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pacman/lib/libalpm/alpm.c
Dan McGee bbe55b5ce9 Doxygen fixups for libalpm 
We haven't done a whole lot with Doxygen so far, so this updates some of the
things that have changed a lot- namely, the now public exposure of alpm_list.
All functions in this file have now been Doxygen commented, and a few other
things in alpm.c were fixed as well. In addition, the Doxygen config file
was updated.

Signed-off-by: Dan McGee <dan@archlinux.org>
2007-03-29 00:40:49 -04:00

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/*
* alpm.c
*
* Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org>
* Copyright (c) 2005 by Aurelien Foret <orelien@chez.com>
* Copyright (c) 2005 by Christian Hamar <krics@linuxforum.hu>
* Copyright (c) 2005, 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include <ctype.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <time.h>
#include <syslog.h>
#include <limits.h> /* PATH_MAX */
#include <stdarg.h>
#include <libintl.h>
/* libalpm */
#include "alpm.h"
#include "alpm_list.h"
#include "log.h"
#include "error.h"
#include "versioncmp.h"
#include "md5.h"
#include "sha1.h"
#include "package.h"
#include "group.h"
#include "util.h"
#include "db.h"
#include "cache.h"
#include "deps.h"
#include "conflict.h"
#include "backup.h"
#include "add.h"
#include "remove.h"
#include "sync.h"
#include "handle.h"
#include "provide.h"
#include "server.h"
#define min(X, Y) ((X) < (Y) ? (X) : (Y))
/* Globals */
pmhandle_t *handle = NULL;
enum _pmerrno_t pm_errno SYMEXPORT;
/** \addtogroup alpm_interface Interface Functions
* @brief Functions to initialize and release libalpm
* @{
*/
/** Initializes the library. This must be called before any other
* functions are called.
* @return 0 on success, -1 on error (pm_errno is set accordingly)
*/
int SYMEXPORT alpm_initialize()
{
ASSERT(handle == NULL, RET_ERR(PM_ERR_HANDLE_NOT_NULL, -1));
handle = _alpm_handle_new();
if(handle == NULL) {
RET_ERR(PM_ERR_MEMORY, -1);
}
return(0);
}
/** Release the library. This should be the last alpm call you make.
* @return 0 on success, -1 on error (pm_errno is set accordingly)
*/
int SYMEXPORT alpm_release()
{
int dbs_left = 0;
ALPM_LOG_FUNC;
ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
/* free the transaction if there is any */
if(handle->trans) {
alpm_trans_release();
}
/* close local database */
if(handle->db_local) {
alpm_db_unregister(handle->db_local);
handle->db_local = NULL;
}
/* and also sync ones */
while((dbs_left = alpm_list_count(handle->dbs_sync)) > 0) {
pmdb_t *db = (pmdb_t *)handle->dbs_sync->data;
_alpm_log(PM_LOG_DEBUG, _("removing DB %s, %d remaining..."), db->treename, dbs_left);
alpm_db_unregister(db);
db = NULL;
}
FREEHANDLE(handle);
return(0);
}
/** @} */
/** \addtogroup alpm_databases Database Functions
* @brief Functions to query and manipulate the database of libalpm
* @{
*/
/** Register a package database
* @param treename the name of the repository
* @return a pmdb_t* on success (the value), NULL on error
*/
pmdb_t SYMEXPORT *alpm_db_register(char *treename)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, NULL));
ASSERT(treename != NULL && strlen(treename) != 0, RET_ERR(PM_ERR_WRONG_ARGS, NULL));
/* Do not register a database if a transaction is on-going */
ASSERT(handle->trans == NULL, RET_ERR(PM_ERR_TRANS_NOT_NULL, NULL));
return(_alpm_db_register(treename, NULL));
}
/** Unregister a package database
* @param db pointer to the package database to unregister
* @return 0 on success, -1 on error (pm_errno is set accordingly)
*/
int alpm_db_unregister(pmdb_t *db)
{
int found = 0;
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
ASSERT(db != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));
/* Do not unregister a database if a transaction is on-going */
ASSERT(handle->trans == NULL, RET_ERR(PM_ERR_TRANS_NOT_NULL, -1));
if(db == handle->db_local) {
handle->db_local = NULL;
found = 1;
} else {
void *data;
handle->dbs_sync = alpm_list_remove(handle->dbs_sync, db, _alpm_db_cmp, &data);
if(data) {
found = 1;
}
}
if(!found) {
RET_ERR(PM_ERR_DB_NOT_FOUND, -1);
}
_alpm_log(PM_LOG_DEBUG, _("unregistering database '%s'"), db->treename);
/* Cleanup */
_alpm_db_free_pkgcache(db);
_alpm_log(PM_LOG_DEBUG, _("closing database '%s'"), db->treename);
_alpm_db_close(db);
_alpm_db_free(db);
return(0);
}
/** Set the serverlist of a database.
