1115 lines
25 KiB
C
1115 lines
25 KiB
C
/*-
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* Copyright (c) 1998-2004 Dag-Erling Coïdan Smørgrav
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#if __MOJOSETUP__
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#include "mojosetup_libfetch.h"
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#include <pthread.h>
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#endif
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#if !sun /* __MOJOSETUP__ Solaris support... */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD: src/lib/libfetch/common.c,v 1.50 2005/02/16 12:46:46 des Exp $");
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#endif
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <sys/time.h>
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#include <sys/uio.h>
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#include <netinet/in.h>
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#include <errno.h>
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#include <netdb.h>
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#include <pwd.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include "fetch.h"
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#include "common.h"
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/*** Local data **************************************************************/
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/*
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* Error messages for resolver errors
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*/
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static struct fetcherr _netdb_errlist[] = {
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#ifdef EAI_NODATA
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{ EAI_NODATA, FETCH_RESOLV, "Host not found" },
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#endif
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{ EAI_AGAIN, FETCH_TEMP, "Transient resolver failure" },
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{ EAI_FAIL, FETCH_RESOLV, "Non-recoverable resolver failure" },
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{ EAI_NONAME, FETCH_RESOLV, "No address record" },
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{ -1, FETCH_UNKNOWN, "Unknown resolver error" }
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};
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/* End-of-Line */
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static const char ENDL[2] = "\r\n";
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/*** Error-reporting functions ***********************************************/
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/*
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* Map error code to string
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*/
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static struct fetcherr *
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_fetch_finderr(struct fetcherr *p, int e)
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{
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while (p->num != -1 && p->num != e)
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p++;
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return (p);
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}
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/*
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* Set error code
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*/
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void
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_fetch_seterr(struct fetcherr *p, int e)
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{
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p = _fetch_finderr(p, e);
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fetchLastErrCode = p->cat;
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snprintf(fetchLastErrString, MAXERRSTRING, "%s", p->string);
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}
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/*
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* Set error code according to errno
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*/
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void
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_fetch_syserr(void)
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{
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switch (errno) {
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case 0:
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fetchLastErrCode = FETCH_OK;
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break;
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case EPERM:
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case EACCES:
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case EROFS:
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#if __MOJOSETUP__
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#if FREEBSD
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case EAUTH:
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case ENEEDAUTH:
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#endif
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#endif
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fetchLastErrCode = FETCH_AUTH;
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break;
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case ENOENT:
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case EISDIR: /* XXX */
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fetchLastErrCode = FETCH_UNAVAIL;
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break;
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case ENOMEM:
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fetchLastErrCode = FETCH_MEMORY;
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break;
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case EBUSY:
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case EAGAIN:
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fetchLastErrCode = FETCH_TEMP;
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break;
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case EEXIST:
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fetchLastErrCode = FETCH_EXISTS;
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break;
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case ENOSPC:
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fetchLastErrCode = FETCH_FULL;
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break;
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case EADDRINUSE:
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case EADDRNOTAVAIL:
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case ENETDOWN:
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case ENETUNREACH:
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case ENETRESET:
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case EHOSTUNREACH:
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fetchLastErrCode = FETCH_NETWORK;
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break;
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case ECONNABORTED:
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case ECONNRESET:
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fetchLastErrCode = FETCH_ABORT;
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break;
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case ETIMEDOUT:
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fetchLastErrCode = FETCH_TIMEOUT;
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break;
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case ECONNREFUSED:
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case EHOSTDOWN:
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fetchLastErrCode = FETCH_DOWN;
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break;
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default:
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fetchLastErrCode = FETCH_UNKNOWN;
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}
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snprintf(fetchLastErrString, MAXERRSTRING, "%s", strerror(errno));
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}
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/*
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* Emit status message
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*/
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void
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_fetch_info(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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vfprintf(stderr, fmt, ap);
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va_end(ap);
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fputc('\n', stderr);
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}
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/*** Network-related utility functions ***************************************/
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/*
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* Return the default port for a scheme
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*/
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int
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_fetch_default_port(const char *scheme)
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{
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struct servent *se;
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if ((se = getservbyname(scheme, "tcp")) != NULL)
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return (ntohs(se->s_port));
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if (strcasecmp(scheme, SCHEME_FTP) == 0)
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return (FTP_DEFAULT_PORT);
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if (strcasecmp(scheme, SCHEME_HTTP) == 0)
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return (HTTP_DEFAULT_PORT);
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return (0);
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}
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/*
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* Return the default proxy port for a scheme
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*/
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int
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_fetch_default_proxy_port(const char *scheme)
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{
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if (strcasecmp(scheme, SCHEME_FTP) == 0)
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return (FTP_DEFAULT_PROXY_PORT);
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if (strcasecmp(scheme, SCHEME_HTTP) == 0)
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return (HTTP_DEFAULT_PROXY_PORT);
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return (0);
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}
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/*
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* Create a connection for an existing descriptor.
