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edf2f6a6f6
curl/lib/progress.c
Daniel Stenberg dcd6f81025
snprintf: renamed and we now only use msnprintf() 
The function does not return the same value as snprintf() normally does,
so readers may be mislead into thinking the code works differently than
it actually does. A different function name makes this easier to detect.

Reported-by: Tomas Hoger
Assisted-by: Daniel Gustafsson
Fixes #3296
Closes #3297
2018-11-23 08:26:51 +01:00

608 lines
21 KiB
C
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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2018, 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 https://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.
*
***************************************************************************/
#include "curl_setup.h"
#include "urldata.h"
#include "sendf.h"
#include "multiif.h"
#include "progress.h"
#include "curl_printf.h"
/* check rate limits within this many recent milliseconds, at minimum. */
#define MIN_RATE_LIMIT_PERIOD 3000
/* Provide a string that is 2 + 1 + 2 + 1 + 2 = 8 letters long (plus the zero
byte) */
static void time2str(char *r, curl_off_t seconds)
{
curl_off_t h;
if(seconds <= 0) {
strcpy(r, "--:--:--");
return;
}
h = seconds / CURL_OFF_T_C(3600);
if(h <= CURL_OFF_T_C(99)) {
curl_off_t m = (seconds - (h*CURL_OFF_T_C(3600))) / CURL_OFF_T_C(60);
curl_off_t s = (seconds - (h*CURL_OFF_T_C(3600))) - (m*CURL_OFF_T_C(60));
msnprintf(r, 9, "%2" CURL_FORMAT_CURL_OFF_T ":%02" CURL_FORMAT_CURL_OFF_T
":%02" CURL_FORMAT_CURL_OFF_T, h, m, s);
}
else {
/* this equals to more than 99 hours, switch to a more suitable output
format to fit within the limits. */
curl_off_t d = seconds / CURL_OFF_T_C(86400);
h = (seconds - (d*CURL_OFF_T_C(86400))) / CURL_OFF_T_C(3600);
if(d <= CURL_OFF_T_C(999))
msnprintf(r, 9, "%3" CURL_FORMAT_CURL_OFF_T
"d %02" CURL_FORMAT_CURL_OFF_T "h", d, h);
else
msnprintf(r, 9, "%7" CURL_FORMAT_CURL_OFF_T "d", d);
}
}
/* The point of this function would be to return a string of the input data,
but never longer than 5 columns (+ one zero byte).
Add suffix k, M, G when suitable... */
static char *max5data(curl_off_t bytes, char *max5)
{
#define ONE_KILOBYTE CURL_OFF_T_C(1024)
#define ONE_MEGABYTE (CURL_OFF_T_C(1024) * ONE_KILOBYTE)
#define ONE_GIGABYTE (CURL_OFF_T_C(1024) * ONE_MEGABYTE)
#define ONE_TERABYTE (CURL_OFF_T_C(1024) * ONE_GIGABYTE)
#define ONE_PETABYTE (CURL_OFF_T_C(1024) * ONE_TERABYTE)
if(bytes < CURL_OFF_T_C(100000))
msnprintf(max5, 6, "%5" CURL_FORMAT_CURL_OFF_T, bytes);
else if(bytes < CURL_OFF_T_C(10000) * ONE_KILOBYTE)
msnprintf(max5, 6, "%4" CURL_FORMAT_CURL_OFF_T "k", bytes/ONE_KILOBYTE);
else if(bytes < CURL_OFF_T_C(100) * ONE_MEGABYTE)
/* 'XX.XM' is good as long as we're less than 100 megs */
msnprintf(max5, 6, "%2" CURL_FORMAT_CURL_OFF_T ".%0"
CURL_FORMAT_CURL_OFF_T "M", bytes/ONE_MEGABYTE,
(bytes%ONE_MEGABYTE) / (ONE_MEGABYTE/CURL_OFF_T_C(10)) );
#if (CURL_SIZEOF_CURL_OFF_T > 4)
else if(bytes < CURL_OFF_T_C(10000) * ONE_MEGABYTE)
/* 'XXXXM' is good until we're at 10000MB or above */
msnprintf(max5, 6, "%4" CURL_FORMAT_CURL_OFF_T "M", bytes/ONE_MEGABYTE);
