Remove pmserver_t abstraction

Remove what was a pretty weird abstraction in the libalpm backend. Instead
of parsing server URLs as we get them (of which we don't usually use more
than a handful anyway), wait until they are actually used, which allows us
to store them as a simple string list instead. This allows us to remove a
lot of code, and will greatly simplify the continuing refactoring of the
download code.

Signed-off-by: Dan McGee <dan@archlinux.org>

lib/libalpm/Makefile.am

@@ -36,7 +36,6 @@ libalpm_la_SOURCES = \
 	md5.h md5.c \
 	package.h package.c \
 	remove.h remove.c \
-	server.h server.c \
 	sync.h sync.c \
 	trans.h trans.c \
 	util.h util.c

lib/libalpm/alpm.h

@@ -45,7 +45,6 @@ typedef struct __pmdb_t pmdb_t;
 typedef struct __pmpkg_t pmpkg_t;
 typedef struct __pmdelta_t pmdelta_t;
 typedef struct __pmgrp_t pmgrp_t;
-typedef struct __pmserver_t pmserver_t;
 typedef struct __pmtrans_t pmtrans_t;
 typedef struct __pmsyncpkg_t pmsyncpkg_t;
 typedef struct __pmdepend_t pmdepend_t;

lib/libalpm/db.c

@@ -41,7 +41,6 @@
 #include "log.h"
 #include "util.h"
 #include "error.h"
-#include "server.h"
 #include "dload.h"
 #include "handle.h"
 #include "cache.h"
@@ -192,14 +191,9 @@ int SYMEXPORT alpm_db_setserver(pmdb_t *db, const char *url)
 	}
 
 	if(url && strlen(url)) {
-		pmserver_t *server;
-		if((server = _alpm_server_new(url)) == NULL) {
-			/* pm_errno is set by _alpm_server_new */
-			return(-1);
-		}
-		db->servers = alpm_list_add(db->servers, server);
-		_alpm_log(PM_LOG_DEBUG, "adding new server to database '%s': protocol '%s', server '%s', path '%s'\n",
-							db->treename, server->s_url->scheme, server->s_url->host, server->s_url->doc);
+		db->servers = alpm_list_add(db->servers, strdup(url));
+		_alpm_log(PM_LOG_DEBUG, "adding new server URL to database '%s': %s\n",
+				db->treename, url);
 	} else {
 		FREELIST(db->servers);
 		_alpm_log(PM_LOG_DEBUG, "serverlist flushed for '%s'\n", db->treename);
@@ -317,8 +311,7 @@ const char SYMEXPORT *alpm_db_get_name(const pmdb_t *db)
  */
 const char SYMEXPORT *alpm_db_get_url(const pmdb_t *db)
 {
-	char path[PATH_MAX];
-	pmserver_t *s;
+	char *url;
 
 	ALPM_LOG_FUNC;
 
@@ -326,10 +319,9 @@ const char SYMEXPORT *alpm_db_get_url(const pmdb_t *db)
 	ASSERT(handle != NULL, return(NULL));
 	ASSERT(db != NULL, return(NULL));
 
-	s = (pmserver_t*)db->servers->data;
+	url = (char*)db->servers->data;
 
-	snprintf(path, PATH_MAX, "%s://%s%s", s->s_url->scheme, s->s_url->host, s->s_url->doc);
-	return strdup(path);
+	return(url);
 }
 
 
@@ -451,17 +443,12 @@ pmdb_t *_alpm_db_new(const char *dbpath, const char *treename)
 
 void _alpm_db_free(pmdb_t *db)
 {
-	alpm_list_t *tmp;
-
 	ALPM_LOG_FUNC;
 
 	/* cleanup pkgcache */
 	_alpm_db_free_pkgcache(db);
 	/* cleanup server list */
-	for(tmp = db->servers; tmp; tmp = alpm_list_next(tmp)) {
-		_alpm_server_free(tmp->data);
-	}
-	alpm_list_free(db->servers);
+	FREELIST(db->servers);
 	FREE(db->path);
 	FREE(db);
 

lib/libalpm/dload.c

@@ -34,48 +34,37 @@
 #include "util.h"
 #include "error.h"
 #include "handle.h"
-#include "server.h"
-
-/* remove filename info from "s_url->doc" and return it */
-static char *strip_filename(pmserver_t *server)
-{
-	char *p = NULL, *fname = NULL;
-	if(!server) {
-		return(NULL);
-	}
-
-	p = strrchr(server->s_url->doc, '/');
-	if(p && *(++p)) {
-		fname = strdup(p);
-		_alpm_log(PM_LOG_DEBUG, "stripping '%s' from '%s'\n",
-				fname, server->s_url->doc);
-		*p = 0;
-	}
-
-	/* s_url->doc now contains ONLY path information.  return value
-	 * if the file information from the original URL */
-	return(fname);
-}
-
 