* @param db database pointer
* @param url url of the server
* @return 0 on success, -1 on error (pm_errno is set accordingly)
*/
int alpm_db_setserver(pmdb_t *db, const char *url)
{
int found = 0;
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(db != NULL, RET_ERR(PM_ERR_DB_NULL, -1));
if(strcmp(db->treename, "local") == 0) {
if(handle->db_local != NULL) {
found = 1;
}
} else {
alpm_list_t *i;
for(i = handle->dbs_sync; i && !found; i = i->next) {
pmdb_t *sdb = i->data;
if(strcmp(db->treename, sdb->treename) == 0) {
found = 1;
}
}
}
if(!found) {
RET_ERR(PM_ERR_DB_NOT_FOUND, -1);
}
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'"),
db->treename, server->s_url->scheme, server->s_url->host, server->s_url->doc);
} else {
FREELIST(db->servers);
_alpm_log(PM_LOG_DEBUG, _("serverlist flushed for '%s'"), db->treename);
}
return(0);
}
/** Update a package database
* @param force if true, then forces the update, otherwise update only in case
* the database isn't up to date
* @param db pointer to the package database to update
* @return 0 on success, > 0 on error (pm_errno is set accordingly), < 0 if up
* to date
*/
int SYMEXPORT alpm_db_update(int force, pmdb_t *db)
{
alpm_list_t *lp;
char path[PATH_MAX];
alpm_list_t *files = NULL;
char newmtime[16] = "";
char lastupdate[16] = "";
int ret;
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
ASSERT(db != NULL && db != handle->db_local, RET_ERR(PM_ERR_WRONG_ARGS, -1));
/* Verify we are in a transaction. This is done _mainly_ because we need a DB
* lock - if we update without a db lock, we may kludge some other pacman
* process that _has_ a lock.
*/
ASSERT(handle->trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
ASSERT(handle->trans->state == STATE_INITIALIZED, RET_ERR(PM_ERR_TRANS_NOT_INITIALIZED, -1));
ASSERT(handle->trans->type == PM_TRANS_TYPE_SYNC, RET_ERR(PM_ERR_TRANS_TYPE, -1));
if(!alpm_list_find(handle->dbs_sync, db)) {
RET_ERR(PM_ERR_DB_NOT_FOUND, -1);
}
if(!force) {
/* get the lastupdate time */
_alpm_db_getlastupdate(db, lastupdate);
if(strlen(lastupdate) == 0) {
_alpm_log(PM_LOG_DEBUG, _("failed to get lastupdate time for %s (no big deal)"), db->treename);
}
}
/* build a one-element list */
snprintf(path, PATH_MAX, "%s" PM_EXT_DB, db->treename);
files = alpm_list_add(files, strdup(path));
snprintf(path, PATH_MAX, "%s%s", handle->root, handle->dbpath);
ret = _alpm_downloadfiles_forreal(db->servers, path, files, lastupdate, newmtime);
FREELIST(files);
if(ret == 1) {
/* mtimes match, do nothing */
pm_errno = 0;
return(1);
} else if(ret == -1) {
/* we use downloadLastErrString and downloadLastErrCode here, error returns from
* libdownload */
_alpm_log(PM_LOG_DEBUG, _("failed to sync db: %s [%d]"), downloadLastErrString, downloadLastErrCode);
RET_ERR(PM_ERR_DB_SYNC, -1);
} else {
if(strlen(newmtime)) {
_alpm_log(PM_LOG_DEBUG, _("sync: new mtime for %s: %s"), db->treename, newmtime);
_alpm_db_setlastupdate(db, newmtime);
}
snprintf(path, PATH_MAX, "%s%s%s" PM_EXT_DB, handle->root, handle->dbpath, db->treename);
/* remove the old dir */
_alpm_log(PM_LOG_DEBUG, _("flushing database %s%s"), db->path);
for(lp = _alpm_db_get_pkgcache(db); lp; lp = lp->next) {
pmpkg_t *pkg = lp->data;
if(pkg && _alpm_db_remove(db, pkg) == -1) {
_alpm_log(PM_LOG_ERROR, _("could not remove database entry %s%s"), db->treename,
alpm_pkg_get_name(pkg));
RET_ERR(PM_ERR_DB_REMOVE, -1);
}
}
/* Cache needs to be rebuild */
_alpm_db_free_pkgcache(db);
/* uncompress the sync database */
if(_alpm_db_install(db, path) == -1) {
return -1;
}
}
return(0);
}
/** Get a package entry from a package database
* @param db pointer to the package database to get the package from
* @param name of the package
* @return the package entry on success, NULL on error
*/
pmpkg_t SYMEXPORT *alpm_db_get_pkg(pmdb_t *db, const char *name)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(db != NULL, return(NULL));
ASSERT(name != NULL && strlen(name) != 0, return(NULL));
return(_alpm_db_get_pkgfromcache(db, name));
}
/** Get the package cache of a package database