else if(bytes < CURL_OFF_T_C(100) * ONE_GIGABYTE)
/* 10000 MB - 100 GB, we show it as XX.XG */
msnprintf(max5, 6, "%2" CURL_FORMAT_CURL_OFF_T ".%0"
CURL_FORMAT_CURL_OFF_T "G", bytes/ONE_GIGABYTE,
(bytes%ONE_GIGABYTE) / (ONE_GIGABYTE/CURL_OFF_T_C(10)) );
else if(bytes < CURL_OFF_T_C(10000) * ONE_GIGABYTE)
/* up to 10000GB, display without decimal: XXXXG */
msnprintf(max5, 6, "%4" CURL_FORMAT_CURL_OFF_T "G", bytes/ONE_GIGABYTE);
else if(bytes < CURL_OFF_T_C(10000) * ONE_TERABYTE)
/* up to 10000TB, display without decimal: XXXXT */
msnprintf(max5, 6, "%4" CURL_FORMAT_CURL_OFF_T "T", bytes/ONE_TERABYTE);
else
/* up to 10000PB, display without decimal: XXXXP */
msnprintf(max5, 6, "%4" CURL_FORMAT_CURL_OFF_T "P", bytes/ONE_PETABYTE);
/* 16384 petabytes (16 exabytes) is the maximum a 64 bit unsigned number
can hold, but our data type is signed so 8192PB will be the maximum. */
#else
else
msnprintf(max5, 6, "%4" CURL_FORMAT_CURL_OFF_T "M", bytes/ONE_MEGABYTE);
#endif
return max5;
}
/*
New proposed interface, 9th of February 2000:
pgrsStartNow() - sets start time
pgrsSetDownloadSize(x) - known expected download size
pgrsSetUploadSize(x) - known expected upload size
pgrsSetDownloadCounter() - amount of data currently downloaded
pgrsSetUploadCounter() - amount of data currently uploaded
pgrsUpdate() - show progress
pgrsDone() - transfer complete
*/
int Curl_pgrsDone(struct connectdata *conn)
{
int rc;
struct Curl_easy *data = conn->data;
data->progress.lastshow = 0;
rc = Curl_pgrsUpdate(conn); /* the final (forced) update */
if(rc)
return rc;
if(!(data->progress.flags & PGRS_HIDE) &&
!data->progress.callback)
/* only output if we don't use a progress callback and we're not
* hidden */
fprintf(data->set.err, "\n");
data->progress.speeder_c = 0; /* reset the progress meter display */
return 0;
}
/* reset the known transfer sizes */
void Curl_pgrsResetTransferSizes(struct Curl_easy *data)
{
Curl_pgrsSetDownloadSize(data, -1);
Curl_pgrsSetUploadSize(data, -1);
}
/*
* @unittest: 1399
*/
void Curl_pgrsTime(struct Curl_easy *data, timerid timer)
{
struct curltime now = Curl_now();
time_t *delta = NULL;
switch(timer) {
default:
case TIMER_NONE:
/* mistake filter */
break;
case TIMER_STARTOP:
/* This is set at the start of a transfer */
data->progress.t_startop = now;
break;
case TIMER_STARTSINGLE:
/* This is set at the start of each single fetch */
data->progress.t_startsingle = now;
data->progress.is_t_startransfer_set = false;
break;
case TIMER_STARTACCEPT:
data->progress.t_acceptdata = now;
break;
case TIMER_NAMELOOKUP:
delta = &data->progress.t_nslookup;
break;
case TIMER_CONNECT:
delta = &data->progress.t_connect;
break;
case TIMER_APPCONNECT:
delta = &data->progress.t_appconnect;
break;
case TIMER_PRETRANSFER:
delta = &data->progress.t_pretransfer;
break;
case TIMER_STARTTRANSFER:
delta = &data->progress.t_starttransfer;
/* prevent updating t_starttransfer unless:
* 1) this is the first time we're setting t_starttransfer
* 2) a redirect has occurred since the last time t_starttransfer was set
* This prevents repeated invocations of the function from incorrectly
* changing the t_starttransfer time.
