mirror of
https://github.com/moparisthebest/pacman
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75d6149711
file:////....: Unsupported scheme.
451 lines
12 KiB
C
451 lines
12 KiB
C
/*
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* server.c
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*
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* Copyright (c) 2006 by Miklos Vajna <vmiklos@frugalware.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, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <libintl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <time.h>
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#include <errno.h>
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#include <download.h>
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/* libalpm */
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#include "server.h"
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#include "alpm_list.h"
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#include "error.h"
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#include "log.h"
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#include "alpm.h"
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#include "util.h"
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#include "handle.h"
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#include "log.h"
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#include "package.h"
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pmserver_t *_alpm_server_new(const char *url)
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{
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struct url *u;
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pmserver_t *server;
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ALPM_LOG_FUNC;
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server = (pmserver_t *)malloc(sizeof(pmserver_t));
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if(server == NULL) {
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_alpm_log(PM_LOG_ERROR, _("malloc failure: could not allocate %d bytes"), sizeof(pmserver_t));
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RET_ERR(PM_ERR_MEMORY, NULL);
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}
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memset(server, 0, sizeof(pmserver_t));
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u = downloadParseURL(url);
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if(!u) {
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_alpm_log(PM_LOG_ERROR, _("url '%s' is invalid, ignoring"), url);
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RET_ERR(PM_ERR_SERVER_BAD_URL, NULL);
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}
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if(strlen(u->scheme) == 0) {
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_alpm_log(PM_LOG_WARNING, _("url scheme not specified, assuming http"));
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strcpy(u->scheme, "http");
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}
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if(strcmp(u->scheme,"ftp") == 0 && strlen(u->user) == 0) {
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strcpy(u->user, "anonymous");
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strcpy(u->pwd, "libalpm@guest");
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}
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server->s_url = u;
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return server;
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}
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void _alpm_server_free(void *data)
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{
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pmserver_t *server = data;
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ALPM_LOG_FUNC;
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if(server == NULL) {
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return;
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}
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/* free memory */
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downloadFreeURL(server->s_url);
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FREE(server);
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}
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/* remove filename info from "s_url->doc" and return it */
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static char *strip_filename(pmserver_t *server)
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{
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char *p = NULL, *fname = NULL;
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if(!server) {
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return(NULL);
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}
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p = strrchr(server->s_url->doc, '/');
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if(p && *(++p)) {
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fname = strdup(p);
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_alpm_log(PM_LOG_DEBUG, _("stripping '%s' from '%s'"), fname, server->s_url->doc);
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*p = 0;
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}
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/* s_url->doc now contains ONLY path information. return value
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* if the file information from the original URL */
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return(fname);
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}
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/* Return a 'struct url' for this server, for downloading 'filename'. */
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static struct url *url_for_file(pmserver_t *server, const char *filename)
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{
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struct url *ret = NULL;
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char *doc = NULL;
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int doclen = 0;
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doclen = strlen(server->s_url->doc) + strlen(filename) + 2;
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doc = calloc(doclen, sizeof(char));
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if(!doc) {
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RET_ERR(PM_ERR_MEMORY, NULL);
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}
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snprintf(doc, doclen, "%s/%s", server->s_url->doc, filename);
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ret = downloadMakeURL(server->s_url->scheme,
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server->s_url->host,
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server->s_url->port,
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doc,
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server->s_url->user,
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server->s_url->pwd);
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free(doc);
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return(ret);
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}
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/*
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* Download a list of files from a list of servers
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* - if one server fails, we try the next one in the list
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*
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* RETURN: 0 for successful download, 1 on error
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*/
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int _alpm_downloadfiles(alpm_list_t *servers, const char *localpath, alpm_list_t *files)
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{
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ALPM_LOG_FUNC;
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return(_alpm_downloadfiles_forreal(servers, localpath, files, NULL, NULL));
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}
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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
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* if they are different than *mtime1. String should be in the form
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* "YYYYMMDDHHMMSS" to match the form of ftplib's FtpModDate() function.
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* - if *mtime2 is non-NULL, then it will be filled with the mtime
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* of the remote file (from MDTM FTP cmd or Last-Modified HTTP header).