* @param db pointer to the package database to get the package from
* @return the list of packages on success, NULL on error
*/
alpm_list_t SYMEXPORT *alpm_db_getpkgcache(pmdb_t *db)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(db != NULL, return(NULL));
return(_alpm_db_get_pkgcache(db));
}
/** Get the list of packages that a package provides
* @param db pointer to the package database to get the package from
* @param name name of the package
* @return the list of packages on success, NULL on error
*/
alpm_list_t SYMEXPORT *alpm_db_whatprovides(pmdb_t *db, const char *name)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(db != NULL, return(NULL));
ASSERT(name != NULL && strlen(name) != 0, return(NULL));
return(_alpm_db_whatprovides(db, name));
}
/** Get a group entry from a package database
* @param db pointer to the package database to get the group from
* @param name of the group
* @return the groups entry on success, NULL on error
*/
pmgrp_t SYMEXPORT *alpm_db_readgrp(pmdb_t *db, const char *name)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(db != NULL, return(NULL));
ASSERT(name != NULL && strlen(name) != 0, return(NULL));
return(_alpm_db_get_grpfromcache(db, name));
}
/** Get the group cache of a package database
* @param db pointer to the package database to get the group from
* @return the list of groups on success, NULL on error
*/
alpm_list_t SYMEXPORT *alpm_db_getgrpcache(pmdb_t *db)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(db != NULL, return(NULL));
return(_alpm_db_get_grpcache(db));
}
/** @} */
/** \addtogroup alpm_packages Package Functions
* @brief Functions to manipulate libalpm packages
* @{
*/
/** Create a package from a file.
* @param filename location of the package tarball
* @param pkg address of the package pointer
* @return 0 on success, -1 on error (pm_errno is set accordingly)
*/
int SYMEXPORT alpm_pkg_load(char *filename, pmpkg_t **pkg)
{
_alpm_log(PM_LOG_FUNCTION, "enter alpm_pkg_load");
/* Sanity checks */
ASSERT(filename != NULL && strlen(filename) != 0, RET_ERR(PM_ERR_WRONG_ARGS, -1));
ASSERT(pkg != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));
*pkg = _alpm_pkg_load(filename);
if(*pkg == NULL) {
/* pm_errno is set by pkg_load */
return(-1);
}
return(0);
}
/** Free a package.
* @param pkg package pointer to free
* @return 0 on success, -1 on error (pm_errno is set accordingly)
*/
int SYMEXPORT alpm_pkg_free(pmpkg_t *pkg)
{
_alpm_log(PM_LOG_FUNCTION, "enter alpm_pkg_free");
ASSERT(pkg != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));
/* Only free packages loaded in user space */
if(pkg->origin != PKG_FROM_CACHE) {
_alpm_pkg_free(pkg);
}
return(0);
}
/** Check the integrity (with sha1) of a package from the sync cache.
* @param pkg package pointer
* @return 0 on success, -1 on error (pm_errno is set accordingly)
*/
int alpm_pkg_checksha1sum(pmpkg_t *pkg)
{
char path[PATH_MAX];
char *sha1sum = NULL;
int retval = 0;
ALPM_LOG_FUNC;
ASSERT(pkg != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));
/* We only inspect packages from sync repositories */
ASSERT(pkg->origin == PKG_FROM_CACHE, RET_ERR(PM_ERR_PKG_INVALID, -1));
ASSERT(pkg->data != handle->db_local, RET_ERR(PM_ERR_PKG_INVALID, -1));
snprintf(path, PATH_MAX, "%s%s/%s-%s" PM_EXT_PKG,
handle->root, handle->cachedir,
alpm_pkg_get_name(pkg), alpm_pkg_get_version(pkg));
sha1sum = _alpm_SHAFile(path);
if(sha1sum == NULL) {
_alpm_log(PM_LOG_ERROR, _("could not get sha1sum for package %s-%s"),
alpm_pkg_get_name(pkg), alpm_pkg_get_version(pkg));
pm_errno = PM_ERR_NOT_A_FILE;
retval = -1;
} else {
if(strcmp(sha1sum, alpm_pkg_get_sha1sum(pkg)) == 0) {
_alpm_log(PM_LOG_DEBUG, _("sha1sums for package %s-%s match"),
alpm_pkg_get_name(pkg), alpm_pkg_get_version(pkg));
} else {
_alpm_log(PM_LOG_ERROR, _("sha1sums do not match for package %s-%s"),
alpm_pkg_get_name(pkg), alpm_pkg_get_version(pkg));
pm_errno = PM_ERR_PKG_INVALID;
retval = -1;
}
}
FREE(sha1sum);
return(retval);
}
/** Check the integrity (with md5) of a package from the sync cache.
