * connection if necessary. + */ +static int http_recv_post_select(struct sched *s, void *context) { - struct receiver_node *rn = container_of(t, struct receiver_node, task); + struct receiver_node *rn = context; struct private_http_recv_data *phd = rn->private_data; struct btr_node *btrn = rn->btrn; - int ret; - char *buf; - size_t sz, n; + int ret, iovcnt; + struct iovec iov[2]; + size_t num_bytes; - t->error = 0; + ret = task_get_notification(rn->task); + if (ret < 0) + goto out; ret = btr_node_status(btrn, 0, BTR_NT_ROOT); if (ret < 0) - goto err; + goto out; if (ret == 0) - return; + return 0; if (phd->status == HTTP_CONNECTED) { char *rq; - if (!FD_ISSET(phd->fd, &s->wfds)) - return; + if (!FD_ISSET(rn->fd, &s->wfds)) + return 0; rq = make_request_msg(); PARA_INFO_LOG("sending http request\n"); - ret = send_va_buffer(phd->fd, "%s", rq); + ret = write_va_buffer(rn->fd, "%s", rq); free(rq); if (ret < 0) - goto err; + goto out; phd->status = HTTP_SENT_GET_REQUEST; - return; + return 0; } if (phd->status == HTTP_SENT_GET_REQUEST) { - ret = read_pattern(phd->fd, HTTP_OK_MSG, strlen(HTTP_OK_MSG), &s->rfds); - if (ret < 0) - goto err; + ret = read_pattern(rn->fd, HTTP_OK_MSG, strlen(HTTP_OK_MSG), &s->rfds); + if (ret < 0) { + PARA_ERROR_LOG("did not receive HTTP OK message\n"); + goto out; + } if (ret == 0) - return; + return 0; PARA_INFO_LOG("received ok msg, streaming\n"); phd->status = HTTP_STREAMING; - return; + return 0; } ret = -E_HTTP_RECV_OVERRUN; - sz = btr_pool_get_buffer(phd->btrp, &buf); - if (sz == 0) - goto err; - ret = read_nonblock(phd->fd, buf, sz, &s->rfds, &n); - if (n > 0) - btr_add_output_pool(phd->btrp, n, btrn); - if (ret >= 0) - return; -err: - btr_remove_node(rn->btrn); - t->error = ret; + iovcnt = btr_pool_get_buffers(rn->btrp, iov); + if (iovcnt == 0) + goto out; + ret = readv_nonblock(rn->fd, iov, iovcnt, &s->rfds, &num_bytes); + if (num_bytes == 0) + goto out; + if (num_bytes <= iov[0].iov_len) /* only the first buffer was filled */ + btr_add_output_pool(rn->btrp, num_bytes, btrn); + else { /* both buffers contain data */ + btr_add_output_pool(rn->btrp, iov[0].iov_len, btrn); + btr_add_output_pool(rn->btrp, num_bytes - iov[0].iov_len, btrn); + } +out: + if (ret < 0) { + PARA_NOTICE_LOG("%s\n", para_strerror(-ret)); + btr_remove_node(&rn->btrn); + } + return ret; } static void http_recv_close(struct receiver_node *rn) { - struct private_http_recv_data *phd = rn->private_data; - - close(phd->fd); - btr_pool_free(phd->btrp); + close(rn->fd); + btr_pool_free(rn->btrp); free(rn->private_data); } -static void *http_recv_parse_config(int argc, char **argv) -{ - struct http_recv_args_info *tmp = para_calloc(sizeof(struct http_recv_args_info)); - - if (!http_recv_cmdline_parser(argc, argv, tmp)) - return tmp; - free(tmp); - return NULL; -} - static int http_recv_open(struct receiver_node *rn) { struct private_http_recv_data *phd; - struct http_recv_args_info *conf = rn->conf; - int fd, ret = para_connect_simple(IPPROTO_TCP, conf->host_arg, - conf->port_arg); + struct lls_parse_result *lpr = rn->lpr; + const char *r_i = RECV_CMD_OPT_STRING_VAL(HTTP, HOST, lpr); + uint32_t r_p = RECV_CMD_OPT_UINT32_VAL(HTTP, PORT, lpr); + int fd, ret = para_connect_simple(IPPROTO_TCP, r_i, r_p); if (ret < 0) return ret; @@ -174,39 +161,16 @@ static int http_recv_open(struct receiver_node *rn) return ret; } rn->private_data = phd = para_calloc(sizeof(struct private_http_recv_data)); - phd->fd = fd; + rn->fd = fd; phd->status = HTTP_CONNECTED; - phd->btrp = btr_pool_new("http_recv", 320 * 1024); + rn->btrp = btr_pool_new("http_recv", 320 * 1024); return 1; } -static void http_recv_free_config(void *conf) -{ - http_recv_cmdline_parser_free(conf); - free(conf); -} - -/** - * The init function of the http receiver. - * - * \param r Pointer to the receiver struct to initialize. - * - * This initializes all function pointers of \a r. - */ -void http_recv_init(struct receiver *r) -{ - struct http_recv_args_info dummy; - - http_recv_cmdline_parser_init(&dummy); - r->open = http_recv_open; - r->close = http_recv_close; - r->pre_select = http_recv_pre_select; - r->post_select = http_recv_post_select; - r->parse_config = http_recv_parse_config; - r->free_config = http_recv_free_config; - r->help = (struct ggo_help) { - .short_help = http_recv_args_info_help, - .detailed_help = http_recv_args_info_detailed_help - }; - http_recv_cmdline_parser_free(&dummy); -} +/** See \ref recv_init(). */ +const struct receiver lsg_recv_cmd_com_http_user_data = { + .open = http_recv_open, + .close = http_recv_close, + .pre_select = http_recv_pre_select, + .post_select = http_recv_post_select, +};