 /* Return a 'struct url' for this server, for downloading 'filename'. */
-static struct url *url_for_file(pmserver_t *server, const char *filename)
+static struct url *url_for_file(const char *url, const char *filename)
 {
 	struct url *ret = NULL;
-	char *doc = NULL;
-	int doclen = 0;
+	char *buf = NULL;
+	int len;
 
-	doclen = strlen(server->s_url->doc) + strlen(filename) + 2;
-	CALLOC(doc, doclen, sizeof(char), RET_ERR(PM_ERR_MEMORY, NULL));
+	/* print url + filename into a buffer */
+	len = strlen(url) + strlen(filename) + 2;
+	CALLOC(buf, len, sizeof(char), RET_ERR(PM_ERR_MEMORY, NULL));
+	snprintf(buf, len, "%s/%s", url, filename);
+
+	ret = downloadParseURL(buf);
+	FREE(buf);
+	if(!ret) {
+		_alpm_log(PM_LOG_ERROR, _("url '%s' is invalid\n"), buf);
+		RET_ERR(PM_ERR_SERVER_BAD_URL, NULL);
+	}
+
+	/* if no URL scheme specified, assume HTTP */
+	if(strlen(ret->scheme) == 0) {
+		_alpm_log(PM_LOG_WARNING, _("url scheme not specified, assuming HTTP\n"));
+		strcpy(ret->scheme, SCHEME_HTTP);
+	}
+	/* add a user & password for anonymous FTP */
+	if(strcmp(ret->scheme,SCHEME_FTP) == 0 && strlen(ret->user) == 0) {
+		strcpy(ret->user, "anonymous");
+		strcpy(ret->pwd, "libalpm@guest");
+	}
 
-	snprintf(doc, doclen, "%s/%s", server->s_url->doc, filename);
-	ret = downloadMakeURL(server->s_url->scheme,
-												server->s_url->host,
-												server->s_url->port,
-												doc,
-												server->s_url->user,
-												server->s_url->pwd);
-	FREE(doc);
 	return(ret);
 }
 
@@ -150,7 +139,7 @@ int _alpm_downloadfiles_forreal(alpm_list_t *servers, const char *localpath,
 	}
 
 	for(i = servers; i && !done; i = i->next) {
-		pmserver_t *server = i->data;
+		const char *server = i->data;
 
 		/* get each file in the list */
 		for(lp = files; lp; lp = lp->next) {
@@ -393,43 +382,23 @@ int _alpm_downloadfiles_forreal(alpm_list_t *servers, const char *localpath,
  */
 char SYMEXPORT *alpm_fetch_pkgurl(const char *url)
 {
-	pmserver_t *server;
+	/* TODO this method will not work at all right now */
 	char *filename, *filepath;
 	const char *cachedir;
 
 	ALPM_LOG_FUNC;
 
-	if(strstr(url, "://") == NULL) {
-		_alpm_log(PM_LOG_DEBUG, "Invalid URL passed to alpm_fetch_pkgurl\n");
-		return(NULL);
-	}
-
-	server = _alpm_server_new(url);
-	if(!server) {
-		return(NULL);
-	}
-
-	/* strip path information from the filename */
-	filename = strip_filename(server);
-	if(!filename) {
-		_alpm_log(PM_LOG_ERROR, _("URL does not contain a file for download\n"));
-		return(NULL);
-	}
+	filename = NULL;
 
 	/* find a valid cache dir to download to */
 	cachedir = _alpm_filecache_setup();
 
-	/* TODO this seems like needless complexity just to download one file */
-	alpm_list_t *servers = alpm_list_add(NULL, server);
-
 	/* download the file */
-	if(_alpm_download_single_file(filename, servers, cachedir, 0, NULL)) {
+	if(_alpm_download_single_file(NULL, NULL, cachedir, 0, NULL)) {
 		_alpm_log(PM_LOG_WARNING, _("failed to download %s\n"), url);
 		return(NULL);
 	}
-	_alpm_log(PM_LOG_DEBUG, "successfully downloaded %s\n", filename);
-	alpm_list_free(servers);
-	_alpm_server_free(server);
+	_alpm_log(PM_LOG_DEBUG, "successfully downloaded %s\n", url);
 
