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Diffstat (limited to 'plugins/FTPFileYM/curl/docs/examples/evhiperfifo.c')
-rw-r--r-- | plugins/FTPFileYM/curl/docs/examples/evhiperfifo.c | 442 |
1 files changed, 0 insertions, 442 deletions
diff --git a/plugins/FTPFileYM/curl/docs/examples/evhiperfifo.c b/plugins/FTPFileYM/curl/docs/examples/evhiperfifo.c deleted file mode 100644 index c2e87fcc56..0000000000 --- a/plugins/FTPFileYM/curl/docs/examples/evhiperfifo.c +++ /dev/null @@ -1,442 +0,0 @@ -/*************************************************************************** - * _ _ ____ _ - * Project ___| | | | _ \| | - * / __| | | | |_) | | - * | (__| |_| | _ <| |___ - * \___|\___/|_| \_\_____| - * - * Copyright (C) 1998 - 2012, Daniel Stenberg, <daniel@haxx.se>, et al. - * - * This software is licensed as described in the file COPYING, which - * you should have received as part of this distribution. The terms - * are also available at http://curl.haxx.se/docs/copyright.html. - * - * You may opt to use, copy, modify, merge, publish, distribute and/or sell - * copies of the Software, and permit persons to whom the Software is - * furnished to do so, under the terms of the COPYING file. - * - * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY - * KIND, either express or implied. - * - ***************************************************************************/ -/* Example application source code using the multi socket interface to - * download many files at once. - * - * This example features the same basic functionality as hiperfifo.c does, - * but this uses libev instead of libevent. - * - * Written by Jeff Pohlmeyer, converted to use libev by Markus Koetter - -Requires libev and a (POSIX?) system that has mkfifo(). - -This is an adaptation of libcurl's "hipev.c" and libevent's "event-test.c" -sample programs. - -When running, the program creates the named pipe "hiper.fifo" - -Whenever there is input into the fifo, the program reads the input as a list -of URL's and creates some new easy handles to fetch each URL via the -curl_multi "hiper" API. - - -Thus, you can try a single URL: - % echo http://www.yahoo.com > hiper.fifo - -Or a whole bunch of them: - % cat my-url-list > hiper.fifo - -The fifo buffer is handled almost instantly, so you can even add more URL's -while the previous requests are still being downloaded. - -Note: - For the sake of simplicity, URL length is limited to 1023 char's ! - -This is purely a demo app, all retrieved data is simply discarded by the write -callback. - -*/ - -#include <stdio.h> -#include <string.h> -#include <stdlib.h> -#include <sys/time.h> -#include <time.h> -#include <unistd.h> -#include <sys/poll.h> -#include <curl/curl.h> -#include <ev.h> -#include <fcntl.h> -#include <sys/stat.h> -#include <errno.h> - -#define DPRINT(x...) printf(x) - -#define MSG_OUT stdout /* Send info to stdout, change to stderr if you want */ - - -/* Global information, common to all connections */ -typedef struct _GlobalInfo -{ - struct ev_loop *loop; - struct ev_io fifo_event; - struct ev_timer timer_event; - CURLM *multi; - int still_running; - FILE* input; -} GlobalInfo; - - -/* Information associated with a specific easy handle */ -typedef struct _ConnInfo -{ - CURL *easy; - char *url; - GlobalInfo *global; - char error[CURL_ERROR_SIZE]; -} ConnInfo; - - -/* Information associated with a specific socket */ -typedef struct _SockInfo -{ - curl_socket_t sockfd; - CURL *easy; - int action; - long timeout; - struct ev_io ev; - int evset; - GlobalInfo *global; -} SockInfo; - -static void timer_cb(EV_P_ struct ev_timer *w, int revents); - -/* Update the event timer after curl_multi library calls */ -static int multi_timer_cb(CURLM *multi, long timeout_ms, GlobalInfo *g) -{ - DPRINT("%s %li\n", __PRETTY_FUNCTION__, timeout_ms); - ev_timer_stop(g->loop, &g->timer_event); - if (timeout_ms > 0) - { - double t = timeout_ms / 1000; - ev_timer_init(&g->timer_event, timer_cb, t, 0.); - ev_timer_start(g->loop, &g->timer_event); - }else - timer_cb(g->loop, &g->timer_event, 0); - return 0; -} - -/* Die if we get a bad CURLMcode somewhere */ -static void mcode_or_die(const char *where, CURLMcode code) -{ - if ( CURLM_OK != code ) - { - const char *s; - switch ( code ) - { - case CURLM_CALL_MULTI_PERFORM: s="CURLM_CALL_MULTI_PERFORM"; break; - case CURLM_BAD_HANDLE: s="CURLM_BAD_HANDLE"; break; - case CURLM_BAD_EASY_HANDLE: s="CURLM_BAD_EASY_HANDLE"; break; - case CURLM_OUT_OF_MEMORY: s="CURLM_OUT_OF_MEMORY"; break; - case CURLM_INTERNAL_ERROR: s="CURLM_INTERNAL_ERROR"; break; - case CURLM_UNKNOWN_OPTION: s="CURLM_UNKNOWN_OPTION"; break; - case CURLM_LAST: s="CURLM_LAST"; break; - default: s="CURLM_unknown"; - break; - case CURLM_BAD_SOCKET: s="CURLM_BAD_SOCKET"; - fprintf(MSG_OUT, "ERROR: %s returns %s\n", where, s); - /* ignore this error */ - return; - } - fprintf(MSG_OUT, "ERROR: %s returns %s\n", where, s); - exit(code); - } -} - - - -/* Check for completed transfers, and remove their easy handles */ -static void check_multi_info(GlobalInfo *g) -{ - char *eff_url; - CURLMsg *msg; - int msgs_left; - ConnInfo *conn; - CURL *easy; - CURLcode res; - - fprintf(MSG_OUT, "REMAINING: %d\n", g->still_running); - while ((msg = curl_multi_info_read(g->multi, &msgs_left))) { - if (msg->msg == CURLMSG_DONE) { - easy = msg->easy_handle; - res = msg->data.result; - curl_easy_getinfo(easy, CURLINFO_PRIVATE, &conn); - curl_easy_getinfo(easy, CURLINFO_EFFECTIVE_URL, &eff_url); - fprintf(MSG_OUT, "DONE: %s => (%d) %s\n", eff_url, res, conn->error); - curl_multi_remove_handle(g->multi, easy); - free(conn->url); - curl_easy_cleanup(easy); - free(conn); - } - } -} - - - -/* Called by libevent when we get action on a multi socket */ -static void event_cb(EV_P_ struct ev_io *w, int revents) -{ - DPRINT("%s w %p revents %i\n", __PRETTY_FUNCTION__, w, revents); - GlobalInfo *g = (GlobalInfo*) w->data; - CURLMcode rc; - - int action = (revents&EV_READ?CURL_POLL_IN:0)| - (revents&EV_WRITE?CURL_POLL_OUT:0); - rc = curl_multi_socket_action(g->multi, w->fd, action, &g->still_running); - mcode_or_die("event_cb: curl_multi_socket_action", rc); - check_multi_info(g); - if ( g->still_running <= 0 ) - { - fprintf(MSG_OUT, "last transfer done, kill timeout\n"); - ev_timer_stop(g->loop, &g->timer_event); - } -} - -/* Called by libevent when our timeout expires */ -static void timer_cb(EV_P_ struct ev_timer *w, int revents) -{ - DPRINT("%s w %p revents %i\n", __PRETTY_FUNCTION__, w, revents); - - GlobalInfo *g = (GlobalInfo *)w->data; - CURLMcode rc; - - rc = curl_multi_socket_action(g->multi, CURL_SOCKET_TIMEOUT, 0, &g->still_running); - mcode_or_die("timer_cb: curl_multi_socket_action", rc); - check_multi_info(g); -} - -/* Clean up the SockInfo structure */ -static void remsock(SockInfo *f, GlobalInfo *g) -{ - printf("%s \n", __PRETTY_FUNCTION__); - if ( f ) - { - if ( f->evset ) - ev_io_stop(g->loop, &f->ev); - free(f); - } -} - - - -/* Assign information to a SockInfo structure */ -static void setsock(SockInfo*f, curl_socket_t s, CURL*e, int act, GlobalInfo*g) -{ - printf("%s \n", __PRETTY_FUNCTION__); - - int kind = (act&CURL_POLL_IN?EV_READ:0)|(act&CURL_POLL_OUT?EV_WRITE:0); - - f->sockfd = s; - f->action = act; - f->easy = e; - if ( f->evset ) - ev_io_stop(g->loop, &f->ev); - ev_io_init(&f->ev, event_cb, f->sockfd, kind); - f->ev.data = g; - f->evset=1; - ev_io_start(g->loop, &f->ev); -} - - - -/* Initialize a new SockInfo structure */ -static void addsock(curl_socket_t s, CURL *easy, int action, GlobalInfo *g) -{ - SockInfo *fdp = calloc(sizeof(SockInfo), 1); - - fdp->global = g; - setsock(fdp, s, easy, action, g); - curl_multi_assign(g->multi, s, fdp); -} - -/* CURLMOPT_SOCKETFUNCTION */ -static int sock_cb(CURL *e, curl_socket_t s, int what, void *cbp, void *sockp) -{ - DPRINT("%s e %p s %i what %i cbp %p sockp %p\n", - __PRETTY_FUNCTION__, e, s, what, cbp, sockp); - - GlobalInfo *g = (GlobalInfo*) cbp; - SockInfo *fdp = (SockInfo*) sockp; - const char *whatstr[]={ "none", "IN", "OUT", "INOUT", "REMOVE"}; - - fprintf(MSG_OUT, - "socket callback: s=%d e=%p what=%s ", s, e, whatstr[what]); - if ( what == CURL_POLL_REMOVE ) - { - fprintf(MSG_OUT, "\n"); - remsock(fdp, g); - } else - { - if ( !fdp ) - { - fprintf(MSG_OUT, "Adding data: %s\n", whatstr[what]); - addsock(s, e, what, g); - } else - { - fprintf(MSG_OUT, - "Changing action from %s to %s\n", - whatstr[fdp->action], whatstr[what]); - setsock(fdp, s, e, what, g); - } - } - return 0; -} - - -/* CURLOPT_WRITEFUNCTION */ -static size_t write_cb(void *ptr, size_t size, size_t nmemb, void *data) -{ - size_t realsize = size * nmemb; - ConnInfo *conn = (ConnInfo*) data; - (void)ptr; - (void)conn; - return realsize; -} - - -/* CURLOPT_PROGRESSFUNCTION */ -static int prog_cb (void *p, double dltotal, double dlnow, double ult, - double uln) -{ - ConnInfo *conn = (ConnInfo *)p; - (void)ult; - (void)uln; - - fprintf(MSG_OUT, "Progress: %s (%g/%g)\n", conn->url, dlnow, dltotal); - return 0; -} - - -/* Create a new easy handle, and add it to the global curl_multi */ -static void new_conn(char *url, GlobalInfo *g ) -{ - ConnInfo *conn; - CURLMcode rc; - - conn = calloc(1, sizeof(ConnInfo)); - memset(conn, 0, sizeof(ConnInfo)); - conn->error[0]='\0'; - - conn->easy = curl_easy_init(); - if ( !conn->easy ) - { - fprintf(MSG_OUT, "curl_easy_init() failed, exiting!