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- CURLINFO_CONDITION_UNMET was added to allow an application to get to know if

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the condition in the previous request was unmet. This is typically a time
  condition set with CURLOPT_TIMECONDITION and was previously not possible to
  reliably figure out. From bug report #2565128
  (http://curl.haxx.se/bug/view.cgi?id=2565128)
This commit is contained in:
Daniel Stenberg 2009-02-11 21:47:14 +00:00
parent fb8fdf9273
commit 002cf105c6
10 changed files with 37 additions and 7 deletions
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7
CHANGES
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@ -6,6 +6,13 @@
Changelog
Daniel Stenberg (11 Feb 2009)
- CURLINFO_CONDITION_UNMET was added to allow an application to get to know if
the condition in the previous request was unmet. This is typically a time
condition set with CURLOPT_TIMECONDITION and was previously not possible to
reliably figure out. From bug report #2565128
(http://curl.haxx.se/bug/view.cgi?id=2565128)
Daniel Fandrich (4 Feb 2009)
- Don't add the standard /usr/lib or /usr/include paths to LDFLAGS and CPPFLAGS
(respectively) when --with-ssl=/usr is used (patch based on FreeBSD).

1
RELEASE-NOTES
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@ -19,6 +19,7 @@ This release includes the following changes:
o Improved IPv6 support when built with with c-ares >= 1.6.1
o Added CURLPROXY_HTTP_1_0 and --proxy1.0
o Added docs/libcurl/symbols-in-versions
o Added CURLINFO_CONDITION_UNMET
This release includes the following bugfixes:

10
docs/libcurl/curl_easy_getinfo.3
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@ -5,7 +5,7 @@
.\" * | (__| |_| | _ <| |___
.\" * \___|\___/|_| \_\_____|
.\" *
.\" * Copyright (C) 1998 - 2008, Daniel Stenberg, <daniel@haxx.se>, et al.
.\" * Copyright (C) 1998 - 2009, 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
@ -21,7 +21,7 @@
.\" * $Id$
.\" **************************************************************************
.\"
.TH curl_easy_getinfo 3 "16 Oct 2008" "libcurl 7.19.1" "libcurl Manual"
.TH curl_easy_getinfo 3 "11 Feb 2009" "libcurl 7.19.4" "libcurl Manual"
.SH NAME
curl_easy_getinfo - extract information from a curl handle
.SH SYNOPSIS
@ -200,6 +200,12 @@ provided in a series of data in the format "name:content" where the content is
for the specific named data. See also the certinfo.c example. NOTE: this
option is only available in libcurl built with OpenSSL support. (Added in
7.19.1)
.IP CURLINFO_CONDITION_UNMET
Pass a pointer to a long to receive the number 1 if the condition provided in
the previous request didn't match (see \fICURLOPT_TIMECONDITION\fP). Alas, if
this returns a 1 you know that the reason you didn't get data in return is
because it didn't fulfill the condition. The long ths argument points to will
get a zero stored if the condition instead was met. (Added in 7.19.4)
.SH TIMES
.NF
An overview of the six time values available from curl_easy_getinfo()

6
docs/libcurl/curl_easy_setopt.3
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@ -1326,8 +1326,10 @@ value is treated. You can set this parameter to \fICURL_TIMECOND_IFMODSINCE\fP
or \fICURL_TIMECOND_IFUNMODSINCE\fP. This feature applies to HTTP and FTP.
The last modification time of a file is not always known and in such instances
this feature will have no effect even if the given time condition would not have
been met.
this feature will have no effect even if the given time condition would not
have been met. \fIcurl_easy_getinfo(3)\fP with the
\fICURLINFO_CONDITION_UNMET\fP option can be used after a transfer to learn if
a zero-byte successful "transfer" was due to this condition not matching.
.IP CURLOPT_TIMEVALUE
Pass a long as parameter. This should be the time in seconds since 1 Jan 1970,
and the time will be used in a condition as specified with

