/*************************************************************************** * _ _ ____ _ * Project ___| | | | _ \| | * / __| | | | |_) | | * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * * Copyright (C) 1998 - 2021, Daniel Stenberg, , 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.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 "timeval.h" #include "curl_printf.h" /* check rate limits within this many recent milliseconds, at minimum. */ #define MIN_RATE_LIMIT_PERIOD 3000 #ifndef CURL_DISABLE_PROGRESS_METER /* 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 (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; } #endif /* 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 Curl_easy *data) { int rc; data->progress.lastshow = 0; rc = Curl_pgrsUpdate(data); /* 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); } /* * * Curl_pgrsTime(). Store the current time at the given label. This fetches a * fresh "now" and returns it. * * @unittest: 1399 */ struct curltime Curl_pgrsTime(struct Curl_easy *data, timerid timer) { struct curltime now = Curl_now(); timediff_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 now; } 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; } return now; } 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 = data->progress.start; data->progress.dl_limit_start = data->progress.start; data->progress.downloaded = 0; data->progress.uploaded = 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; timediff_t minimum; timediff_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 = (timediff_t) (CURL_OFF_T_C(1000) * size / limit); else { minimum = (timediff_t) (size / limit); if(minimum < TIMEDIFF_T_MAX/1000) minimum *= 1000; else minimum = TIMEDIFF_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) { 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) { 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; } } /* returns the average speed in bytes / second */ static curl_off_t trspeed(curl_off_t size, /* number of bytes */ curl_off_t us) /* microseconds */ { if(us < 1) return size * 1000000; return (curl_off_t)((long double)size/us * 1000000); } /* returns TRUE if it's time to show the progress meter */ static bool progress_calc(struct Curl_easy *data, struct curltime now) { bool timetoshow = FALSE; struct Progress * const p = &data->progress; /* The time spent so far (from the start) in microseconds */ p->timespent = Curl_timediff_us(now, p->start); p->dlspeed = trspeed(p->downloaded, p->timespent); p->ulspeed = trspeed(p->uploaded, p->timespent); /* Calculations done at most once a second, unless end is reached */ if(p->lastshow != now.tv_sec) { int countindex; /* amount of seconds stored in the speeder array */ int nowindex = p->speeder_c% CURR_TIME; p->lastshow = now.tv_sec; timetoshow = TRUE; /* Let's do the "current speed" thing, with the dl + ul speeds combined. Store the speed at entry 'nowindex'. */ p->speeder[ nowindex ] = p->downloaded + p->uploaded; /* remember the exact time for this moment */ p->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! */ p->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 = ((p->speeder_c >= CURR_TIME)? CURR_TIME:p->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; curl_off_t amount; /* 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 = (p->speeder_c >= CURR_TIME)? p->speeder_c%CURR_TIME:0; /* Figure out the exact time for the time span */ span_ms = Curl_timediff(now, p->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 */ amount = p->speeder[nowindex]- p->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 */ p->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 */ p->current_speed = amount*CURL_OFF_T_C(1000)/span_ms; } else /* the first second we use the average */ p->current_speed = p->ulspeed + p->dlspeed; } /* Calculations end */ return timetoshow; } #ifndef CURL_DISABLE_PROGRESS_METER static void progress_meter(struct Curl_easy *data) { 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; curl_off_t timespent = (curl_off_t)data->progress.timespent/1000000; /* seconds */ 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]) ); /* we flush the output stream to make it appear as soon as possible */ fflush(data->set.err); } #else /* progress bar disabled */ #define progress_meter(x) Curl_nop_stmt #endif /* * Curl_pgrsUpdate() returns 0 for success or the value returned by the * progress callback! */ int Curl_pgrsUpdate(struct Curl_easy *data) { struct curltime now = Curl_now(); /* what time is it */ bool showprogress = progress_calc(data, now); if(!(data->progress.flags & PGRS_HIDE)) { 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 != CURL_PROGRESSFUNC_CONTINUE) { if(result) failf(data, "Callback aborted"); return result; } } else 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 != CURL_PROGRESSFUNC_CONTINUE) { if(result) failf(data, "Callback aborted"); return result; } } if(showprogress) progress_meter(data); } return 0; }