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pacman/src/pacman/download.c

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/*
* download.c
*
* Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
#include "config.h"
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <unistd.h>
#include <time.h>
#include <sys/time.h>
#include <ftplib.h>
#include <alpm.h>
/* pacman */
#include "util.h"
#include "log.h"
#include "list.h"
#include "download.h"
#include "conf.h"
/* progress bar */
static char sync_fnm[25];
static int offset;
static struct timeval t0, t;
static float rate;
static int xfered1;
static unsigned char eta_h, eta_m, eta_s;
/* pacman options */
extern config_t *config;
extern int maxcols;
static int log_progress(netbuf *ctl, int xfered, void *arg)
{
int fsz = *(int*)arg;
int pct = ((float)(xfered+offset) / fsz) * 100;
int i, cur;
struct timeval t1;
float timediff;
/* a little hard to conceal easter eggs in open-source software, but
* they're still fun. ;)
*/
static unsigned short mouth;
static unsigned int lastcur = 0;
if(config->noprogressbar) {
return(1);
}
gettimeofday(&t1, NULL);
if(xfered+offset == fsz) {
t = t0;
}
timediff = t1.tv_sec-t.tv_sec + (float)(t1.tv_usec-t.tv_usec) / 1000000;
if(xfered+offset == fsz) {
/* average download rate */
rate = xfered / (timediff * 1024);
/* total download time */
eta_s = (int)timediff;
eta_h = eta_s / 3600;
eta_s -= eta_h * 3600;
eta_m = eta_s / 60;
eta_s -= eta_m * 60;
} else if(timediff > 1) {
/* we avoid computing the rate & ETA on too small periods of time, so that
results are more significant */
rate = (xfered-xfered1) / (timediff * 1024);
xfered1 = xfered;
gettimeofday(&t, NULL);
eta_s = (fsz-(xfered+offset)) / (rate * 1024);
eta_h = eta_s / 3600;
eta_s -= eta_h * 3600;
eta_m = eta_s / 60;
eta_s -= eta_m * 60;
}
printf(" %s [", sync_fnm);
cur = (int)((maxcols-64)*pct/100);
for(i = 0; i < maxcols-64; i++) {
if(config->chomp) {
if(i < cur) {
printf("-");
} else {
if(i == cur) {
if(lastcur == cur) {
if(mouth) {
printf("\033[1;33mC\033[m");
} else {
printf("\033[1;33mc\033[m");
}
} else {
mouth = mouth == 1 ? 0 : 1;
if(mouth) {
printf("\033[1;33mC\033[m");
} else {
printf("\033[1;33mc\033[m");
}
}
} else {
printf("\033[0;37m*\033[m");
}
}
} else {
(i < cur) ? printf("#") : printf(" ");
}
}
if(rate > 1000) {
printf("] %3d%% %6dK %6.0fK/s %02d:%02d:%02d\r", pct, ((xfered+offset) / 1024), rate, eta_h, eta_m, eta_s);
} else {
printf("] %3d%% %6dK %6.1fK/s %02d:%02d:%02d\r", pct, ((xfered+offset) / 1024), rate, eta_h, eta_m, eta_s);
}
lastcur = cur;
fflush(stdout);
return(1);
}
static int copyfile(char *src, char *dest)
{
FILE *in, *out;
size_t len;
char buf[4097];
in = fopen(src, "r");
if(in == NULL) {
return(1);
}
out = fopen(dest, "w");
if(out == NULL) {
return(1);
}
while((len = fread(buf, 1, 4096, in))) {
fwrite(buf, 1, len, out);
}
fclose(in);
fclose(out);
return(0);
}
/*
* Download a list of files from a list of servers
* - if one server fails, we try the next one in the list
*
* RETURN: 0 for successful download, 1 on error
*/
int downloadfiles(list_t *servers, const char *localpath, list_t *files)
{
return(!!downloadfiles_forreal(servers, localpath, files, NULL, NULL));
}
/*
* This is the real downloadfiles, used directly by sync_synctree() to check
* modtimes on remote files.
* - if *mtime1 is non-NULL, then only download files
* if they are different than *mtime1. String should be in the form
* "YYYYMMDDHHMMSS" to match the form of ftplib's FtpModDate() function.
* - if *mtime2 is non-NULL, then it will be filled with the mtime
* of the remote file (from MDTM FTP cmd or Last-Modified HTTP header).
