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pacman/lib/libalpm/alpm.c
Aaron Griffin 3bf918dc4e Fixed pacman -U: 
* Accidental database read of a file-based package (whoops)
    * Proper fetching of url-based -U or -A
Removed some newlines from _alpm_log calls, to make debug output more concise
2006-11-01 06:30:47 +00:00

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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 <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <fcntl.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>
/* pacman */
#include "log.h"
#include "error.h"
#include "versioncmp.h"
#include "md5.h"
#include "sha1.h"
#include "list.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"
#include "alpm.h"
#define min(X, Y) ((X) < (Y) ? (X) : (Y))
/* Globals */
pmhandle_t *handle = NULL;
enum __pmerrno_t pm_errno;
/** @defgroup alpm_interface Interface Functions
* @brief Function to initialize and release libalpm
* @{
*/
/** Initializes the library. This must be called before any other
* functions are called.
* @param root the full path of the root we'll be installing to (usually /)
* @return 0 on success, -1 on error (pm_errno is set accordingly)
*/
int alpm_initialize(char *root)
{
char str[PATH_MAX];
ASSERT(handle == NULL, RET_ERR(PM_ERR_HANDLE_NOT_NULL, -1));
handle = _alpm_handle_new();
if(handle == NULL) {
RET_ERR(PM_ERR_MEMORY, -1);
}
STRNCPY(str, (root) ? root : PM_ROOT, PATH_MAX);
/* add a trailing '/' if there isn't one */
if(str[strlen(str)-1] != '/') {
strcat(str, "/");
}
handle->root = strdup(str);
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 alpm_release()
{
pmlist_t *i;
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 */
for(i = handle->dbs_sync; i; i = i->next) {
alpm_db_unregister(i->data);
i->data = NULL;
}
FREEHANDLE(handle);
return(0);
}
/** @} */
/** @defgroup alpm_options Library Options
* @brief Functions to set and get libalpm options
* @{
*/
/** Set a library option.
* @param parm the name of the parameter
* @param data the value of the parameter
* @return 0 on success, -1 on error (pm_errno is set accordingly)
*/
int alpm_set_option(unsigned char parm, unsigned long data)
{
/* Sanity checks */
ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
return(_alpm_handle_set_option(handle, parm, data));
}
/** Get the value of a library option.
* @param parm the parameter to get
* @param data pointer argument to get the value in
* @return 0 on success, -1 on error (pm_errno is set accordingly)
*/
int alpm_get_option(unsigned char parm, long *data)
{
/* Sanity checks */
ASSERT(handle != NULL, RET_ERR(PM_ERR_HANDLE_NULL, -1));
ASSERT(data != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));
return(_alpm_handle_get_option(handle, parm, data));
}
/** @} */
/** @defgroup alpm_databases Database Functions
* @brief Frunctions to query and manipulate the database of libalpm
* @{
*/
/** Register a package database
* @param treename the name of the repository
* @return 0 on success, -1 on error (pm_errno is set accordingly)
*/
pmdb_t *alpm_db_register(char *treename)
{
/* 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;
/* 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_FLOW1, _("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);
}
/** Get informations about a database.
* @param db database pointer
* @param parm name of the info to get
* @return a void* on success (the value), NULL on error
*/
void *alpm_db_getinfo(PM_DB *db, unsigned char parm)
{
void *data = NULL;
char path[PATH_MAX];
pmserver_t *server;
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(db != NULL, return(NULL));
switch(parm) {
case PM_DB_TREENAME: data = db->treename; break;
case PM_DB_FIRSTSERVER:
server = (pmserver_t*)db->servers->data;
snprintf(path, PATH_MAX, "%s://%s%s", server->s_url->scheme,
server->s_url->host, server->s_url->doc);
data = strdup(path);
break;
default:
data = NULL;
}
return(data);
}
/** 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, char *url)
{
int found = 0;
/* 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 {
pmlist_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_FLOW2, _("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_FLOW2, _("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 alpm_db_update(int force, PM_DB *db)
{
pmlist_t *lp;
char path[PATH_MAX];
pmlist_t *files = NULL;
char newmtime[16] = "";
char lastupdate[16] = "";
int ret;
/* 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));
/* Do not update a database if a transaction is on-going */
ASSERT(handle->trans == NULL, RET_ERR(PM_ERR_TRANS_NOT_NULL, -1));
if(!_alpm_list_is_in(db, handle->dbs_sync)) {
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 fetchLastErrString and fetchLastErrCode here, error returns from
* libfetch */
_alpm_log(PM_LOG_DEBUG, _("failed to sync db: %s [%d]"), fetchLastErrString, fetchLastErrCode);
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_FLOW2, _("flushing database %s/%s"), handle->dbpath, db->treename);
for(lp = _alpm_db_get_pkgcache(db, INFRQ_NONE); lp; lp = lp->next) {
if(_alpm_db_remove(db, lp->data) == -1) {
if(lp->data) {
_alpm_log(PM_LOG_ERROR, _("could not remove database entry %s/%s"), db->treename,
((pmpkg_t *)lp->data)->name);
}
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 *alpm_db_readpkg(pmdb_t *db, char *name)
{
/* 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
*/
pmlist_t *alpm_db_getpkgcache(pmdb_t *db)
{
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(db != NULL, return(NULL));
return(_alpm_db_get_pkgcache(db, INFRQ_NONE));
}
/** 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
*/
pmlist_t *alpm_db_whatprovides(pmdb_t *db, char *name)
{
/* 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 *alpm_db_readgrp(pmdb_t *db, char *name)
{
/* 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
*/
pmlist_t *alpm_db_getgrpcache(pmdb_t *db)
{
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(db != NULL, return(NULL));
return(_alpm_db_get_grpcache(db));
}
/** @} */
/** @defgroup alpm_packages Package Functions
* @brief Functions to manipulate libalpm packages
* @{
*/
/** Get informations about a package.
