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transfer: add Curl_meets_timecondition()

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This will be used by file_do() and Curl_readwrite() as a unified method
of checking to see if a remote document meets the supplied
CURLOPT_TIMEVAL and CURLOPT_TIMECONDITION.

Signed-off-by: Dave Reisner <d@falconindy.com>
This commit is contained in:
Dave Reisner 2011-01-29 22:12:33 -05:00 committed by Kamil Dudka
parent 819dfddc58
commit 99dcb11ed8
2 changed files with 37 additions and 23 deletions
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53
lib/transfer.c
View File

@ -355,6 +355,37 @@ static void read_rewind(struct connectdata *conn,
#endif
}
/*
* Check to see if CURLOPT_TIMECONDITION was met by comparing the time of the
* remote document with the time provided by CURLOPT_TIMEVAL
*/
bool Curl_meets_timecondition(struct SessionHandle *data, long timeofdoc)
{
if((timeofdoc == 0) || (data->set.timevalue == 0))
return TRUE;
switch(data->set.timecondition) {
case CURL_TIMECOND_IFMODSINCE:
default:
if(timeofdoc <= data->set.timevalue) {
infof(data,
"The requested document is not new enough\n");
data->info.timecond = TRUE;
return FALSE;
}
break;
case CURL_TIMECOND_IFUNMODSINCE:
if(timeofdoc >= data->set.timevalue) {
infof(data,
"The requested document is not old enough\n");
data->info.timecond = TRUE;
return FALSE;
}
break;
}
return TRUE;
}
/*
* Go ahead and do a read if we have a readable socket or if
@ -518,29 +549,11 @@ static CURLcode readwrite_data(struct SessionHandle *data,
requested. This seems to be what chapter 13.3.4 of
RFC 2616 defines to be the correct action for a
HTTP/1.1 client */
if((k->timeofdoc > 0) && (data->set.timevalue > 0)) {
switch(data->set.timecondition) {
case CURL_TIMECOND_IFMODSINCE:
default:
if(k->timeofdoc < data->set.timevalue) {
infof(data,
"The requested document is not new enough\n");
if(!Curl_meets_timecondition(data, k->timeofdoc)) {
*done = TRUE;
data->info.timecond = TRUE;
return CURLE_OK;
}
break;
case CURL_TIMECOND_IFUNMODSINCE:
if(k->timeofdoc > data->set.timevalue) {
infof(data,
"The requested document is not old enough\n");
*done = TRUE;
data->info.timecond = TRUE;
return CURLE_OK;
}
break;
} /* switch */
} /* two valid time strings */
} /* we have a time condition */
} /* this is HTTP */

1
lib/transfer.h
View File

@ -47,6 +47,7 @@ CURLcode Curl_readrewind(struct connectdata *conn);
CURLcode Curl_fillreadbuffer(struct connectdata *conn, int bytes, int *nreadp);
CURLcode Curl_reconnect_request(struct connectdata **connp);
CURLcode Curl_retry_request(struct connectdata *conn, char **url);
bool Curl_meets_timecondition(struct SessionHandle *data, long timeofdoc);
/* This sets up a forthcoming transfer */
void