*/
if(data->progress.is_t_startransfer_set) {
return;
}
else {
data->progress.is_t_startransfer_set = true;
break;
}
case TIMER_POSTRANSFER:
/* this is the normal end-of-transfer thing */
break;
case TIMER_REDIRECT:
data->progress.t_redirect = Curl_timediff_us(now, data->progress.start);
break;
}
if(delta) {
timediff_t us = Curl_timediff_us(now, data->progress.t_startsingle);
if(us < 1)
us = 1; /* make sure at least one microsecond passed */
*delta += us;
}
}
void Curl_pgrsStartNow(struct Curl_easy *data)
{
data->progress.speeder_c = 0; /* reset the progress meter display */
data->progress.start = Curl_now();
data->progress.is_t_startransfer_set = false;
data->progress.ul_limit_start.tv_sec = 0;
data->progress.ul_limit_start.tv_usec = 0;
data->progress.dl_limit_start.tv_sec = 0;
data->progress.dl_limit_start.tv_usec = 0;
/* clear all bits except HIDE and HEADERS_OUT */
data->progress.flags &= PGRS_HIDE|PGRS_HEADERS_OUT;
Curl_ratelimit(data, data->progress.start);
}
/*
* This is used to handle speed limits, calculating how many milliseconds to
* wait until we're back under the speed limit, if needed.
*
* The way it works is by having a "starting point" (time & amount of data
* transferred by then) used in the speed computation, to be used instead of
* the start of the transfer. This starting point is regularly moved as
* transfer goes on, to keep getting accurate values (instead of average over
* the entire transfer).
*
* This function takes the current amount of data transferred, the amount at
* the starting point, the limit (in bytes/s), the time of the starting point
* and the current time.
*
* Returns 0 if no waiting is needed or when no waiting is needed but the
* starting point should be reset (to current); or the number of milliseconds
* to wait to get back under the speed limit.
*/
timediff_t Curl_pgrsLimitWaitTime(curl_off_t cursize,
curl_off_t startsize,
curl_off_t limit,
struct curltime start,
struct curltime now)
{
curl_off_t size = cursize - startsize;
time_t minimum;
time_t actual;
if(!limit || !size)
return 0;
/*
* 'minimum' is the number of milliseconds 'size' should take to download to
* stay below 'limit'.
*/
if(size < CURL_OFF_T_MAX/1000)
minimum = (time_t) (CURL_OFF_T_C(1000) * size / limit);
else {
minimum = (time_t) (size / limit);
if(minimum < TIME_T_MAX/1000)
minimum *= 1000;
else
minimum = TIME_T_MAX;
}
/*
* 'actual' is the time in milliseconds it took to actually download the
* last 'size' bytes.
*/
actual = Curl_timediff(now, start);
if(actual < minimum) {
/* if it downloaded the data faster than the limit, make it wait the
difference */
return (minimum - actual);
}
return 0;
}
/*
* Set the number of downloaded bytes so far.
*/
void Curl_pgrsSetDownloadCounter(struct Curl_easy *data, curl_off_t size)
{
data->progress.downloaded = size;
}
/*
* Update the timestamp and sizestamp to use for rate limit calculations.
*/
void Curl_ratelimit(struct Curl_easy *data, struct curltime now)
{
/* don't set a new stamp unless the time since last update is long enough */
if(data->set.max_recv_speed > 0) {
if(Curl_timediff(now, data->progress.dl_limit_start) >=
MIN_RATE_LIMIT_PERIOD) {
data->progress.dl_limit_start = now;
data->progress.dl_limit_size = data->progress.downloaded;
}
}
if(data->set.max_send_speed > 0) {
if(Curl_timediff(now, data->progress.ul_limit_start) >=
MIN_RATE_LIMIT_PERIOD) {
data->progress.ul_limit_start = now;
data->progress.ul_limit_size = data->progress.uploaded;
}
}
}
/*
* Set the number of uploaded bytes so far.
*/
void Curl_pgrsSetUploadCounter(struct Curl_easy *data, curl_off_t size)
{
data->progress.uploaded = size;
}
void Curl_pgrsSetDownloadSize(struct Curl_easy *data, curl_off_t size)
{
if(size >= 0) {
data->progress.size_dl = size;
data->progress.flags |= PGRS_DL_SIZE_KNOWN;
}
else {
data->progress.size_dl = 0;
data->progress.flags &= ~PGRS_DL_SIZE_KNOWN;
}
}
void Curl_pgrsSetUploadSize(struct Curl_easy *data, curl_off_t size)
{
if(size >= 0) {
data->progress.size_ul = size;
data->progress.flags |= PGRS_UL_SIZE_KNOWN;
}
else {
data->progress.size_ul = 0;
data->progress.flags &= ~PGRS_UL_SIZE_KNOWN;
}
}
/*
* Curl_pgrsUpdate() returns 0 for success or the value returned by the
* progress callback!