* @param pkg package pointer
* @return 0 on success, -1 on error (pm_errno is set accordingly)
*/
int alpm_pkg_checkmd5sum(pmpkg_t *pkg)
{
char path[PATH_MAX];
char *md5sum = NULL;
int retval = 0;
ALPM_LOG_FUNC;
ASSERT(pkg != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));
/* We only inspect packages from sync repositories */
ASSERT(pkg->origin == PKG_FROM_CACHE, RET_ERR(PM_ERR_PKG_INVALID, -1));
ASSERT(pkg->data != handle->db_local, RET_ERR(PM_ERR_PKG_INVALID, -1));
snprintf(path, PATH_MAX, "%s%s/%s-%s" PM_EXT_PKG,
handle->root, handle->cachedir,
alpm_pkg_get_name(pkg), alpm_pkg_get_version(pkg));
md5sum = _alpm_MDFile(path);
if(md5sum == NULL) {
_alpm_log(PM_LOG_ERROR, _("could not get md5sum for package %s-%s"),
alpm_pkg_get_name(pkg), alpm_pkg_get_version(pkg));
pm_errno = PM_ERR_NOT_A_FILE;
retval = -1;
} else {
if(strcmp(md5sum, alpm_pkg_get_md5sum(pkg)) == 0) {
_alpm_log(PM_LOG_DEBUG, _("md5sums for package %s-%s match"),
alpm_pkg_get_name(pkg), alpm_pkg_get_version(pkg));
} else {
_alpm_log(PM_LOG_ERROR, _("md5sums do not match for package %s-%s"),
alpm_pkg_get_name(pkg), alpm_pkg_get_version(pkg));
pm_errno = PM_ERR_PKG_INVALID;
retval = -1;
}
}
FREE(md5sum);
return(retval);
}
/** Compare versions.
* @param ver1 first version
* @param ver2 secont version
* @return postive, 0 or negative if ver1 is less, equal or more
* than ver2, respectively.
*/
int SYMEXPORT alpm_pkg_vercmp(const char *ver1, const char *ver2)
{
ALPM_LOG_FUNC;
return(_alpm_versioncmp(ver1, ver2));
}
/* internal */
static char *_supported_archs[] = {
"i586",
"i686",
"ppc",
"x86_64",
};
/**
* @brief Determine if a package name has -ARCH tacked on.
*
* @param pkgname name of the package to parse
*
* @return pointer to start of -ARCH text if it exists, else NULL
*/
char SYMEXPORT *alpm_pkg_name_hasarch(char *pkgname)
{
/* TODO remove this when we transfer everything over to -ARCH
*
* this parsing sucks... it's done to support
* two package formats for the time being:
* package-name-foo-1.0.0-1-i686
* and
* package-name-bar-1.2.3-1
*/
size_t i = 0;
char *arch, *cmp, *p;
ALPM_LOG_FUNC;
if((p = strrchr(pkgname, '-'))) {
for(i=0; i < sizeof(_supported_archs)/sizeof(char*); ++i) {
cmp = p+1;
arch = _supported_archs[i];
/* whee, case insensitive compare */
while(*arch && *cmp && tolower(*arch++) == tolower(*cmp++)) ;
if(*arch || *cmp) {
continue;
}
return(p);
}
}
return(NULL);
}
/** @} */
/** \addtogroup alpm_sync Sync Functions
* @brief Functions to get informations about libalpm syncs
* @{
*/
/** Searches a database
* @param db pointer to the package database to search in
* @param needles the list of strings to search for
* @return the list of packages on success, NULL on error
*/
alpm_list_t SYMEXPORT *alpm_db_search(pmdb_t *db, alpm_list_t* needles)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(db != NULL, return(NULL));
return(_alpm_db_search(db, needles));
}
/** @} */
/** \addtogroup alpm_trans Transaction Functions
* @brief Functions to manipulate libalpm transactions
* @{
*/
/** Initialize the transaction.