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*/
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conn_t *
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_fetch_reopen(int sd)
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{
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conn_t *conn;
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/* allocate and fill connection structure */
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if ((conn = calloc(1, sizeof(*conn))) == NULL)
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return (NULL);
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conn->sd = sd;
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++conn->ref;
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return (conn);
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}
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/*
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* Bump a connection's reference count.
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*/
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conn_t *
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_fetch_ref(conn_t *conn)
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{
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++conn->ref;
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return (conn);
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}
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/*
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* Bind a socket to a specific local address
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*/
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int
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_fetch_bind(int sd, int af, const char *addr)
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{
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struct addrinfo hints, *res, *res0;
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int err;
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memset(&hints, 0, sizeof(hints));
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hints.ai_family = af;
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hints.ai_socktype = SOCK_STREAM;
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hints.ai_protocol = 0;
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if ((err = getaddrinfo(addr, NULL, &hints, &res0)) != 0)
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return (-1);
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for (res = res0; res; res = res->ai_next)
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if (bind(sd, res->ai_addr, res->ai_addrlen) == 0)
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return (0);
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return (-1);
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}
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/*
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* Establish a TCP connection to the specified port on the specified host.
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*/
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conn_t *
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_fetch_connect(const char *host, int port, int af, int verbose)
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{
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conn_t *conn;
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char pbuf[10];
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const char *bindaddr;
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struct addrinfo hints, *res, *res0;
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int sd, err;
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DEBUG(fprintf(stderr, "---> %s:%d\n", host, port));
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if (verbose)
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_fetch_info("looking up %s", host);
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/* look up host name and set up socket address structure */
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snprintf(pbuf, sizeof(pbuf), "%d", port);
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memset(&hints, 0, sizeof(hints));
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hints.ai_family = af;
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hints.ai_socktype = SOCK_STREAM;
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hints.ai_protocol = 0;
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if ((err = getaddrinfo(host, pbuf, &hints, &res0)) != 0) {
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_netdb_seterr(err);
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return (NULL);
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}
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bindaddr = getenv("FETCH_BIND_ADDRESS");
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if (verbose)
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_fetch_info("connecting to %s:%d", host, port);
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/* try to connect */
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for (sd = -1, res = res0; res; sd = -1, res = res->ai_next) {
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if ((sd = socket(res->ai_family, res->ai_socktype,
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res->ai_protocol)) == -1)
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continue;
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if (bindaddr != NULL && *bindaddr != '\0' &&
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_fetch_bind(sd, res->ai_family, bindaddr) != 0) {
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_fetch_info("failed to bind to '%s'", bindaddr);
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close(sd);
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continue;
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}
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if (connect(sd, res->ai_addr, res->ai_addrlen) == 0)
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break;
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close(sd);
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}
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freeaddrinfo(res0);
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if (sd == -1) {
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_fetch_syserr();
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return (NULL);
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}
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if ((conn = _fetch_reopen(sd)) == NULL) {
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_fetch_syserr();
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close(sd);
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}
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return (conn);
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}
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/*
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* Enable SSL on a connection.