*
* RETURN: 0 for successful download
* -1 if the mtimes are identical
* 1 on error
*/
int downloadfiles_forreal(list_t *servers, const char *localpath,
list_t *files, const char *mtime1, char *mtime2)
{
int fsz;
netbuf *control = NULL;
list_t *lp;
int done = 0;
list_t *complete = NULL;
list_t *i;
if(files == NULL) {
return(0);
}
for(i = servers; i && !done; i = i->next) {
server_t *server = (server_t*)i->data;
if(!config->xfercommand && strcmp(server->protocol, "file")) {
if(!strcmp(server->protocol, "ftp") && !config->proxyhost) {
FtpInit();
vprint("connecting to %s:21\n", server->server);
if(!FtpConnect(server->server, &control)) {
fprintf(stderr, "error: cannot connect to %s\n", server->server);
continue;
}
if(!FtpLogin("anonymous", "arch@guest", control)) {
fprintf(stderr, "error: anonymous login failed\n");
FtpQuit(control);
continue;
}
if(!FtpChdir(server->path, control)) {
fprintf(stderr, "error: could not cwd to %s: %s\n", server->path,
FtpLastResponse(control));
FtpQuit(control);
continue;
}
if(!config->nopassiveftp) {
if(!FtpOptions(FTPLIB_CONNMODE, FTPLIB_PASSIVE, control)) {
fprintf(stderr, "warning: failed to set passive mode\n");
}
} else {
vprint("FTP passive mode not set\n");
}
} else if(config->proxyhost) {
char *host;
unsigned port;
host = (config->proxyhost) ? config->proxyhost : server->server;
port = (config->proxyport) ? config->proxyport : 80;
if(strchr(host, ':')) {
vprint("connecting to %s\n", host);
} else {
vprint("connecting to %s:%u\n", host, port);
}
if(!HttpConnect(host, port, &control)) {
fprintf(stderr, "error: cannot connect to %s\n", host);
continue;
}
}
/* set up our progress bar's callback (and idle timeout) */
if(strcmp(server->protocol, "file") && control) {
FtpOptions(FTPLIB_CALLBACK, (long)log_progress, control);
FtpOptions(FTPLIB_IDLETIME, (long)1000, control);
FtpOptions(FTPLIB_CALLBACKARG, (long)&fsz, control);
FtpOptions(FTPLIB_CALLBACKBYTES, (10*1024), control);
}
}
/* get each file in the list */
for(lp = files; lp; lp = lp->next) {
char *fn = (char *)lp->data;
if(list_is_strin(fn, complete)) {
continue;
}
if(config->xfercommand && strcmp(server->protocol, "file")) {
int ret;
int usepart = 0;
char *ptr1, *ptr2;
char origCmd[PATH_MAX];
char parsedCmd[PATH_MAX] = "";
char url[PATH_MAX];
char cwd[PATH_MAX];
/* build the full download url */
snprintf(url, PATH_MAX, "%s://%s%s%s", server->protocol, server->server,
server->path, fn);
/* replace all occurrences of %o with fn.part */
strncpy(origCmd, config->xfercommand, sizeof(origCmd));
ptr1 = origCmd;
while((ptr2 = strstr(ptr1, "%o"))) {
usepart = 1;
ptr2[0] = '\0';
strcat(parsedCmd, ptr1);
strcat(parsedCmd, fn);
strcat(parsedCmd, ".part");
ptr1 = ptr2 + 2;
}
strcat(parsedCmd, ptr1);
/* replace all occurrences of %u with the download URL */
strncpy(origCmd, parsedCmd, sizeof(origCmd));
parsedCmd[0] = '\0';
ptr1 = origCmd;
while((ptr2 = strstr(ptr1, "%u"))) {
ptr2[0] = '\0';
strcat(parsedCmd, ptr1);
strcat(parsedCmd, url);
ptr1 = ptr2 + 2;
}
strcat(parsedCmd, ptr1);
/* cwd to the download directory */
getcwd(cwd, PATH_MAX);
if(chdir(localpath)) {
fprintf(stderr, "error: could not chdir to %s\n", localpath);
return(1);
}
/* execute the parsed command via /bin/sh -c */
vprint("running command: %s\n", parsedCmd);
ret = system(parsedCmd);
if(ret == -1) {
fprintf(stderr, "error running XferCommand: fork failed!\n");
return(1);
} else if(ret != 0) {
/* download failed */
vprint("XferCommand command returned non-zero status code (%d)\n", ret);
} else {
/* download was successful */
complete = list_add(complete, fn);
if(usepart) {
char fnpart[PATH_MAX];