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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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alpm_list_t *files, const char *mtime1, char *mtime2)
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{
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int dltotal_bytes = 0;
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alpm_list_t *lp;
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int done = 0;
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alpm_list_t *complete = NULL;
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alpm_list_t *i;
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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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for(i = servers; i && !done; i = i->next) {
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pmserver_t *server = i->data;
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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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char pkgname[PKG_NAME_LEN];
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char *p;
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fileurl = url_for_file(server, fn);
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if(!fileurl) {
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return(-1);
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}
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/* Try to get JUST the name of the package from the filename */
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memset(pkgname, 0, PKG_NAME_LEN);
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if((p = strstr(fn, PM_EXT_PKG))) {
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_alpm_pkg_splitname(fn, pkgname, NULL, 1);
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}
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if(!strlen(pkgname)) {
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/* just use the raw filename if we can't find crap */
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STRNCPY(pkgname, fn, PKG_NAME_LEN+1);
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}
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_alpm_log(PM_LOG_DEBUG, _("using '%s' for download progress"), 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 || !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"));
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fileurl->offset = (off_t)st.st_size;
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dltotal_bytes = 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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dltotal_bytes = 0;
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}
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/* libdownload does not reset the error code, reset it in 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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/* Make libdownload super verbose... worthwhile for testing */
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if(alpm_option_get_logmask() & PM_LOG_DOWNLOAD) {
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downloadDebug = 1;
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}
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if(alpm_option_get_logmask() & PM_LOG_DEBUG) {
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dlf = downloadXGet(fileurl, &ust, (handle->nopassiveftp ? "v" : "vp"));
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} else {
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dlf = downloadXGet(fileurl, &ust, (handle->nopassiveftp ? "" : "p"));
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}
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if(downloadLastErrCode != 0 || dlf == NULL) {
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_alpm_log(PM_LOG_ERROR, _("failed retrieving file '%s' from %s : %s"),
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fn, fileurl->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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continue;
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} else {
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_alpm_log(PM_LOG_DEBUG, _("connected to %s successfully"), fileurl->host);
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}
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if(ust.mtime && mtime1) {
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char strtime[15];
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_alpm_time2string(ust.mtime, strtime);
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if(strcmp(mtime1, strtime) == 0) {
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_alpm_log(PM_LOG_DEBUG, _("mtimes are identical, skipping %s"), 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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return(1);
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}
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}
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if(ust.mtime && mtime2) {
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_alpm_time2string(ust.mtime, mtime2);
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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"));
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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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dltotal_bytes = 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'"), output);
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if(dlf != NULL) {
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fclose(dlf);
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}
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return -1;
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}
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}
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/* Progress 0 - initialize */
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if(handle->dlcb) handle->dlcb(pkgname, 0, ust.size);
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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"),
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fn, downloadLastErrString);
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fclose(localf);
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fclose(dlf);
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return(-1);
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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"),
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realfile, strerror(errno));
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fclose(localf);
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fclose(dlf);
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return(-1);
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}
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}
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if(nwritten != nread) {
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}
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dltotal_bytes += nread;
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if(handle->dlcb) handle->dlcb(pkgname, dltotal_bytes, ust.size);
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}
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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, fileurl->host, fileurl->doc);
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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"), localpath);
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return(PM_ERR_CONNECT_FAILED);
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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"), 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!"));
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return(PM_ERR_FORK_FAILED);
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} else if(ret != 0) {
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/* download failed */
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_alpm_log(PM_LOG_DEBUG, _("XferCommand command returned non-zero status code (%d)"), ret);
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} else {
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/* download was successful */
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complete = alpm_list_add(complete, fn);
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if(usepart) {
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rename(output, realfile);
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}
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}
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chdir(cwd);
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}
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downloadFreeURL(fileurl);
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}
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if(alpm_list_count(complete) == alpm_list_count(files)) {
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done = 1;
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}
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}
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return(done ? 0 : -1);
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}
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char *_alpm_fetch_pkgurl(char *target)
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{
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pmserver_t *server;
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char *filename;
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struct stat st;
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ALPM_LOG_FUNC;
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server = _alpm_server_new(target);
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if(!server) {
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return(NULL);
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}
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/* strip path information from the filename */
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filename = strip_filename(server);
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if(!filename) {
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_alpm_log(PM_LOG_ERROR, _("URL does not contain a file for download"));
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return(NULL);
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}
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/* do not download the file if it exists in the current dir */
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if(stat(filename, &st) == 0) {
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_alpm_log(PM_LOG_DEBUG, _("%s has already been downloaded"), filename);
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} else {
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alpm_list_t *servers = alpm_list_add(NULL, server);
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alpm_list_t *files = alpm_list_add(NULL, filename);
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if(_alpm_downloadfiles(servers, "./", files)) {
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_alpm_log(PM_LOG_WARNING, _("failed to download %s"), target);
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return(NULL);
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}
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_alpm_log(PM_LOG_DEBUG, _("successfully downloaded %s"), filename);
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alpm_list_free(files);
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alpm_list_free(servers);
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}
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_alpm_server_free(server);
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/* return the target with the raw filename, no URL */
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return(filename);
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}
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/* vim: set ts=2 sw=2 noet: */
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