\n"); - exit(2); - } - conn->global = g; - conn->url = strdup(url); - curl_easy_setopt(conn->easy, CURLOPT_URL, conn->url); - curl_easy_setopt(conn->easy, CURLOPT_WRITEFUNCTION, write_cb); - curl_easy_setopt(conn->easy, CURLOPT_WRITEDATA, conn); - curl_easy_setopt(conn->easy, CURLOPT_VERBOSE, 1L); - curl_easy_setopt(conn->easy, CURLOPT_ERRORBUFFER, conn->error); - curl_easy_setopt(conn->easy, CURLOPT_PRIVATE, conn); - curl_easy_setopt(conn->easy, CURLOPT_NOPROGRESS, 0L); - curl_easy_setopt(conn->easy, CURLOPT_PROGRESSFUNCTION, prog_cb); - curl_easy_setopt(conn->easy, CURLOPT_PROGRESSDATA, conn); - curl_easy_setopt(conn->easy, CURLOPT_LOW_SPEED_TIME, 3L); - curl_easy_setopt(conn->easy, CURLOPT_LOW_SPEED_LIMIT, 10L); - - fprintf(MSG_OUT, - "Adding easy %p to multi %p (%s)\n", conn->easy, g->multi, url); - rc = curl_multi_add_handle(g->multi, conn->easy); - mcode_or_die("new_conn: curl_multi_add_handle", rc); - - /* note that the add_handle() will set a time-out to trigger very soon so - that the necessary socket_action() call will be called by this app */ -} - -/* This gets called whenever data is received from the fifo */ -static void fifo_cb(EV_P_ struct ev_io *w, int revents) -{ - char s[1024]; - long int rv=0; - int n=0; - GlobalInfo *g = (GlobalInfo *)w->data; - - do - { - s[0]='\0'; - rv=fscanf(g->input, "%1023s%n", s, &n); - s[n]='\0'; - if ( n && s[0] ) - { - new_conn(s,g); /* if we read a URL, go get it! */ - } else break; - } while ( rv != EOF ); -} - -/* Create a named pipe and tell libevent to monitor it */ -static int init_fifo (GlobalInfo *g) -{ - struct stat st; - static const char *fifo = "hiper.fifo"; - curl_socket_t sockfd; - - fprintf(MSG_OUT, "Creating named pipe \"%s\"\n", fifo); - if ( lstat (fifo, &st) == 0 ) - { - if ( (st.st_mode & S_IFMT) == S_IFREG ) - { - errno = EEXIST; - perror("lstat"); - exit (1); - } - } - unlink(fifo); - if ( mkfifo (fifo, 0600) == -1 ) - { - perror("mkfifo"); - exit (1); - } - sockfd = open(fifo, O_RDWR | O_NONBLOCK, 0); - if ( sockfd == -1 ) - { - perror("open"); - exit (1); - } - g->input = fdopen(sockfd, "r"); - - fprintf(MSG_OUT, "Now, pipe some URL's into > %s\n", fifo); - ev_io_init(&g->fifo_event, fifo_cb, sockfd, EV_READ); - ev_io_start(g->loop, &g->fifo_event); - return(0); -} - -int main(int argc, char **argv) -{ - GlobalInfo g; - CURLMcode rc; - (void)argc; - (void)argv; - - memset(&g, 0, sizeof(GlobalInfo)); - g.loop = ev_default_loop(0); - - init_fifo(&g); - g.multi = curl_multi_init(); - - ev_timer_init(&g.timer_event, timer_cb, 0., 0.); - g.timer_event.data = &g; - g.fifo_event.data = &g; - curl_multi_setopt(g.multi, CURLMOPT_SOCKETFUNCTION, sock_cb); - curl_multi_setopt(g.multi, CURLMOPT_SOCKETDATA, &g); - curl_multi_setopt(g.multi, CURLMOPT_TIMERFUNCTION, multi_timer_cb); - curl_multi_setopt(g.multi, CURLMOPT_TIMERDATA, &g); - - /* we don't call any curl_multi_socket*() function yet as we have no handles - added! */ - - ev_loop(g.loop, 0); - curl_multi_cleanup(g.multi); - return 0; -} |