/* rename "output.part" file to "output" file */
snprintf(fnpart, PATH_MAX, "%s.part", fn);
rename(fnpart, fn);
}
}
chdir(cwd);
} else {
char output[PATH_MAX];
int j, filedone = 0;
char *ptr;
struct stat st;
snprintf(output, PATH_MAX, "%s/%s.part", localpath, fn);
strncpy(sync_fnm, fn, 24);
/* drop filename extension */
ptr = strstr(fn, PM_EXT_DB);
if(ptr && (ptr-fn) < 24) {
sync_fnm[ptr-fn] = '\0';
}
ptr = strstr(fn, PM_EXT_PKG);
if(ptr && (ptr-fn) < 24) {
sync_fnm[ptr-fn] = '\0';
}
for(j = strlen(sync_fnm); j < 24; j++) {
sync_fnm[j] = ' ';
}
sync_fnm[24] = '\0';
offset = 0;
/* ETA setup */
gettimeofday(&t0, NULL);
t = t0;
rate = 0;
xfered1 = 0;
eta_h = 0;
eta_m = 0;
eta_s = 0;
if(!strcmp(server->protocol, "ftp") && !config->proxyhost) {
if(!FtpSize(fn, &fsz, FTPLIB_IMAGE, control)) {
fprintf(stderr, "warning: failed to get filesize for %s\n", fn);
}
/* check mtimes */
if(mtime1) {
char fmtime[64];
if(!FtpModDate(fn, fmtime, sizeof(fmtime)-1, control)) {
fprintf(stderr, "warning: failed to get mtime for %s\n", fn);
} else {
strtrim(fmtime);
if(mtime1 && !strcmp(mtime1, fmtime)) {
/* mtimes are identical, skip this file */
vprint("mtimes are identical, skipping %s\n", fn);
filedone = -1;
complete = list_add(complete, fn);
} else {
if(mtime2) {
strncpy(mtime2, fmtime, 15); /* YYYYMMDDHHMMSS (=14b) */
mtime2[14] = '\0';
}
}
}
}
if(!filedone) {
if(!stat(output, &st)) {
offset = (int)st.st_size;
if(!FtpRestart(offset, control)) {
fprintf(stderr, "warning: failed to resume download -- restarting\n");
/* can't resume: */
/* unlink the file in order to restart download from scratch */
unlink(output);
}
}
if(!FtpGet(output, fn, FTPLIB_IMAGE, control)) {
fprintf(stderr, "\nfailed downloading %s from %s: %s\n",
fn, server->server, FtpLastResponse(control));
/* we leave the partially downloaded file in place so it can be resumed later */
} else {
filedone = 1;
}
}
} else if(!strcmp(server->protocol, "http") || (config->proxyhost && strcmp(server->protocol, "file"))) {
char src[PATH_MAX];
char *host;
unsigned port;
struct tm fmtime1;
struct tm fmtime2;
memset(&fmtime1, 0, sizeof(struct tm));
memset(&fmtime2, 0, sizeof(struct tm));
if(!strcmp(server->protocol, "http") && !config->proxyhost) {
/* HTTP servers hang up after each request (but not proxies), so
* we have to re-connect for each file.
*/
host = (config->proxyhost) ? config->proxyhost : server->server;
port = (config->proxyhost) ? config->proxyport : 80;
if(strchr(host, ':')) {
vprint("connecting to %s\n", host);
} else {
vprint("connecting to %s:%u\n", host, port);
}
if(!HttpConnect(host, port, &control)) {
fprintf(stderr, "error: cannot connect to %s\n", host);
continue;
}
/* set up our progress bar's callback (and idle timeout) */
if(strcmp(server->protocol, "file") && control) {
FtpOptions(FTPLIB_CALLBACK, (long)log_progress, control);
FtpOptions(FTPLIB_IDLETIME, (long)1000, control);
FtpOptions(FTPLIB_CALLBACKARG, (long)&fsz, control);
FtpOptions(FTPLIB_CALLBACKBYTES, (10*1024), control);
}
}
if(!stat(output, &st)) {
offset = (int)st.st_size;
}
if(!config->proxyhost) {
snprintf(src, PATH_MAX, "%s%s", server->path, fn);
} else {
snprintf(src, PATH_MAX, "%s://%s%s%s", server->protocol, server->server, server->path, fn);
}
if(mtime1 && strlen(mtime1)) {
struct tm tmref;
time_t t, tref;
int diff;
/* date conversion from YYYYMMDDHHMMSS to "rfc1123-date" */
sscanf(mtime1, "%4d%2d%2d%2d%2d%2d",
&fmtime1.tm_year, &fmtime1.tm_mon, &fmtime1.tm_mday,
&fmtime1.tm_hour, &fmtime1.tm_min, &fmtime1.tm_sec);
fmtime1.tm_year -= 1900;
fmtime1.tm_mon--;
/* compute the week day because some web servers (like lighttpd) need them. */