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*/
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int
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_fetch_ssl(conn_t *conn, int verbose)
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{
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#ifdef WITH_SSL
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/* Init the SSL library and context */
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if (!SSL_library_init()){
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fprintf(stderr, "SSL library init failed\n");
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return (-1);
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}
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SSL_load_error_strings();
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conn->ssl_meth = SSLv23_client_method();
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conn->ssl_ctx = SSL_CTX_new(conn->ssl_meth);
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SSL_CTX_set_mode(conn->ssl_ctx, SSL_MODE_AUTO_RETRY);
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conn->ssl = SSL_new(conn->ssl_ctx);
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if (conn->ssl == NULL){
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fprintf(stderr, "SSL context creation failed\n");
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return (-1);
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}
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SSL_set_fd(conn->ssl, conn->sd);
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if (SSL_connect(conn->ssl) == -1){
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ERR_print_errors_fp(stderr);
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return (-1);
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}
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if (verbose) {
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X509_NAME *name;
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char *str;
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fprintf(stderr, "SSL connection established using %s\n",
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SSL_get_cipher(conn->ssl));
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conn->ssl_cert = SSL_get_peer_certificate(conn->ssl);
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name = X509_get_subject_name(conn->ssl_cert);
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str = X509_NAME_oneline(name, 0, 0);
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printf("Certificate subject: %s\n", str);
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free(str);
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name = X509_get_issuer_name(conn->ssl_cert);
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str = X509_NAME_oneline(name, 0, 0);
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printf("Certificate issuer: %s\n", str);
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free(str);
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}
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return (0);
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#else
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(void)conn;
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(void)verbose;
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fprintf(stderr, "SSL support disabled\n");
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return (-1);
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#endif
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}
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/*
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* Read a character from a connection w/ timeout
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*/
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ssize_t
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_fetch_read(conn_t *conn, char *buf, size_t len)
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{
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struct timeval now, timeout, wait;
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fd_set readfds;
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ssize_t rlen, total;
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int r;
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if (fetchTimeout) {
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FD_ZERO(&readfds);
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gettimeofday(&timeout, NULL);
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timeout.tv_sec += fetchTimeout;
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}
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total = 0;
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while (len > 0) {
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while (fetchTimeout && !FD_ISSET(conn->sd, &readfds)) {
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FD_SET(conn->sd, &readfds);
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gettimeofday(&now, NULL);
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wait.tv_sec = timeout.tv_sec - now.tv_sec;
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wait.tv_usec = timeout.tv_usec - now.tv_usec;
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if (wait.tv_usec < 0) {
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wait.tv_usec += 1000000;
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wait.tv_sec--;
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}
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if (wait.tv_sec < 0) {
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errno = ETIMEDOUT;
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_fetch_syserr();
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return (-1);
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}
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errno = 0;
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r = select(conn->sd + 1, &readfds, NULL, NULL, &wait);
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if (r == -1) {
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if (errno == EINTR && fetchRestartCalls)
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continue;
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_fetch_syserr();
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return (-1);
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}
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}
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#ifdef WITH_SSL
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if (conn->ssl != NULL)
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rlen = SSL_read(conn->ssl, buf, len);
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else
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#endif
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rlen = read(conn->sd, buf, len);
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if (rlen == 0)
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break;
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if (rlen < 0) {
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if (errno == EINTR && fetchRestartCalls)
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continue;
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return (-1);
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}
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len -= rlen;
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buf += rlen;
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total += rlen;
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}
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return (total);
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}
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|
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/*
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* Read a line of text from a connection w/ timeout
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*/
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#define MIN_BUF_SIZE 1024
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int
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_fetch_getln(conn_t *conn)
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{
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char *tmp;
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size_t tmpsize;
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ssize_t len;
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char c;
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if (conn->buf == NULL) {
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if ((conn->buf = malloc(MIN_BUF_SIZE)) == NULL) {
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errno = ENOMEM;
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return (-1);
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}
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conn->bufsize = MIN_BUF_SIZE;
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}
|
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conn->buf[0] = '\0';
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conn->buflen = 0;
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do {
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len = _fetch_read(conn, &c, 1);
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if (len == -1)
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return (-1);
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if (len == 0)
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break;
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conn->buf[conn->buflen++] = c;
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if (conn->buflen == conn->bufsize) {
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tmp = conn->buf;
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tmpsize = conn->bufsize * 2 + 1;
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if ((tmp = realloc(tmp, tmpsize)) == NULL) {
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errno = ENOMEM;
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|
return (-1);
|
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}
|
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conn->buf = tmp;
|
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conn->bufsize = tmpsize;
|
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}
|
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} while (c != '\n');
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|
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conn->buf[conn->buflen] = '\0';
|
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DEBUG(fprintf(stderr, "<<< %s", conn->buf));
|
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return (0);
|
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}
|
|
|
|
|
|
/*
|
|
* Write to a connection w/ timeout
|
|
*/
|
|
ssize_t
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_fetch_write(conn_t *conn, const char *buf, size_t len)
|
|
{
|
|
struct iovec iov;
|
|
|
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iov.iov_base = __DECONST(char *, buf);
|
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iov.iov_len = len;
|
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return _fetch_writev(conn, &iov, 1);
|
|
}
|
|
|
|
/*
|
|
* Write a vector to a connection w/ timeout
|
|
* Note: can modify the iovec.
