2008-01-22 22:36:11 -05:00
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/*
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* download.c
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*
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* Copyright (c) 2002-2008 by Judd Vinet <jvinet@zeroflux.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <errno.h>
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#include <string.h>
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#include <unistd.h>
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#include <download.h> /* libdownload */
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/* libalpm */
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#include "dload.h"
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#include "alpm_list.h"
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#include "alpm.h"
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#include "log.h"
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#include "util.h"
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#include "error.h"
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#include "handle.h"
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2008-01-22 23:49:45 -05:00
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/* Return a 'struct url' for this server, for downloading 'filename'. */
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static struct url *url_for_file(const char *url, const char *filename)
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2008-01-22 22:36:11 -05:00
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{
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2008-01-22 23:49:45 -05:00
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struct url *ret = NULL;
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char *buf = NULL;
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int len;
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/* print url + filename into a buffer */
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len = strlen(url) + strlen(filename) + 2;
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CALLOC(buf, len, sizeof(char), RET_ERR(PM_ERR_MEMORY, NULL));
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snprintf(buf, len, "%s/%s", url, filename);
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ret = downloadParseURL(buf);
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FREE(buf);
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if(!ret) {
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_alpm_log(PM_LOG_ERROR, _("url '%s' is invalid\n"), buf);
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RET_ERR(PM_ERR_SERVER_BAD_URL, NULL);
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2008-01-22 22:36:11 -05:00
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}
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2008-01-22 23:49:45 -05:00
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/* if no URL scheme specified, assume HTTP */
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if(strlen(ret->scheme) == 0) {
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_alpm_log(PM_LOG_WARNING, _("url scheme not specified, assuming HTTP\n"));
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strcpy(ret->scheme, SCHEME_HTTP);
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}
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/* add a user & password for anonymous FTP */
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if(strcmp(ret->scheme,SCHEME_FTP) == 0 && strlen(ret->user) == 0) {
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strcpy(ret->user, "anonymous");
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strcpy(ret->pwd, "libalpm@guest");
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2008-01-22 22:36:11 -05:00
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}
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return(ret);
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}
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2008-01-22 23:00:12 -05:00
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/* TODO temporary private declaration */
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int _alpm_downloadfiles_forreal(alpm_list_t *servers, const char *localpath,
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2008-01-23 00:11:31 -05:00
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alpm_list_t *files, time_t mtime1, time_t *mtime2);
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2008-01-22 23:00:12 -05:00
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/* TODO implement these as real functions */
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int _alpm_download_single_file(const char *filename,
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alpm_list_t *servers, const char *localpath,
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time_t mtimeold, time_t *mtimenew)
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2008-01-22 22:36:11 -05:00
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{
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2008-01-22 23:00:12 -05:00
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alpm_list_t *files = NULL;
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int ret;
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/* make a temp one element list */
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files = alpm_list_add(files, (char*)filename);
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ret = _alpm_downloadfiles_forreal(servers, localpath,
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2008-01-23 00:11:31 -05:00
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files, mtimeold, mtimenew);
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2008-01-22 23:00:12 -05:00
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/* free list (data was NOT duplicated) */
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alpm_list_free(files);
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return(ret);
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}
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int _alpm_download_files(alpm_list_t *files,
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alpm_list_t *servers, const char *localpath)
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{
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int ret;
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ret = _alpm_downloadfiles_forreal(servers, localpath,
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2008-01-23 00:11:31 -05:00
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files, 0, NULL);
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2008-01-22 23:00:12 -05:00
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return(ret);
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2008-01-22 22:36:11 -05:00
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}
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2008-01-22 23:00:12 -05:00
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2008-01-22 22:36:11 -05:00
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/*
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* This is the real downloadfiles, used directly by sync_synctree() to check
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* modtimes on remote files.
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* - if mtime1 is non-NULL, then only download files if they are different
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* than mtime1.
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* - if *mtime2 is non-NULL, it will be filled with the mtime of the remote
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* file.