1
docs/libcurl/symbols-in-versions
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@ -33,6 +33,7 @@ CURLFTPSSL_CCC_NONE 7.16.1
CURLFTPSSL_CCC_PASSIVE 7.16.1
CURLINFO_APPCONNECT_TIME 7.19.0
CURLINFO_CERTINFO 7.19.1
CURLINFO_CONDITION_UNMET 7.19.4
CURLINFO_CONNECT_TIME 7.4.1
CURLINFO_CONTENT_LENGTH_DOWNLOAD 7.6.1
CURLINFO_CONTENT_LENGTH_UPLOAD 7.6.1

3
include/curl/curl.h
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@ -1592,9 +1592,10 @@ typedef enum {
CURLINFO_PRIMARY_IP = CURLINFO_STRING + 32,
CURLINFO_APPCONNECT_TIME = CURLINFO_DOUBLE + 33,
CURLINFO_CERTINFO = CURLINFO_SLIST + 34,
CURLINFO_CONDITION_UNMET = CURLINFO_LONG + 35,
/* Fill in new entries below here! */
CURLINFO_LASTONE = 34
CURLINFO_LASTONE = 35
} CURLINFO;
/* CURLINFO_RESPONSE_CODE is the new name for the option previously known as

2
lib/ftp.c
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@ -2045,6 +2045,7 @@ static CURLcode ftp_state_mdtm_resp(struct connectdata *conn,
if(data->info.filetime <= data->set.timevalue) {
infof(data, "The requested document is not new enough\n");
ftp->transfer = FTPTRANSFER_NONE; /* mark this to not transfer data */
data->info.timecond = TRUE;
state(conn, FTP_STOP);
return CURLE_OK;
}
@ -2053,6 +2054,7 @@ static CURLcode ftp_state_mdtm_resp(struct connectdata *conn,
if(data->info.filetime > data->set.timevalue) {
infof(data, "The requested document is not old enough\n");
ftp->transfer = FTPTRANSFER_NONE; /* mark this to not transfer data */
data->info.timecond = TRUE;
state(conn, FTP_STOP);
return CURLE_OK;
}

6
lib/getinfo.c
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@ -5,7 +5,7 @@
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2008, Daniel Stenberg, <daniel@haxx.se>, et al.
* Copyright (C) 1998 - 2009, 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
@ -228,6 +228,10 @@ CURLcode Curl_getinfo(struct SessionHandle *data, CURLINFO info, ...)
ptr.to_certinfo = &data->info.certs;
*param_slistp = ptr.to_slist;
break;
case CURLINFO_CONDITION_UNMET:
/* return if the condition prevented the document to get transfered */
*param_longp = data->info.timecond;
break;
default:
return CURLE_BAD_FUNCTION_ARGUMENT;
}

6
lib/transfer.c
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@ -5,7 +5,7 @@
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2008, Daniel Stenberg, <daniel@haxx.se>, et al.
* Copyright (C) 1998 - 2009, 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
@ -497,6 +497,7 @@ static CURLcode readwrite_data(struct SessionHandle *data,
infof(data,
"The requested document is not new enough\n");
*done = TRUE;
data->info.timecond = TRUE;
return CURLE_OK;
}
break;
@ -505,6 +506,7 @@ static CURLcode readwrite_data(struct SessionHandle *data,
infof(data,
"The requested document is not old enough\n");
*done = TRUE;
data->info.timecond = TRUE;
return CURLE_OK;
}
break;
@ -1107,6 +1109,8 @@ static CURLcode readwrite_http_headers(struct SessionHandle *data,
* MUST NOT contain a message-body, and thus is always
* terminated by the first empty line after the header
* fields. */
if(data->set.timecondition)
data->info.timecond = TRUE;
k->size=0;
k->maxdownload=0;
k->ignorecl = TRUE; /* ignore Content-Length headers */

2
lib/urldata.h
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@ -1063,6 +1063,8 @@ struct PureInfo {
was unretrievable. We cannot have this of type time_t,
since time_t is unsigned on several platforms such as
OpenVMS. */
bool timecond; /* set to TRUE if the time condition didn't match, which
thus made the document NOT get fetched */
long header_size; /* size of read header(s) in bytes */
long request_size; /* the amount of bytes sent in the request(s) */
long proxyauthavail; /* what proxy auth types were announced */