|
|
*/
|
|
ssize_t
|
|
_fetch_writev(conn_t *conn, struct iovec *iov, int iovcnt)
|
|
{
|
|
struct timeval now, timeout, wait;
|
|
fd_set writefds;
|
|
ssize_t wlen, total;
|
|
int r;
|
|
|
|
if (fetchTimeout) {
|
|
FD_ZERO(&writefds);
|
|
gettimeofday(&timeout, NULL);
|
|
timeout.tv_sec += fetchTimeout;
|
|
}
|
|
|
|
total = 0;
|
|
while (iovcnt > 0) {
|
|
while (fetchTimeout && !FD_ISSET(conn->sd, &writefds)) {
|
|
FD_SET(conn->sd, &writefds);
|
|
gettimeofday(&now, NULL);
|
|
wait.tv_sec = timeout.tv_sec - now.tv_sec;
|
|
wait.tv_usec = timeout.tv_usec - now.tv_usec;
|
|
if (wait.tv_usec < 0) {
|
|
wait.tv_usec += 1000000;
|
|
wait.tv_sec--;
|
|
}
|
|
if (wait.tv_sec < 0) {
|
|
errno = ETIMEDOUT;
|
|
_fetch_syserr();
|
|
return (-1);
|
|
}
|
|
errno = 0;
|
|
r = select(conn->sd + 1, NULL, &writefds, NULL, &wait);
|
|
if (r == -1) {
|
|
if (errno == EINTR && fetchRestartCalls)
|
|
continue;
|
|
return (-1);
|
|
}
|
|
}
|
|
errno = 0;
|
|
#ifdef WITH_SSL
|
|
if (conn->ssl != NULL)
|
|
wlen = SSL_write(conn->ssl,
|
|
iov->iov_base, iov->iov_len);
|
|
else
|
|
#endif
|
|
wlen = writev(conn->sd, iov, iovcnt);
|
|
if (wlen == 0) {
|
|
/* we consider a short write a failure */
|
|
errno = EPIPE;
|
|
_fetch_syserr();
|
|
return (-1);
|
|
}
|
|
if (wlen < 0) {
|
|
if (errno == EINTR && fetchRestartCalls)
|
|
continue;
|
|
return (-1);
|
|
}
|
|
total += wlen;
|
|
while (iovcnt > 0 && wlen >= (ssize_t)iov->iov_len) {
|
|
wlen -= iov->iov_len;
|
|
iov++;
|
|
iovcnt--;
|
|
}
|
|
if (iovcnt > 0) {
|
|
iov->iov_len -= wlen;
|
|
iov->iov_base = __DECONST(char *, iov->iov_base) + wlen;
|
|
}
|
|
}
|
|
return (total);
|
|
}
|
|
|
|
|
|
/*
|
|
* Write a line of text to a connection w/ timeout
|
|
*/
|
|
int
|
|
_fetch_putln(conn_t *conn, const char *str, size_t len)
|
|
{
|
|
struct iovec iov[2];
|
|
int ret;
|
|
|
|
DEBUG(fprintf(stderr, ">>> %s\n", str));
|
|
iov[0].iov_base = __DECONST(char *, str);
|
|
iov[0].iov_len = len;
|
|
iov[1].iov_base = __DECONST(char *, ENDL);
|
|
iov[1].iov_len = sizeof(ENDL);
|
|
if (len == 0)
|
|
ret = _fetch_writev(conn, &iov[1], 1);
|
|
else
|
|
ret = _fetch_writev(conn, iov, 2);
|
|
if (ret == -1)
|
|
return (-1);
|
|
return (0);
|
|
}
|
|
|
|
|
|
/*
|
|
* Close connection
|
|
*/
|
|
int
|
|
_fetch_close(conn_t *conn)
|
|
{
|
|
int ret;
|
|
|
|
if (--conn->ref > 0)
|
|
return (0);
|
|
ret = close(conn->sd);
|
|
free(conn->buf);
|
|
free(conn);
|
|
return (ret);
|
|
}
|
|
|
|
|
|
/*** Directory-related utility functions *************************************/
|
|
|
|
int
|
|
_fetch_add_entry(struct url_ent **p, int *size, int *len,
|
|
const char *name, struct url_stat *us)
|
|
{
|
|
struct url_ent *tmp;
|
|
|
|
if (*p == NULL) {
|
|
*size = 0;
|
|
*len = 0;
|
|
}
|
|
|
|
if (*len >= *size - 1) {
|
|
tmp = realloc(*p, (*size * 2 + 1) * sizeof(**p));
|
|
if (tmp == NULL) {
|
|
errno = ENOMEM;
|
|
_fetch_syserr();