* @param type type of the transaction
* @param flags flags of the transaction (like nodeps, etc)
* @param event event callback function pointer
* @param conv question callback function pointer
* @param progress progress callback function pointer
* @return 0 on success, -1 on error (pm_errno is set accordingly)
*/
int SYMEXPORT alpm_trans_init(pmtranstype_t type, pmtransflag_t flags,
alpm_trans_cb_event event, alpm_trans_cb_conv conv,
alpm_trans_cb_progress progress)
{
char path[PATH_MAX];
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
ASSERT(handle->trans == NULL, RET_ERR(PM_ERR_TRANS_NOT_NULL, -1));
/* lock db */
snprintf(path, PATH_MAX, "%s%s", handle->root, PM_LOCK);
handle->lckfd = _alpm_lckmk(path);
if(handle->lckfd == -1) {
RET_ERR(PM_ERR_HANDLE_LOCK, -1);
}
handle->trans = _alpm_trans_new();
if(handle->trans == NULL) {
RET_ERR(PM_ERR_MEMORY, -1);
}
return(_alpm_trans_init(handle->trans, type, flags, event, conv, progress));
}
/** Search for packages to upgrade and add them to the transaction.
* @return 0 on success, -1 on error (pm_errno is set accordingly)
*/
int SYMEXPORT alpm_trans_sysupgrade()
{
pmtrans_t *trans;
ALPM_LOG_FUNC;
ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
trans = handle->trans;
ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
ASSERT(trans->state == STATE_INITIALIZED, RET_ERR(PM_ERR_TRANS_NOT_INITIALIZED, -1));
ASSERT(trans->type == PM_TRANS_TYPE_SYNC, RET_ERR(PM_ERR_TRANS_TYPE, -1));
return(_alpm_trans_sysupgrade(trans));
}
/** Add a target to the transaction.
* @param target the name of the target to add
* @return 0 on success, -1 on error (pm_errno is set accordingly)
*/
int SYMEXPORT alpm_trans_addtarget(char *target)
{
pmtrans_t *trans;
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
ASSERT(target != NULL && strlen(target) != 0, RET_ERR(PM_ERR_WRONG_ARGS, -1));
trans = handle->trans;
ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
ASSERT(trans->state == STATE_INITIALIZED, RET_ERR(PM_ERR_TRANS_NOT_INITIALIZED, -1));
return(_alpm_trans_addtarget(trans, target));
}
/** Prepare a transaction.
* @param data the address of a PM_LIST where detailed description
* of an error can be dumped (ie. list of conflicting files)
* @return 0 on success, -1 on error (pm_errno is set accordingly)
*/
int SYMEXPORT alpm_trans_prepare(alpm_list_t **data)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
ASSERT(data != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));
ASSERT(handle->trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
ASSERT(handle->trans->state == STATE_INITIALIZED, RET_ERR(PM_ERR_TRANS_NOT_INITIALIZED, -1));
return(_alpm_trans_prepare(handle->trans, data));
}
/** Commit a transaction.
* @param data the address of a PM_LIST where detailed description
* of an error can be dumped (ie. list of conflicting files)
* @return 0 on success, -1 on error (pm_errno is set accordingly)
*/
int SYMEXPORT alpm_trans_commit(alpm_list_t **data)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
ASSERT(handle->trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
ASSERT(handle->trans->state == STATE_PREPARED, RET_ERR(PM_ERR_TRANS_NOT_PREPARED, -1));
/* Check for database R/W permission */
if(!(handle->trans->flags & PM_TRANS_FLAG_PRINTURIS)) {
/* The print-uris operation is a bit odd. So we explicitly check for it */
ASSERT(handle->access == PM_ACCESS_RW, RET_ERR(PM_ERR_BADPERMS, -1));
}
return(_alpm_trans_commit(handle->trans, data));
}
/** Release a transaction.
* @return 0 on success, -1 on error (pm_errno is set accordingly)
*/
int SYMEXPORT alpm_trans_release()
{
pmtrans_t *trans;
char path[PATH_MAX];
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
trans = handle->trans;
ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
ASSERT(trans->state != STATE_IDLE, RET_ERR(PM_ERR_TRANS_NULL, -1));
/* during a commit do not interrupt inmediatelly, just after a target */
if(trans->state == STATE_COMMITING || trans->state == STATE_INTERRUPTED) {
if(trans->state == STATE_COMMITING) {
trans->state = STATE_INTERRUPTED;
}
pm_errno = PM_ERR_TRANS_COMMITING;
return(-1);
}
FREETRANS(handle->trans);
/* unlock db */
if(handle->lckfd != -1) {
close(handle->lckfd);
handle->lckfd = -1;
}
snprintf(path, PATH_MAX, "%s%s", handle->root, PM_LOCK);
if(_alpm_lckrm(path)) {
_alpm_log(PM_LOG_WARNING, _("could not remove lock file %s"), path);
alpm_logaction(_("warning: could not remove lock file %s"), path);
}
return(0);
}
/** @} */
/** \addtogroup alpm_log Logging Functions
* @brief Functions to log using libalpm
* @{
*/
/** A printf-like function for logging.
* @param fmt output format
* @return 0 on success, -1 on error (pm_errno is set accordingly)
*/
int SYMEXPORT alpm_logaction(char *fmt, ...)