*/
int Curl_pgrsUpdate(struct connectdata *conn)
{
struct curltime now;
curl_off_t timespent;
curl_off_t timespent_ms; /* milliseconds */
struct Curl_easy *data = conn->data;
int nowindex = data->progress.speeder_c% CURR_TIME;
bool shownow = FALSE;
curl_off_t dl = data->progress.downloaded;
curl_off_t ul = data->progress.uploaded;
now = Curl_now(); /* what time is it */
/* The time spent so far (from the start) */
data->progress.timespent = Curl_timediff_us(now, data->progress.start);
timespent = (curl_off_t)data->progress.timespent/1000000; /* seconds */
timespent_ms = (curl_off_t)data->progress.timespent/1000; /* ms */
/* The average download speed this far */
if(dl < CURL_OFF_T_MAX/1000)
data->progress.dlspeed = (dl * 1000 / (timespent_ms>0?timespent_ms:1));
else
data->progress.dlspeed = (dl / (timespent>0?timespent:1));
/* The average upload speed this far */
if(ul < CURL_OFF_T_MAX/1000)
data->progress.ulspeed = (ul * 1000 / (timespent_ms>0?timespent_ms:1));
else
data->progress.ulspeed = (ul / (timespent>0?timespent:1));
/* Calculations done at most once a second, unless end is reached */
if(data->progress.lastshow != now.tv_sec) {
int countindex; /* amount of seconds stored in the speeder array */
shownow = TRUE;
data->progress.lastshow = now.tv_sec;
/* Let's do the "current speed" thing, with the dl + ul speeds
combined. Store the speed at entry 'nowindex'. */
data->progress.speeder[ nowindex ] =
data->progress.downloaded + data->progress.uploaded;
/* remember the exact time for this moment */
data->progress.speeder_time [ nowindex ] = now;
/* advance our speeder_c counter, which is increased every time we get
here and we expect it to never wrap as 2^32 is a lot of seconds! */
data->progress.speeder_c++;
/* figure out how many index entries of data we have stored in our speeder
array. With N_ENTRIES filled in, we have about N_ENTRIES-1 seconds of
transfer. Imagine, after one second we have filled in two entries,
after two seconds we've filled in three entries etc. */
countindex = ((data->progress.speeder_c >= CURR_TIME)?
CURR_TIME:data->progress.speeder_c) - 1;
/* first of all, we don't do this if there's no counted seconds yet */
if(countindex) {
int checkindex;
timediff_t span_ms;
/* Get the index position to compare with the 'nowindex' position.
Get the oldest entry possible. While we have less than CURR_TIME
entries, the first entry will remain the oldest. */
checkindex = (data->progress.speeder_c >= CURR_TIME)?
data->progress.speeder_c%CURR_TIME:0;
/* Figure out the exact time for the time span */
span_ms = Curl_timediff(now,
data->progress.speeder_time[checkindex]);
if(0 == span_ms)
span_ms = 1; /* at least one millisecond MUST have passed */
/* Calculate the average speed the last 'span_ms' milliseconds */
{
curl_off_t amount = data->progress.speeder[nowindex]-
data->progress.speeder[checkindex];
if(amount > CURL_OFF_T_C(4294967) /* 0xffffffff/1000 */)
/* the 'amount' value is bigger than would fit in 32 bits if
multiplied with 1000, so we use the double math for this */
data->progress.current_speed = (curl_off_t)
((double)amount/((double)span_ms/1000.0));
else
/* the 'amount' value is small enough to fit within 32 bits even
when multiplied with 1000 */
data->progress.current_speed = amount*CURL_OFF_T_C(1000)/span_ms;
}
}
else
/* the first second we use the average */
data->progress.current_speed =
data->progress.ulspeed + data->progress.dlspeed;
} /* Calculations end */
if(!(data->progress.flags & PGRS_HIDE)) {
/* progress meter has not been shut off */
char max5[6][10];
curl_off_t dlpercen = 0;
curl_off_t ulpercen = 0;
curl_off_t total_percen = 0;
curl_off_t total_transfer;
curl_off_t total_expected_transfer;
char time_left[10];
char time_total[10];
char time_spent[10];
curl_off_t ulestimate = 0;
curl_off_t dlestimate = 0;
curl_off_t total_estimate;
if(data->set.fxferinfo) {
int result;
/* There's a callback set, call that */
Curl_set_in_callback(data, true);
result = data->set.fxferinfo(data->set.progress_client,
data->progress.size_dl,
data->progress.downloaded,