|
|
return (-1);
|
|
}
|
|
*size = (*size * 2 + 1);
|
|
*p = tmp;
|
|
}
|
|
|
|
tmp = *p + *len;
|
|
snprintf(tmp->name, PATH_MAX, "%s", name);
|
|
|
|
#if __MOJOSETUP__
|
|
memmove(&tmp->stat, us, sizeof(*us));
|
|
#else
|
|
bcopy(us, &tmp->stat, sizeof(*us));
|
|
#endif
|
|
|
|
(*len)++;
|
|
(++tmp)->name[0] = 0;
|
|
|
|
return (0);
|
|
}
|
|
|
|
|
|
/*** Authentication-related utility functions ********************************/
|
|
|
|
static const char *
|
|
_fetch_read_word(FILE *f)
|
|
{
|
|
static char word[1024];
|
|
|
|
if (fscanf(f, " %1024s ", word) != 1)
|
|
return (NULL);
|
|
return (word);
|
|
}
|
|
|
|
/*
|
|
* Get authentication data for a URL from .netrc
|
|
*/
|
|
int
|
|
_fetch_netrc_auth(struct url *url)
|
|
{
|
|
char fn[PATH_MAX];
|
|
const char *word;
|
|
char *p;
|
|
FILE *f;
|
|
|
|
if ((p = getenv("NETRC")) != NULL) {
|
|
if (snprintf(fn, sizeof(fn), "%s", p) >= (int)sizeof(fn)) {
|
|
_fetch_info("$NETRC specifies a file name "
|
|
"longer than PATH_MAX");
|
|
return (-1);
|
|
}
|
|
} else {
|
|
if ((p = getenv("HOME")) != NULL) {
|
|
struct passwd *pwd;
|
|
|
|
if ((pwd = getpwuid(getuid())) == NULL ||
|
|
(p = pwd->pw_dir) == NULL)
|
|
return (-1);
|
|
}
|
|
if (snprintf(fn, sizeof(fn), "%s/.netrc", p) >= (int)sizeof(fn))
|
|
return (-1);
|
|
}
|
|
|
|
if ((f = fopen(fn, "r")) == NULL)
|
|
return (-1);
|
|
while ((word = _fetch_read_word(f)) != NULL) {
|
|
if (strcmp(word, "default") == 0) {
|
|
DEBUG(_fetch_info("Using default .netrc settings"));
|
|
break;
|
|
}
|
|
if (strcmp(word, "machine") == 0 &&
|
|
(word = _fetch_read_word(f)) != NULL &&
|
|
strcasecmp(word, url->host) == 0) {
|
|
DEBUG(_fetch_info("Using .netrc settings for %s", word));
|
|
break;
|
|
}
|
|
}
|
|
if (word == NULL)
|
|
goto ferr;
|
|
while ((word = _fetch_read_word(f)) != NULL) {
|
|
if (strcmp(word, "login") == 0) {
|
|
if ((word = _fetch_read_word(f)) == NULL)
|
|
goto ferr;
|
|
if (snprintf(url->user, sizeof(url->user),
|
|
"%s", word) > (int)sizeof(url->user)) {
|
|
_fetch_info("login name in .netrc is too long");
|
|
url->user[0] = '\0';
|
|
}
|
|
} else if (strcmp(word, "password") == 0) {
|
|
if ((word = _fetch_read_word(f)) == NULL)
|
|
goto ferr;
|
|
if (snprintf(url->pwd, sizeof(url->pwd),
|
|
"%s", word) > (int)sizeof(url->pwd)) {
|
|
_fetch_info("password in .netrc is too long");
|
|
url->pwd[0] = '\0';
|
|
}
|
|
} else if (strcmp(word, "account") == 0) {
|
|
if ((word = _fetch_read_word(f)) == NULL)
|
|
goto ferr;
|
|
/* XXX not supported! */
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
fclose(f);
|
|
return (0);
|
|
ferr:
|
|
fclose(f);
|
|
return (-1);
|
|
}
|
|
|
|
#if __MOJOSETUP__
|
|
int MOJOSETUP_vasprintf(char **strp, const char *fmt, va_list ap)
|
|
{
|
|
int len = 0;
|
|
char dummy = 0;
|
|
va_list aq;
|
|
va_copy(aq, ap);
|
|
len = vsnprintf(&dummy, sizeof (dummy), fmt, aq);
|
|