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*
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* RETURN: 0 for successful download
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* 1 if the mtimes are identical
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* -1 on error
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*/
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int _alpm_downloadfiles_forreal(alpm_list_t *servers, const char *localpath,
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2008-01-23 00:11:31 -05:00
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alpm_list_t *files, time_t mtime1, time_t *mtime2)
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2008-01-22 22:36:11 -05:00
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{
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int dl_thisfile = 0;
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alpm_list_t *lp;
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alpm_list_t *complete = NULL;
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alpm_list_t *i;
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2008-02-27 11:45:01 -05:00
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int ret = -1;
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char *pkgname = NULL;
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2008-01-22 22:36:11 -05:00
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ALPM_LOG_FUNC;
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if(files == NULL) {
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return(0);
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}
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2008-02-27 11:45:01 -05:00
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for(i = servers; i; i = i->next) {
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2008-01-22 23:49:45 -05:00
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const char *server = i->data;
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2008-01-22 22:36:11 -05:00
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/* get each file in the list */
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for(lp = files; lp; lp = lp->next) {
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struct url *fileurl = NULL;
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char realfile[PATH_MAX];
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char output[PATH_MAX];
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char *fn = (char *)lp->data;
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fileurl = url_for_file(server, fn);
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if(!fileurl) {
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2008-02-27 11:45:01 -05:00
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goto cleanup;
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2008-01-22 22:36:11 -05:00
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}
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/* pass the raw filename for passing to the callback function */
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2008-02-27 11:45:01 -05:00
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FREE(pkgname);
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2008-01-22 22:36:11 -05:00
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STRDUP(pkgname, fn, (void)0);
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_alpm_log(PM_LOG_DEBUG, "using '%s' for download progress\n", pkgname);
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snprintf(realfile, PATH_MAX, "%s%s", localpath, fn);
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snprintf(output, PATH_MAX, "%s%s.part", localpath, fn);
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if(alpm_list_find_str(complete, fn)) {
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continue;
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}
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if(!handle->xfercommand
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|| !strcmp(fileurl->scheme, "file")) {
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FILE *dlf, *localf = NULL;
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struct url_stat ust;
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struct stat st;
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int chk_resume = 0;
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if(stat(output, &st) == 0 && st.st_size > 0) {
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_alpm_log(PM_LOG_DEBUG, "existing file found, using it\n");
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fileurl->offset = (off_t)st.st_size;
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dl_thisfile = st.st_size;
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localf = fopen(output, "a");
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chk_resume = 1;
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} else {
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fileurl->offset = (off_t)0;
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dl_thisfile = 0;
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}
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/* libdownload does not reset the error code, reset it in
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* the case of previous errors */
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downloadLastErrCode = 0;
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/* 10s timeout - TODO make a config option */
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downloadTimeout = 10000;
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dlf = downloadXGet(fileurl, &ust, (handle->nopassiveftp ? "" : "p"));
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if(downloadLastErrCode != 0 || dlf == NULL) {
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const char *host = _("disk");
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if(strcmp(SCHEME_FILE, fileurl->scheme) != 0) {
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host = fileurl->host;
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}
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_alpm_log(PM_LOG_ERROR, _("failed retrieving file '%s' from %s : %s\n"),
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fn, host, downloadLastErrString);
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if(localf != NULL) {
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fclose(localf);
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}