data->progress.size_ul,
data->progress.uploaded);
Curl_set_in_callback(data, false);
if(result)
failf(data, "Callback aborted");
return result;
}
if(data->set.fprogress) {
int result;
/* The older deprecated callback is set, call that */
Curl_set_in_callback(data, true);
result = data->set.fprogress(data->set.progress_client,
(double)data->progress.size_dl,
(double)data->progress.downloaded,
(double)data->progress.size_ul,
(double)data->progress.uploaded);
Curl_set_in_callback(data, false);
if(result)
failf(data, "Callback aborted");
return result;
}
if(!shownow)
/* only show the internal progress meter once per second */
return 0;
/* If there's no external callback set, use internal code to show
progress */
if(!(data->progress.flags & PGRS_HEADERS_OUT)) {
if(data->state.resume_from) {
fprintf(data->set.err,
"** Resuming transfer from byte position %"
CURL_FORMAT_CURL_OFF_T "\n", data->state.resume_from);
}
fprintf(data->set.err,
" %% Total %% Received %% Xferd Average Speed "
"Time Time Time Current\n"
" Dload Upload "
"Total Spent Left Speed\n");
data->progress.flags |= PGRS_HEADERS_OUT; /* headers are shown */
}
/* Figure out the estimated time of arrival for the upload */
if((data->progress.flags & PGRS_UL_SIZE_KNOWN) &&
(data->progress.ulspeed > CURL_OFF_T_C(0))) {
ulestimate = data->progress.size_ul / data->progress.ulspeed;
if(data->progress.size_ul > CURL_OFF_T_C(10000))
ulpercen = data->progress.uploaded /
(data->progress.size_ul/CURL_OFF_T_C(100));
else if(data->progress.size_ul > CURL_OFF_T_C(0))
ulpercen = (data->progress.uploaded*100) /
data->progress.size_ul;
}
/* ... and the download */
if((data->progress.flags & PGRS_DL_SIZE_KNOWN) &&
(data->progress.dlspeed > CURL_OFF_T_C(0))) {
dlestimate = data->progress.size_dl / data->progress.dlspeed;
if(data->progress.size_dl > CURL_OFF_T_C(10000))
dlpercen = data->progress.downloaded /
(data->progress.size_dl/CURL_OFF_T_C(100));
else if(data->progress.size_dl > CURL_OFF_T_C(0))
dlpercen = (data->progress.downloaded*100) /
data->progress.size_dl;
}
/* Now figure out which of them is slower and use that one for the
total estimate! */
total_estimate = ulestimate>dlestimate?ulestimate:dlestimate;
/* create the three time strings */
time2str(time_left, total_estimate > 0?(total_estimate - timespent):0);
time2str(time_total, total_estimate);
time2str(time_spent, timespent);
/* Get the total amount of data expected to get transferred */
total_expected_transfer =
(data->progress.flags & PGRS_UL_SIZE_KNOWN?
data->progress.size_ul:data->progress.uploaded)+
(data->progress.flags & PGRS_DL_SIZE_KNOWN?
data->progress.size_dl:data->progress.downloaded);
/* We have transferred this much so far */
total_transfer = data->progress.downloaded + data->progress.uploaded;
/* Get the percentage of data transferred so far */
if(total_expected_transfer > CURL_OFF_T_C(10000))
total_percen = total_transfer /
(total_expected_transfer/CURL_OFF_T_C(100));
else if(total_expected_transfer > CURL_OFF_T_C(0))
total_percen = (total_transfer*100) / total_expected_transfer;
fprintf(data->set.err,
"\r"
"%3" CURL_FORMAT_CURL_OFF_T " %s "
"%3" CURL_FORMAT_CURL_OFF_T " %s "
"%3" CURL_FORMAT_CURL_OFF_T " %s %s %s %s %s %s %s",
total_percen, /* 3 letters */ /* total % */
max5data(total_expected_transfer, max5[2]), /* total size */
dlpercen, /* 3 letters */ /* rcvd % */
max5data(data->progress.downloaded, max5[0]), /* rcvd size */
ulpercen, /* 3 letters */ /* xfer % */
max5data(data->progress.uploaded, max5[1]), /* xfer size */
max5data(data->progress.dlspeed, max5[3]), /* avrg dl speed */
max5data(data->progress.ulspeed, max5[4]), /* avrg ul speed */
time_total, /* 8 letters */ /* total time */
time_spent, /* 8 letters */ /* time spent */
time_left, /* 8 letters */ /* time left */
max5data(data->progress.current_speed, max5[5]) /* current speed */
);
/* we flush the output stream to make it appear as soon as possible */
fflush(data->set.err);
} /* !(data->progress.flags & PGRS_HIDE) */
return 0;
}
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