va_end(aq);
|
|
*strp = (char *) xmalloc(len+1);
|
|
return vsnprintf(*strp, len+1, fmt, ap);
|
|
} // MOJOSETUP_vasprintf
|
|
|
|
int MOJOSETUP_asprintf(char **strp, const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
int len = 0;
|
|
char dummy = 0;
|
|
va_start(ap, fmt);
|
|
len = vsnprintf(&dummy, sizeof (dummy), fmt, ap);
|
|
va_end(ap);
|
|
*strp = (char *) xmalloc(len+1);
|
|
va_start(ap, fmt);
|
|
len = vsnprintf(*strp, len+1, fmt, ap);
|
|
va_end(ap);
|
|
return len;
|
|
} // MOJOSETUP_asprintf
|
|
|
|
time_t timegm_portable(struct tm *tm)
|
|
{
|
|
char *envr = getenv("TZ");
|
|
time_t retval;
|
|
setenv("TZ", "", 1);
|
|
tzset();
|
|
retval = mktime(tm);
|
|
if (envr)
|
|
setenv("TZ", envr, 1);
|
|
else
|
|
unsetenv("TZ");
|
|
tzset();
|
|
return retval;
|
|
} // timegm_portable
|
|
|
|
boolean ishexnumber(char ch)
|
|
{
|
|
return ( ((ch >= '0') && (ch <= '9')) ||
|
|
((ch >= 'a') && (ch <= 'f')) ||
|
|
((ch >= 'A') && (ch <= 'F')) );
|
|
} // ishexnumber
|
|
|
|
|
|
// This is a workaround because libfetch is a pain to make non-blocking.
|
|
// The ring buffer code is from my OpenAL implementation:
|
|
// http://icculus.org/al_osx/
|
|
|
|
typedef struct
|
|
{
|
|
uint8 *buffer;
|
|
uint32 size;
|
|
uint32 write;
|
|
uint32 read;
|
|
uint32 used;
|
|
} MojoRing;
|
|
|
|
static MojoRing *MojoRing_new(uint32 size)
|
|
{
|
|
MojoRing *ring = (MojoRing *) xmalloc(sizeof (MojoRing));
|
|
ring->buffer = (uint8 *) xmalloc(size);
|
|
ring->size = size;
|
|
ring->write = 0;
|
|
ring->read = 0;
|
|
ring->used = 0;
|
|
return ring;
|
|
} // MojoRing_new
|
|
|
|
static void MojoRing_free(MojoRing *ring)
|
|
{
|
|
free(ring->buffer);
|
|
free(ring);
|
|
} // MojoRing_free
|
|
|
|
uint32 MojoRing_availableForGet(MojoRing *ring)
|
|
{
|
|
return(ring->used);
|
|
} // MojoRing_size
|
|
|
|
uint32 MojoRing_availableForPut(MojoRing *ring)
|
|
{
|
|
return ring->size - ring->used;
|
|
} // MojoRing_size
|
|
|
|
void MojoRing_put(MojoRing *ring, uint8 *data, uint32 size)
|
|
{
|
|
uint32 cpy;
|
|
uint32 avail;
|
|
|
|
if (!size) // just in case...
|
|
return;
|
|
|
|
// Putting more data than ring buffer holds in total? Replace it all.
|
|
if (size > ring->size)
|
|
{
|
|
ring->write = 0;
|
|
ring->read = 0;
|
|
ring->used = ring->size;
|
|
memcpy(ring->buffer, data + (size - ring->size), ring->size);
|
|
return;
|
|
} // if
|
|
|
|
// Buffer overflow? Push read pointer to oldest sample not overwritten...
|
|
avail = ring->size - ring->used;
|
|
if (size > avail)
|
|
{
|
|
ring->read += size - avail;
|
|
if (ring->read > ring->size)
|
|
ring->read -= ring->size;
|
|
} // if
|
|
|
|
// Clip to end of buffer and copy first block...
|
|
cpy = ring->size - ring->write;
|
|
if (size < cpy)
|
|
cpy = size;
|
|
if (cpy) memcpy(ring->buffer + ring->write, data, cpy);
|
|
|
|
// Wrap around to front of ring buffer and copy remaining data...