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/* try the next server */
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downloadFreeURL(fileurl);
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continue;
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} else {
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_alpm_log(PM_LOG_DEBUG, "connected to %s successfully\n", fileurl->host);
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}
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if(ust.mtime && mtime1 && ust.mtime == mtime1) {
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_alpm_log(PM_LOG_DEBUG, "mtimes are identical, skipping %s\n", fn);
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complete = alpm_list_add(complete, fn);
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if(localf != NULL) {
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fclose(localf);
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}
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if(dlf != NULL) {
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fclose(dlf);
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}
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downloadFreeURL(fileurl);
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2008-02-27 11:45:01 -05:00
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ret = 1;
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goto cleanup;
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2008-01-22 22:36:11 -05:00
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}
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if(ust.mtime && mtime2) {
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*mtime2 = ust.mtime;
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}
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if(chk_resume && fileurl->offset == 0) {
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_alpm_log(PM_LOG_WARNING, _("cannot resume download, starting over\n"));
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if(localf != NULL) {
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fclose(localf);
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localf = NULL;
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}
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}
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if(localf == NULL) {
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_alpm_rmrf(output);
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fileurl->offset = (off_t)0;
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dl_thisfile = 0;
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localf = fopen(output, "w");
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if(localf == NULL) { /* still null? */
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_alpm_log(PM_LOG_ERROR, _("cannot write to file '%s'\n"), output);
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if(dlf != NULL) {
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fclose(dlf);
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}
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downloadFreeURL(fileurl);
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2008-02-27 11:45:01 -05:00
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goto cleanup;
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2008-01-22 22:36:11 -05:00
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}
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}
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/* Progress 0 - initialize */
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if(handle->dlcb) {
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2008-01-23 00:11:31 -05:00
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handle->dlcb(pkgname, 0, ust.size);
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2008-01-22 22:36:11 -05:00
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}
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int nread = 0;
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char buffer[PM_DLBUF_LEN];
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while((nread = fread(buffer, 1, PM_DLBUF_LEN, dlf)) > 0) {
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if(ferror(dlf)) {
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_alpm_log(PM_LOG_ERROR, _("error downloading '%s': %s\n"),
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fn, downloadLastErrString);
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fclose(localf);
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fclose(dlf);
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downloadFreeURL(fileurl);
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2008-02-27 11:45:01 -05:00
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goto cleanup;
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2008-01-22 22:36:11 -05:00
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}
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int nwritten = 0;
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while(nwritten < nread) {
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nwritten += fwrite(buffer, 1, (nread - nwritten), localf);
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if(ferror(localf)) {
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_alpm_log(PM_LOG_ERROR, _("error writing to file '%s': %s\n"),
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realfile, strerror(errno));
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fclose(localf);
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fclose(dlf);
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downloadFreeURL(fileurl);
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2008-02-27 11:45:01 -05:00
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goto cleanup;
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2008-01-22 22:36:11 -05:00
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}
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}
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if(nwritten != nread) {
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}
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dl_thisfile += nread;
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if(handle->dlcb) {
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2008-01-23 00:11:31 -05:00
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handle->dlcb(pkgname, dl_thisfile, ust.size);
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2008-01-22 22:36:11 -05:00