{
char str[LOG_STR_LEN];
va_list args;
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
va_start(args, fmt);
vsnprintf(str, LOG_STR_LEN, fmt, args);
va_end(args);
/* TODO We should add a prefix to log strings depending on who called us.
* If logaction was called by the frontend:
* USER: <the frontend log>
* and if called internally:
* ALPM: <the library log>
* Moreover, the frontend should be able to choose its prefix
* (USER by default?):
* pacman: "PACMAN"
* kpacman: "KPACMAN"
* This would allow us to share the log file between several frontends
* and know who does what */
return(_alpm_logaction(handle->usesyslog, handle->logfd, str));
}
/** @} */
/** \addtogroup alpm_misc Miscellaneous Functions
* @brief Various libalpm functions
* @{
*/
/** Get the md5 sum of file.
* @param name name of the file
* @return the checksum on success, NULL on error
*/
char SYMEXPORT *alpm_get_md5sum(char *name)
{
ALPM_LOG_FUNC;
ASSERT(name != NULL, return(NULL));
return(_alpm_MDFile(name));
}
/** Get the sha1 sum of file.
* @param name name of the file
* @return the checksum on success, NULL on error
*/
char SYMEXPORT *alpm_get_sha1sum(char *name)
{
ALPM_LOG_FUNC;
ASSERT(name != NULL, return(NULL));
return(_alpm_SHAFile(name));
}
/** Fetch a remote pkg.
* @param url
* @return the downloaded filename on success, NULL on error
*/
char SYMEXPORT *alpm_fetch_pkgurl(char *url)
{
ALPM_LOG_FUNC;
ASSERT(strstr(url, "://"), return(NULL));
return(_alpm_fetch_pkgurl(url));
}
/** Parses a configuration file.
* @param file path to the config file.
* @param callback a function to be called upon new database creation
* @param this_section the config current section being parsed
* @return 0 on success, -1 on error (pm_errno is set accordingly)
*/
int SYMEXPORT alpm_parse_config(char *file, alpm_cb_db_register callback, const char *this_section)
{
FILE *fp = NULL;
char line[PATH_MAX+1];
char *ptr = NULL;
char *key = NULL;
int linenum = 0;
char section[256] = "";
pmdb_t *db = NULL;
ALPM_LOG_FUNC;
fp = fopen(file, "r");
if(fp == NULL) {
return(0);
}
if(this_section != NULL && strlen(this_section) > 0) {
strncpy(section, this_section, min(255, strlen(this_section)));
if(!strcmp(section, "local")) {
RET_ERR(PM_ERR_CONF_LOCAL, -1);
}
if(strcmp(section, "options")) {
db = _alpm_db_register(section, callback);
}
}
while(fgets(line, PATH_MAX, fp)) {
linenum++;
_alpm_strtrim(line);
if(strlen(line) == 0 || line[0] == '#') {
continue;
}
if(line[0] == '[' && line[strlen(line)-1] == ']') {
/* new config section */
ptr = line;
ptr++;
strncpy(section, ptr, min(255, strlen(ptr)-1));
section[min(255, strlen(ptr)-1)] = '\0';
_alpm_log(PM_LOG_DEBUG, _("config: new section '%s'"), section);
if(!strlen(section)) {
RET_ERR(PM_ERR_CONF_BAD_SECTION, -1);
}
if(!strcmp(section, "local")) {
RET_ERR(PM_ERR_CONF_LOCAL, -1);
}
if(strcmp(section, "options")) {
db = _alpm_db_register(section, callback);
if(db == NULL) {
/* pm_errno is set by alpm_db_register */
return(-1);
}
}
} else {
/* directive */
ptr = line;
key = strsep(&ptr, "=");
if(key == NULL) {
RET_ERR(PM_ERR_CONF_BAD_SYNTAX, -1);
}
_alpm_strtrim(key);
key = _alpm_strtoupper(key);
if(!strlen(section) && strcmp(key, "INCLUDE")) {
RET_ERR(PM_ERR_CONF_DIRECTIVE_OUTSIDE_SECTION, -1);
}
if(ptr == NULL) {
if(!strcmp(key, "NOPASSIVEFTP")) {
alpm_option_set_nopassiveftp(1);
_alpm_log(PM_LOG_DEBUG, _("config: nopassiveftp"));