|
|
avail = size - cpy;
|
|
if (avail) memcpy(ring->buffer, data + cpy, avail);
|
|
|
|
// Update write pointer...
|
|
ring->write += size;
|
|
if (ring->write > ring->size)
|
|
ring->write -= ring->size;
|
|
|
|
ring->used += size;
|
|
if (ring->used > ring->size)
|
|
ring->used = ring->size;
|
|
} // MojoRing_put
|
|
|
|
uint32 MojoRing_get(MojoRing *ring, uint8 *data, uint32 size)
|
|
{
|
|
uint32 cpy;
|
|
uint32 avail = ring->used;
|
|
|
|
// Clamp amount to read to available data...
|
|
if (size > avail)
|
|
size = avail;
|
|
|
|
// Clip to end of buffer and copy first block...
|
|
cpy = ring->size - ring->read;
|
|
if (cpy > size) cpy = size;
|
|
if (cpy) memcpy(data, ring->buffer + ring->read, cpy);
|
|
|
|
// Wrap around to front of ring buffer and copy remaining data...
|
|
avail = size - cpy;
|
|
if (avail) memcpy(data + cpy, ring->buffer, avail);
|
|
|
|
// Update read pointer...
|
|
ring->read += size;
|
|
if (ring->read > ring->size)
|
|
ring->read -= ring->size;
|
|
|
|
ring->used -= size;
|
|
|
|
return(size); // may have been clamped if there wasn't enough data...
|
|
} // MojoRing_get
|
|
|
|
|
|
|
|
typedef struct
|
|
{
|
|
const char *url;
|
|
MojoRing *ring;
|
|
int64 bytes_read;
|
|
int64 length;
|
|
boolean error;
|
|
volatile boolean stop;
|
|
pthread_t tid;
|
|
pthread_mutex_t mutex;
|
|
} BlockingInfo;
|
|
|
|
static void *blocking_thread(void *data)
|
|
{
|
|
struct url_stat us;
|
|
uint8 buf[512];
|
|
BlockingInfo *info = (BlockingInfo *) data;
|
|
|
|
// !!! FIXME: This function can hang until the connect() or read() times
|
|
// !!! FIXME: out, without any way to stop it. ready() can deal with
|
|
// !!! FIXME: the blocking reads, but closing the socket has to wait
|
|
// !!! FIXME: for a pthread_join, and thus can block for a LONG time.
|
|
// !!! FIXME: This is only a problem if the user wants to cancel a
|
|
// !!! FIXME: download, but it needs to be addressed. Moving libfetch
|
|
// !!! FIXME: to non-blocking sockets will fix this and let me flush
|
|
// !!! FIXME: all this heroic coding, too.
|
|
|
|
MojoInput *io = fetchXGetURL(info->url, &us, "rbp");
|
|
if (io != NULL)
|
|
{
|
|
if (!info->stop)
|
|
info->length = io->length(io);
|
|
} // if
|
|
else
|
|
{
|
|
info->error = true;
|
|
info->stop = true;
|
|
} // else
|
|
|
|
while (!info->stop)
|
|
{
|
|
uint8 *ptr = buf;
|
|
int64 br = io->read(io, buf, sizeof (buf));
|
|
|
|
if (br < 0)
|
|
info->stop = info->error = true;
|
|
else if (br == 0)
|
|
info->stop = true;
|
|
else
|
|
{
|
|
while (br > 0)
|
|
{
|
|
uint32 avail;
|
|
pthread_mutex_lock(&info->mutex);
|
|
avail = MojoRing_availableForPut(info->ring);
|
|
if (avail > br)
|
|
avail = br;
|
|
if (avail)
|
|
MojoRing_put(info->ring, ptr, avail);
|
|
pthread_mutex_unlock(&info->mutex);
|
|
ptr += avail;
|
|
br -= avail;
|
|
if (br > 0)
|
|
MojoPlatform_sleep(10);
|
|
} // while
|
|
} // else
|
|
} // while
|
|
|
|
if (io != NULL)
|
|
io->close(io);
|
|
|
|
return NULL;
|
|
} // blocking_thread
|
|
|
|
static boolean MojoInput_blocking_ready(MojoInput *io)
|
|
{
|
|
boolean retval = false;
|
|
BlockingInfo *info = (BlockingInfo *) io->opaque;
|
|
if (pthread_mutex_lock(&info->mutex) == 0)
|
|
{
|
|
retval = ( (info->stop) || (info->error) ||
|
|
MojoRing_availableForGet(info->ring) );
|
|
pthread_mutex_unlock(&info->mutex);
|
|
} // if
|
|
return retval;
|
|
} // MojoInput_blocking_ready
|
|
|
|
static int64 MojoInput_blocking_read(MojoInput *io, void *buf, uint32 bufsize)
|
|
{
|
|
BlockingInfo *info = (BlockingInfo *) io->opaque;
|
|
uint32 avail = 0;
|
|
while (!io->ready(io))
|
|
MojoPlatform_sleep(100);
|
|
|
|
if (pthread_mutex_lock(&info->mutex) != 0)
|
|
{
|
|
info->stop = info->error = true; // oh well.
