xbps/lib/repository_sync_index.c

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/*-
* Copyright (c) 2009-2011 Juan Romero Pardines.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/utsname.h>
#include <sys/stat.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "xbps_api_impl.h"
#include "fetch.h"
/**
* @file lib/repository_sync_index.c
* @brief Repository package index synchronization routines
* @defgroup reposync Repository package index synchronization functions
*
* Functions to manipulate repository package index plist file
* synchronizations.
*/
char HIDDEN *
xbps_get_remote_repo_string(const char *uri)
{
struct url *url;
size_t i;
char *p;
if ((url = fetchParseURL(uri)) == NULL)
return NULL;
/*
* Replace '.' ':' and '/' characters with underscores, so that
* provided URL:
*
* http://nocturno.local:8080/blah/xbps/binpkg-repo
*
* becomes:
*
* http___nocturno_local_8080_blah_xbps_binpkg_repo
*
*/
if (url->port != 0)
p = xbps_xasprintf("%s://%s:%u%s", url->scheme,
url->host, url->port, url->doc);
else
p = xbps_xasprintf("%s://%s%s", url->scheme,
url->host, url->doc);
fetchFreeURL(url);
if (p == NULL)
return NULL;
for (i = 0; i < strlen(p); i++) {
if (p[i] == '.' || p[i] == '/' || p[i] == ':')
p[i] = '_';
}
return p;
}
/*
* Returns -1 on error, 0 if transfer was not necessary (local/remote
* size and/or mtime match) and 1 if downloaded successfully.
*/
int
xbps_repository_sync_pkg_index(const char *uri)
{
struct xbps_handle *xhp;
struct url *url = NULL;
struct utsname un;
struct stat st;
const char *fetch_outputdir;
char *rpidx, *lrepodir, *uri_fixedp;
char *metadir, *tmp_metafile, *lrepofile;
int sverrno, rv = 0;
bool only_sync = false;
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assert(uri != NULL);
tmp_metafile = rpidx = lrepodir = lrepofile = NULL;
xhp = xbps_handle_get();
/* ignore non remote repositories */
if (!xbps_check_is_repository_uri_remote(uri))
return 0;
if (uname(&un) == -1)
return -1;
if ((url = fetchParseURL(uri)) == NULL)
return -1;
uri_fixedp = xbps_get_remote_repo_string(uri);
if (uri_fixedp == NULL) {
fetchFreeURL(url);
return -1;
}
/*
* Create metadir if necessary.
*/
metadir = xbps_xasprintf("%s/%s",
prop_string_cstring_nocopy(xhp->rootdir), XBPS_META_PATH);
if (metadir == NULL) {
rv = -1;
goto out;
}
if ((rv = xbps_mkpath(metadir, 0755)) == -1) {
xbps_dbg_printf("[rsyncidx] failed to create metadir `%s': "
"%s\n", metadir, strerror(errno));
goto out;
}
/*
* Remote repository pkg-index.plist full URL.
*/
rpidx = xbps_xasprintf("%s/%s/%s", uri, un.machine, XBPS_PKGINDEX);
if (rpidx == NULL) {
rv = -1;
goto out;
}
/*
* Save temporary file in XBPS_META_PATH, and rename if it
* was downloaded successfully.
*/
tmp_metafile = xbps_xasprintf("%s/%s", metadir, XBPS_PKGINDEX);
if (tmp_metafile == NULL) {
rv = -1;
goto out;
}
/*
* Full path to repository directory to store the pkg-index.plist
* file.
*/
lrepodir = xbps_xasprintf("%s/%s/%s",
prop_string_cstring_nocopy(xhp->rootdir), XBPS_META_PATH, uri_fixedp);
if (lrepodir == NULL) {
rv = -1;
goto out;
}
/*
* If directory exists probably the pkg-index.plist file
* was downloaded previously...
*/
rv = stat(lrepodir, &st);
if (rv == 0 && S_ISDIR(st.st_mode)) {
only_sync = true;
fetch_outputdir = lrepodir;
} else
fetch_outputdir = metadir;
if (xhp->xbps_transaction_cb) {
xhp->xtcd->state = XBPS_TRANS_STATE_REPOSYNC;
xhp->xtcd->repourl = uri;
xhp->xbps_transaction_cb(xhp->xtcd);
}
/*
* Download pkg-index.plist file from repository.
*/
if (xbps_fetch_file(rpidx, fetch_outputdir, true, NULL) == -1) {
sverrno = errno;
if (fetchLastErrCode)
rv = fetchLastErrCode;
else
rv = sverrno;
if (xhp->xbps_transaction_err_cb) {
xhp->xtcd->state = XBPS_TRANS_STATE_REPOSYNC;
xhp->xtcd->repourl = uri;
xhp->xtcd->err = rv;
xhp->xbps_transaction_err_cb(xhp->xtcd);
}
rv = -1;
errno = sverrno;
goto out;
}
if (only_sync)
goto out;
lrepofile = xbps_xasprintf("%s/%s", lrepodir, XBPS_PKGINDEX);
if (lrepofile == NULL) {
rv = -1;
goto out;
}
/*
* Create local repodir to store pkg-index.plist file.
*/
if ((rv = xbps_mkpath(lrepodir, 0755)) == -1) {
xbps_dbg_printf("[rsyncidx] failed to create repodir "
"`%s': %s\n", lrepodir, strerror(errno));
goto out;
}
/*
* Rename to destination file now it has been fetched successfully.
*/
if ((rv = rename(tmp_metafile, lrepofile)) == -1)
xbps_dbg_printf("[rsyncidx] failed to rename `%s' to "
"`%s': %s\n", tmp_metafile, lrepofile, strerror(errno));
else
rv = 1; /* success */
out:
if (rpidx)
free(rpidx);
if (lrepodir)
free(lrepodir);
if (metadir)
free(metadir);
if (tmp_metafile)
free(tmp_metafile);
if (lrepofile)
free(lrepofile);
if (url)
fetchFreeURL(url);
if (uri_fixedp)
free(uri_fixedp);
return rv;
}