} else if(!strcmp(key, "USESYSLOG")) {
alpm_option_set_usesyslog(1);
_alpm_log(PM_LOG_DEBUG, _("config: usesyslog"));
} else if(!strcmp(key, "ILOVECANDY")) {
alpm_option_set_chomp(1);
_alpm_log(PM_LOG_DEBUG, _("config: chomp"));
} else if(!strcmp(key, "USECOLOR")) {
alpm_option_set_usecolor(1);
_alpm_log(PM_LOG_DEBUG, _("config: usecolor"));
} else {
RET_ERR(PM_ERR_CONF_BAD_SYNTAX, -1);
}
} else {
_alpm_strtrim(ptr);
if(!strcmp(key, "INCLUDE")) {
char conf[PATH_MAX];
strncpy(conf, ptr, PATH_MAX);
_alpm_log(PM_LOG_DEBUG, _("config: including %s"), conf);
alpm_parse_config(conf, callback, section);
} else if(!strcmp(section, "options")) {
if(!strcmp(key, "NOUPGRADE")) {
char *p = ptr;
char *q;
while((q = strchr(p, ' '))) {
*q = '\0';
alpm_option_add_noupgrade(p);
_alpm_log(PM_LOG_DEBUG, _("config: noupgrade: %s"), p);
p = q;
p++;
}
alpm_option_add_noupgrade(p);
_alpm_log(PM_LOG_DEBUG, _("config: noupgrade: %s"), p);
} else if(!strcmp(key, "NOEXTRACT")) {
char *p = ptr;
char *q;
while((q = strchr(p, ' '))) {
*q = '\0';
alpm_option_add_noextract(p);
_alpm_log(PM_LOG_DEBUG, _("config: noextract: %s"), p);
p = q;
p++;
}
alpm_option_add_noextract(p);
_alpm_log(PM_LOG_DEBUG, _("config: noextract: %s"), p);
} else if(!strcmp(key, "IGNOREPKG")) {
char *p = ptr;
char *q;
while((q = strchr(p, ' '))) {
*q = '\0';
alpm_option_add_ignorepkg(p);
_alpm_log(PM_LOG_DEBUG, _("config: ignorepkg: %s"), p);
p = q;
p++;
}
alpm_option_add_ignorepkg(p);
_alpm_log(PM_LOG_DEBUG, _("config: ignorepkg: %s"), p);
} else if(!strcmp(key, "HOLDPKG")) {
char *p = ptr;
char *q;
while((q = strchr(p, ' '))) {
*q = '\0';
alpm_option_add_holdpkg(p);
_alpm_log(PM_LOG_DEBUG, _("config: holdpkg: %s"), p);
p = q;
p++;
}
alpm_option_add_holdpkg(p);
_alpm_log(PM_LOG_DEBUG, _("config: holdpkg: %s"), p);
} else if(!strcmp(key, "DBPATH")) {
/* shave off the leading slash, if there is one */
if(*ptr == '/') {
ptr++;
}
alpm_option_set_dbpath(ptr);
_alpm_log(PM_LOG_DEBUG, _("config: dbpath: %s"), ptr);
} else if(!strcmp(key, "CACHEDIR")) {
/* shave off the leading slash, if there is one */
if(*ptr == '/') {
ptr++;
}
alpm_option_set_cachedir(ptr);
_alpm_log(PM_LOG_DEBUG, _("config: cachedir: %s"), ptr);
} else if (!strcmp(key, "LOGFILE")) {
alpm_option_set_logfile(ptr);
_alpm_log(PM_LOG_DEBUG, _("config: logfile: %s"), ptr);
} else if (!strcmp(key, "XFERCOMMAND")) {
alpm_option_set_xfercommand(ptr);
_alpm_log(PM_LOG_DEBUG, _("config: xfercommand: %s"), ptr);
} else if (!strcmp(key, "UPGRADEDELAY")) {
/* The config value is in days, we use seconds */
time_t ud = atol(ptr) * 60 * 60 *24;
alpm_option_set_upgradedelay(ud);
_alpm_log(PM_LOG_DEBUG, _("config: upgradedelay: %d"), ud);
} else {
RET_ERR(PM_ERR_CONF_BAD_SYNTAX, -1);
}
} else {
if(!strcmp(key, "SERVER")) {
/* add to the list */
if(alpm_db_setserver(db, ptr) != 0) {
/* pm_errno is set by alpm_db_setserver */
return(-1);
}
} else {
RET_ERR(PM_ERR_CONF_BAD_SYNTAX, -1);
}
}
line[0] = '\0';
}
}
}
fclose(fp);
return(0);
}
/** @} */
/* This function is mostly the same as sync.c find_replacements and sysupgrade
* functions, and we should be able to combine them - this is an interim
* solution made for -Qu operation */
alpm_list_t SYMEXPORT *alpm_get_upgrades()
{
alpm_list_t *syncpkgs = NULL;
alpm_list_t *i, *j, *k, *m;
ALPM_LOG_FUNC;
/* TODO holy nested loops, Batman! */