|
|
return -1;
|
|
} // if
|
|
|
|
avail = MojoRing_availableForGet(info->ring);
|
|
if (avail > 0)
|
|
{
|
|
if (avail > bufsize)
|
|
avail = bufsize;
|
|
MojoRing_get(info->ring, (uint8 *) buf, avail);
|
|
info->bytes_read += avail;
|
|
} // if
|
|
|
|
pthread_mutex_unlock(&info->mutex);
|
|
|
|
if (avail > 0)
|
|
return avail;
|
|
|
|
if (info->error)
|
|
return -1;
|
|
|
|
assert(info->stop);
|
|
return 0;
|
|
} // MojoInput_blocking_read
|
|
|
|
static boolean MojoInput_blocking_seek(MojoInput *io, uint64 pos)
|
|
{
|
|
return -1;
|
|
} // MojoInput_blocking_seek
|
|
|
|
static int64 MojoInput_blocking_tell(MojoInput *io)
|
|
{
|
|
BlockingInfo *info = (BlockingInfo *) io->opaque;
|
|
return info->bytes_read;
|
|
} // MojoInput_blocking_tell
|
|
|
|
static int64 MojoInput_blocking_length(MojoInput *io)
|
|
{
|
|
BlockingInfo *info = (BlockingInfo *) io->opaque;
|
|
return info->length;
|
|
} // MojoInput_blocking_length
|
|
|
|
static MojoInput* MojoInput_blocking_duplicate(MojoInput *io)
|
|
{
|
|
return NULL;
|
|
} // MojoInput_blocking_duplicate
|
|
|
|
static void MojoInput_blocking_free(MojoInput *io)
|
|
{
|
|
BlockingInfo *info = (BlockingInfo *) io->opaque;
|
|
MojoRing_free(info->ring);
|
|
pthread_mutex_destroy(&info->mutex);
|
|
free((void *) info->url);
|
|
free(info);
|
|
free(io);
|
|
} // MojoInput_blocking_free
|
|
|
|
static void MojoInput_blocking_close(MojoInput *io)
|
|
{
|
|
BlockingInfo *info = (BlockingInfo *) io->opaque;
|
|
info->stop = true;
|
|
pthread_join(info->tid, NULL);
|
|
MojoInput_blocking_free(io);
|
|
} // MojoInput_blocking_close
|
|
|
|
|
|
|
|
MojoInput *MojoInput_newFromURL(const char *url)
|
|
{
|
|
MojoInput *retval = NULL;
|
|
if (url != NULL)
|
|
{
|
|
BlockingInfo *info = (BlockingInfo *) xmalloc(sizeof (BlockingInfo));
|
|
info->url = xstrdup(url);
|
|
info->ring = MojoRing_new(512 * 1024);
|
|
info->length = -1;
|
|
retval = (MojoInput *) xmalloc(sizeof (MojoInput));
|
|
retval->ready = MojoInput_blocking_ready;
|
|
retval->read = MojoInput_blocking_read;
|
|
retval->seek = MojoInput_blocking_seek;
|
|
retval->tell = MojoInput_blocking_tell;
|
|
retval->length = MojoInput_blocking_length;
|
|
retval->duplicate = MojoInput_blocking_duplicate;
|
|
retval->close = MojoInput_blocking_close;
|
|
retval->opaque = info;
|
|
|
|
if ( (pthread_mutex_init(&info->mutex, NULL) != 0) ||
|
|
(pthread_create(&info->tid, NULL, blocking_thread, info) != 0) )
|
|
{
|
|
MojoInput_blocking_free(retval);
|
|
retval = NULL;
|
|
} // if
|
|
} // if
|
|
return retval;
|
|
} // MojoInput_newFromURL
|
|
#endif
|
|
|