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}
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}
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downloadFreeURL(fileurl);
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fclose(localf);
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fclose(dlf);
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rename(output, realfile);
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complete = alpm_list_add(complete, fn);
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} else {
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int ret;
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int usepart = 0;
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char *ptr1, *ptr2;
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char origCmd[PATH_MAX];
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char parsedCmd[PATH_MAX] = "";
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char url[PATH_MAX];
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char cwd[PATH_MAX];
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/* build the full download url */
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snprintf(url, PATH_MAX, "%s://%s%s", fileurl->scheme,
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fileurl->host, fileurl->doc);
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/* we don't need this anymore */
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downloadFreeURL(fileurl);
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/* replace all occurrences of %o with fn.part */
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strncpy(origCmd, handle->xfercommand, sizeof(origCmd));
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ptr1 = origCmd;
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while((ptr2 = strstr(ptr1, "%o"))) {
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usepart = 1;
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ptr2[0] = '\0';
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strcat(parsedCmd, ptr1);
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strcat(parsedCmd, output);
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ptr1 = ptr2 + 2;
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}
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strcat(parsedCmd, ptr1);
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/* replace all occurrences of %u with the download URL */
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strncpy(origCmd, parsedCmd, sizeof(origCmd));
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parsedCmd[0] = '\0';
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ptr1 = origCmd;
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while((ptr2 = strstr(ptr1, "%u"))) {
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ptr2[0] = '\0';
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strcat(parsedCmd, ptr1);
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strcat(parsedCmd, url);
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ptr1 = ptr2 + 2;
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}
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strcat(parsedCmd, ptr1);
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/* cwd to the download directory */
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getcwd(cwd, PATH_MAX);
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if(chdir(localpath)) {
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_alpm_log(PM_LOG_WARNING, _("could not chdir to %s\n"), localpath);
|
2008-02-27 11:45:01 -05:00
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pm_errno = PM_ERR_CONNECT_FAILED;
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goto cleanup;
|
2008-01-22 22:36:11 -05:00
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}
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/* execute the parsed command via /bin/sh -c */
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_alpm_log(PM_LOG_DEBUG, "running command: %s\n", parsedCmd);
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ret = system(parsedCmd);
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if(ret == -1) {
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_alpm_log(PM_LOG_WARNING, _("running XferCommand: fork failed!\n"));
|
2008-02-27 11:45:01 -05:00
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|
|
pm_errno = PM_ERR_FORK_FAILED;
|
|
|
|
goto cleanup;
|
2008-01-22 22:36:11 -05:00
|
|
|
} else if(ret != 0) {
|
|
|
|
/* download failed */
|
|
|
|
_alpm_log(PM_LOG_DEBUG, "XferCommand command returned non-zero status code (%d)\n", ret);
|
|
|
|
} else {
|
|
|
|
/* download was successful */
|
|
|
|
complete = alpm_list_add(complete, fn);
|
|
|
|
if(usepart) {
|
|
|
|
rename(output, realfile);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
chdir(cwd);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if(alpm_list_count(complete) == alpm_list_count(files)) {
|
2008-02-27 11:45:01 -05:00
|
|
|
ret = 0;
|
|
|
|
goto cleanup;
|
2008-01-22 22:36:11 -05:00
|
|
|
}
|
|
|
|
}
|
2008-02-27 11:45:01 -05:00
|
|
|
|
|
|
|
cleanup:
|
|
|
|
FREE(pkgname);
|
2008-01-22 22:36:11 -05:00
|
|
|
alpm_list_free(complete);
|
|
|
|
|
2008-02-27 11:45:01 -05:00
|
|
|
return(ret);
|
2008-01-22 22:36:11 -05:00
|
|
|
}
|
|
|
|
|
|
|
|
/** Fetch a remote pkg.
|
|
|
|
* @param url URL of the package to download
|
|
|
|
* @return the downloaded filepath on success, NULL on error
|
|
|
|
* @addtogroup alpm_misc
|
|
|
|
*/
|
|
|
|
char SYMEXPORT *alpm_fetch_pkgurl(const char *url)
|
|
|
|
{
|
2008-01-22 23:49:45 -05:00
|
|
|
/* TODO this method will not work at all right now */
|
2008-01-22 22:36:11 -05:00
|
|
|
char *filename, *filepath;
|
|
|
|
const char *cachedir;
|
|
|
|
|
|
|
|
ALPM_LOG_FUNC;
|
|
|
|
|
2008-01-22 23:49:45 -05:00
|
|
|
filename = NULL;
|
2008-01-22 22:36:11 -05:00
|
|
|
|
|
|
|
/* find a valid cache dir to download to */
|
|
|
|
cachedir = _alpm_filecache_setup();
|
|
|
|
|
|
|
|
/* download the file */
|
2008-01-22 23:49:45 -05:00
|
|
|
if(_alpm_download_single_file(NULL, NULL, cachedir, 0, NULL)) {
|
2008-01-22 22:36:11 -05:00
|
|
|
_alpm_log(PM_LOG_WARNING, _("failed to download %s\n"), url);
|
|
|
|
return(NULL);
|
|
|
|
}
|
2008-01-22 23:49:45 -05:00
|
|
|
_alpm_log(PM_LOG_DEBUG, "successfully downloaded %s\n", url);
|
2008-01-22 22:36:11 -05:00
|
|
|
|
|
|
|
/* we should be able to find the file the second time around */
|
|
|
|
filepath = _alpm_filecache_find(filename);
|
|
|
|
return(filepath);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* vim: set ts=2 sw=2 noet: */
|