 	/* we should be able to find the file the second time around */
 	filepath = _alpm_filecache_find(filename);

lib/libalpm/handle.c

@@ -39,7 +39,6 @@
 #include "error.h"
 #include "trans.h"
 #include "alpm.h"
-#include "server.h"
 
 /* global var for handle (private to libalpm) */
 pmhandle_t *handle = NULL;

lib/libalpm/po/POTFILES.in

@@ -10,6 +10,7 @@ lib/libalpm/conflict.c
 lib/libalpm/db.c
 lib/libalpm/delta.c
 lib/libalpm/deps.c
+lib/libalpm/dload.c
 lib/libalpm/error.c
 lib/libalpm/group.c
 lib/libalpm/handle.c
@@ -17,7 +18,6 @@ lib/libalpm/log.c
 lib/libalpm/md5.c
 lib/libalpm/package.c
 lib/libalpm/remove.c
-lib/libalpm/server.c
 lib/libalpm/sync.c
 lib/libalpm/trans.c
 lib/libalpm/util.c

lib/libalpm/server.c

@@ -1,89 +0,0 @@
-/*
- *  server.c
- *
- *  Copyright (c) 2006 by Miklos Vajna <vmiklos@frugalware.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, see <http://www.gnu.org/licenses/>.
- */
-
-#include "config.h"
-
-#include <stdlib.h>
-#include <errno.h>
-#include <time.h>
-#include <string.h>
-#include <limits.h>
-#include <stdio.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <download.h>
-
-/* libalpm */
-#include "server.h"
-#include "alpm_list.h"
-#include "error.h"
-#include "log.h"
-#include "alpm.h"
-#include "util.h"
-#include "handle.h"
-#include "package.h"
-
-pmserver_t *_alpm_server_new(const char *url)
-{
-	struct url *u;
-	pmserver_t *server;
-
-	ALPM_LOG_FUNC;
-
-	CALLOC(server, 1, sizeof(pmserver_t), RET_ERR(PM_ERR_MEMORY, NULL));
-
-	u = downloadParseURL(url);
-	if(!u) {
-		_alpm_log(PM_LOG_ERROR, _("url '%s' is invalid, ignoring\n"), url);
-		RET_ERR(PM_ERR_SERVER_BAD_URL, NULL);
-	}
-	if(strlen(u->scheme) == 0) {
-		_alpm_log(PM_LOG_WARNING, _("url scheme not specified, assuming http\n"));
-		strcpy(u->scheme, "http");
-	}
-
-	if(strcmp(u->scheme,"ftp") == 0 && strlen(u->user) == 0) {
-		strcpy(u->user, "anonymous");
-		strcpy(u->pwd, "libalpm@guest");
-	}
-
-	/* remove trailing slashes, just to clean up the rest of the code */
-	for(int i = strlen(u->doc) - 1; u->doc[i] == '/'; --i)
-		u->doc[i] = '\0';
-
-  server->s_url = u;
-
-	return server;
-}
-
-void _alpm_server_free(pmserver_t *server)
-{
-	ALPM_LOG_FUNC;
-
-	if(server == NULL) {
-		return;
-	}
-
-	/* free memory */
-	downloadFreeURL(server->s_url);
-	FREE(server);
-}
-
-/* vim: set ts=2 sw=2 noet: */

lib/libalpm/server.h

@@ -1,39 +0,0 @@
-/*
- *  server.h
- *
- *  Copyright (c) 2006 by Miklos Vajna <vmiklos@frugalware.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, see <http://www.gnu.org/licenses/>.
- */
-#ifndef _ALPM_SERVER_H
-#define _ALPM_SERVER_H
-
-#include "alpm_list.h"
-#include "alpm.h"
-
-#include <time.h>
-#include <download.h>
-
-/* Servers */
-struct __pmserver_t {
-	/* useless abstraction now? */
-	struct url *s_url;
-};
-
-pmserver_t *_alpm_server_new(const char *url);
-void _alpm_server_free(pmserver_t *server);
-
-#endif /* _ALPM_SERVER_H */
-
-/* vim: set ts=2 sw=2 noet: */

lib/libalpm/sync.c

@@ -44,7 +44,6 @@
 #include "util.h"
 #include "handle.h"
 #include "alpm.h"
-#include "server.h"
 #include "dload.h"
 #include "delta.h"