/* check for "recommended" package replacements */
_alpm_log(PM_LOG_DEBUG, _("checking for package replacements"));
for(i = handle->dbs_sync; i; i = i->next) {
for(j = _alpm_db_get_pkgcache(i->data); j; j = j->next) {
pmpkg_t *spkg = j->data;
for(k = alpm_pkg_get_replaces(spkg); k; k = k->next) {
for(m = _alpm_db_get_pkgcache(handle->db_local); m; m = m->next) {
pmpkg_t *lpkg = m->data;
if(strcmp(k->data, alpm_pkg_get_name(lpkg)) == 0) {
_alpm_log(PM_LOG_DEBUG, _("checking replacement '%s' for package '%s'"), k->data,
alpm_pkg_get_name(spkg));
if(alpm_list_find_str(handle->ignorepkg, alpm_pkg_get_name(lpkg))) {
_alpm_log(PM_LOG_WARNING, _("%s-%s: ignoring package upgrade (to be replaced by %s-%s)"),
alpm_pkg_get_name(lpkg), alpm_pkg_get_version(lpkg),
alpm_pkg_get_name(spkg), alpm_pkg_get_version(spkg));
} else {
/* assume all replaces=() packages are accepted */
pmsyncpkg_t *sync = NULL;
pmpkg_t *dummy = _alpm_pkg_new(alpm_pkg_get_name(lpkg), NULL);
if(dummy == NULL) {
pm_errno = PM_ERR_MEMORY;
goto error;
}
dummy->requiredby = alpm_list_strdup(alpm_pkg_get_requiredby(lpkg));
pmsyncpkg_t *syncpkg;
syncpkg = _alpm_sync_find(syncpkgs, alpm_pkg_get_name(spkg));
if(syncpkg) {
/* found it -- just append to the replaces list */
sync->data = alpm_list_add(sync->data, dummy);
} else {
/* none found -- enter pkg into the final sync list */
sync = _alpm_sync_new(PM_SYNC_TYPE_REPLACE, spkg, NULL);
if(sync == NULL) {
FREEPKG(dummy);
pm_errno = PM_ERR_MEMORY;
goto error;
}
sync->data = alpm_list_add(NULL, dummy);
syncpkgs = alpm_list_add(syncpkgs, sync);
}
_alpm_log(PM_LOG_DEBUG, _("%s-%s elected for upgrade (to be replaced by %s-%s)"),
alpm_pkg_get_name(lpkg), alpm_pkg_get_version(lpkg),
alpm_pkg_get_name(spkg), alpm_pkg_get_version(spkg));
}
break;
}
}
}
}
}
/* now do normal upgrades */
for(i = _alpm_db_get_pkgcache(handle->db_local); i; i = i->next) {
int replace=0;
pmpkg_t *local = i->data;
pmpkg_t *spkg = NULL;
pmsyncpkg_t *sync;
for(j = handle->dbs_sync; !spkg && j; j = j->next) {
spkg = _alpm_db_get_pkgfromcache(j->data, alpm_pkg_get_name(local));
}
if(spkg == NULL) {
_alpm_log(PM_LOG_DEBUG, _("'%s' not found in sync db -- skipping"), alpm_pkg_get_name(local));
continue;
}
/* we don't care about a to-be-replaced package's newer version */
for(j = syncpkgs; j && !replace; j=j->next) {
sync = j->data;
if(sync->type == PM_SYNC_TYPE_REPLACE) {
if(_alpm_pkg_find(alpm_pkg_get_name(spkg), sync->data)) {
replace=1;
}
}
}
if(replace) {
_alpm_log(PM_LOG_DEBUG, _("'%s' is already elected for removal -- skipping"),
alpm_pkg_get_name(local));
continue;
}
if(alpm_pkg_compare_versions(local, spkg)) {
_alpm_log(PM_LOG_DEBUG, _("%s elected for upgrade (%s => %s)"),
alpm_pkg_get_name(local), alpm_pkg_get_version(local),
alpm_pkg_get_version(spkg));
pmsyncpkg_t *syncpkg;
syncpkg = _alpm_sync_find(syncpkgs, alpm_pkg_get_name(local));
if(!syncpkg) {
pmpkg_t *dummy = _alpm_pkg_new(alpm_pkg_get_name(local),
alpm_pkg_get_version(local));
if(dummy == NULL) {
goto error;
}
sync = _alpm_sync_new(PM_SYNC_TYPE_UPGRADE, spkg, dummy);
if(sync == NULL) {
FREEPKG(dummy);
goto error;
}
syncpkgs = alpm_list_add(syncpkgs, sync);
}
}
}
return(syncpkgs);
error:
if(syncpkgs) {
alpm_list_free_inner(syncpkgs, _alpm_sync_free);
alpm_list_free(syncpkgs);
}
return(NULL);
}
/* vim: set ts=2 sw=2 noet: */
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