/* we set tmref to "Thu, 01 Jan 1970 00:00:00" */
memset(&tmref, 0, sizeof(struct tm));
tmref.tm_mday = 1;
tref = mktime(&tmref);
/* then we compute the difference with mtime1 */
t = mktime(&fmtime1);
diff = ((t-tref)/3600/24)%7;
fmtime1.tm_wday = diff+(diff >= 3 ? -3 : 4);
}
fmtime2.tm_year = 0;
if(!HttpGet(server->server, output, src, &fsz, control, offset,
(mtime1) ? &fmtime1 : NULL, (mtime2) ? &fmtime2 : NULL)) {
if(strstr(FtpLastResponse(control), "304")) {
vprint("mtimes are identical, skipping %s\n", fn);
filedone = -1;
complete = list_add(complete, fn);
} else {
fprintf(stderr, "\nfailed downloading %s from %s: %s\n", src, server->server, FtpLastResponse(control));
/* we leave the partially downloaded file in place so it can be resumed later */
}
} else {
if(mtime2) {
if(fmtime2.tm_year) {
/* date conversion from "rfc1123-date" to YYYYMMDDHHMMSS */
sprintf(mtime2, "%4d%02d%02d%02d%02d%02d",
fmtime2.tm_year+1900, fmtime2.tm_mon+1, fmtime2.tm_mday,
fmtime2.tm_hour, fmtime2.tm_min, fmtime2.tm_sec);
} else {
fprintf(stderr, "warning: failed to get mtime for %s\n", fn);
}
}
filedone = 1;
}
} else if(!strcmp(server->protocol, "file")) {
char src[PATH_MAX];
snprintf(src, PATH_MAX, "%s%s", server->path, fn);
vprint("copying %s to %s/%s\n", src, localpath, fn);
/* local repository, just copy the file */
if(copyfile(src, output)) {
fprintf(stderr, "failed copying %s\n", src);
} else {
filedone = 1;
}
}
if(filedone > 0) {
char completefile[PATH_MAX];
if(!strcmp(server->protocol, "file")) {
char out[56];
printf(" %s [", sync_fnm);
STRNCPY(out, server->path, 33);
printf("%s", out);
for(j = strlen(out); j < maxcols-64; j++) {
printf(" ");
}
fputs("] 100% LOCAL ", stdout);
} else {
log_progress(control, fsz-offset, &fsz);
}
complete = list_add(complete, fn);
/* rename "output.part" file to "output" file */
snprintf(completefile, PATH_MAX, "%s/%s", localpath, fn);
rename(output, completefile);
} else if(filedone < 0) {
return(-1);
}
printf("\n");
fflush(stdout);
}
}
if(!config->xfercommand) {
if(!strcmp(server->protocol, "ftp") && !config->proxyhost) {
FtpQuit(control);
} else if(!strcmp(server->protocol, "http") || (config->proxyhost && strcmp(server->protocol, "file"))) {
HttpQuit(control);
}
}
if(list_count(complete) == list_count(files)) {
done = 1;
}
}
return(!done);
}
char *fetch_pkgurl(char *target)
{
char spath[PATH_MAX];
char url[PATH_MAX];
char *host, *path, *fn;
struct stat buf;
strncpy(url, target, PATH_MAX);
host = strstr(url, "://");
*host = '\0';
host += 3;
path = strchr(host, '/');
*path = '\0';
path++;
fn = strrchr(path, '/');
if(fn) {
*fn = '\0';
if(path[0] == '/') {
snprintf(spath, PATH_MAX, "%s/", path);
} else {
snprintf(spath, PATH_MAX, "/%s/", path);
}
fn++;
} else {
fn = path;
strcpy(spath, "/");
}
/* do not download the file if it exists in the current dir
*/
if(stat(fn, &buf) == 0) {
vprint(" %s is already in the current directory\n", fn);
} else {
server_t *server;
list_t *servers = NULL;
list_t *files;
server = (server_t *)malloc(sizeof(server_t));
if(server == NULL) {
fprintf(stderr, "error: failed to allocate %d bytes\n", sizeof(server_t));
return(NULL);
}
server->protocol = url;
server->server = host;
server->path = spath;
servers = list_add(servers, server);
files = list_add(NULL, fn);
if(downloadfiles(servers, ".", files)) {
ERR(NL, "failed to download %s\n", target);
return(NULL);
}
FREELISTPTR(files);
FREELIST(servers);
}
/* return the target with the raw filename, no URL */
return(strndup(fn, PATH_MAX));
}
/* vim: set ts=2 sw=2 noet: */
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