* @param pkg package pointer
* @param parm name of the info to get
* @return a void* on success (the value), NULL on error
*/
void *alpm_pkg_getinfo(pmpkg_t *pkg, unsigned char parm)
{
void *data = NULL;
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(pkg != NULL, return(NULL));
/* Update the cache package entry if needed */
if(pkg->origin == PKG_FROM_CACHE) {
switch(parm) {
/* Desc entry */
/*case PM_PKG_NAME:
case PM_PKG_VERSION:*/
case PM_PKG_DESC:
case PM_PKG_GROUPS:
case PM_PKG_URL:
case PM_PKG_LICENSE:
case PM_PKG_ARCH:
case PM_PKG_BUILDDATE:
case PM_PKG_INSTALLDATE:
case PM_PKG_PACKAGER:
case PM_PKG_SIZE:
case PM_PKG_USIZE:
case PM_PKG_REASON:
case PM_PKG_MD5SUM:
case PM_PKG_SHA1SUM:
if(!(pkg->infolevel & INFRQ_DESC)) {
_alpm_log(PM_LOG_DEBUG, _("loading DESC info for '%s'"), pkg->name);
_alpm_db_read(pkg->data, INFRQ_DESC, pkg);
}
break;
/* Depends entry */
case PM_PKG_DEPENDS:
case PM_PKG_REQUIREDBY:
case PM_PKG_CONFLICTS:
case PM_PKG_PROVIDES:
case PM_PKG_REPLACES:
if(!(pkg->infolevel & INFRQ_DEPENDS)) {
_alpm_log(PM_LOG_DEBUG, "loading DEPENDS info for '%s'", pkg->name);
_alpm_db_read(pkg->data, INFRQ_DEPENDS, pkg);
}
break;
/* Files entry */
case PM_PKG_FILES:
case PM_PKG_BACKUP:
if(pkg->data == handle->db_local && !(pkg->infolevel & INFRQ_FILES)) {
_alpm_log(PM_LOG_DEBUG, _("loading FILES info for '%s'"), pkg->name);
_alpm_db_read(pkg->data, INFRQ_FILES, pkg);
}
break;
/* Scriptlet */
case PM_PKG_SCRIPLET:
if(pkg->data == handle->db_local && !(pkg->infolevel & INFRQ_SCRIPLET)) {
_alpm_log(PM_LOG_DEBUG, _("loading SCRIPLET info for '%s'"), pkg->name);
_alpm_db_read(pkg->data, INFRQ_SCRIPLET, pkg);
}
break;
}
}
switch(parm) {
case PM_PKG_NAME: data = pkg->name; break;
case PM_PKG_VERSION: data = pkg->version; break;
case PM_PKG_DESC: data = pkg->desc; break;
case PM_PKG_GROUPS: data = pkg->groups; break;
case PM_PKG_URL: data = pkg->url; break;
case PM_PKG_ARCH: data = pkg->arch; break;
case PM_PKG_BUILDDATE: data = pkg->builddate; break;
case PM_PKG_BUILDTYPE: data = pkg->buildtype; break;
case PM_PKG_INSTALLDATE: data = pkg->installdate; break;
case PM_PKG_PACKAGER: data = pkg->packager; break;
case PM_PKG_SIZE: data = (void *)(long)pkg->size; break;
case PM_PKG_USIZE: data = (void *)(long)pkg->usize; break;
case PM_PKG_REASON: data = (void *)(long)pkg->reason; break;
case PM_PKG_LICENSE: data = pkg->license; break;
case PM_PKG_REPLACES: data = pkg->replaces; break;
case PM_PKG_MD5SUM: data = pkg->md5sum; break;
case PM_PKG_SHA1SUM: data = pkg->sha1sum; break;
case PM_PKG_DEPENDS: data = pkg->depends; break;
case PM_PKG_REMOVES: data = pkg->removes; break;
case PM_PKG_REQUIREDBY: data = pkg->requiredby; break;
case PM_PKG_PROVIDES: data = pkg->provides; break;
case PM_PKG_CONFLICTS: data = pkg->conflicts; break;
case PM_PKG_FILES: data = pkg->files; break;
case PM_PKG_BACKUP: data = pkg->backup; break;
case PM_PKG_SCRIPLET: data = (void *)(long)pkg->scriptlet; break;
case PM_PKG_DATA: data = pkg->data; break;
default:
data = NULL;
break;
}
return(data);
}
/** 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 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 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;
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,
pkg->name, pkg->version);
sha1sum = _alpm_SHAFile(path);
if(sha1sum == NULL) {
_alpm_log(PM_LOG_ERROR, _("could not get sha1 checksum for package %s-%s"),
pkg->name, pkg->version);
pm_errno = PM_ERR_NOT_A_FILE;
retval = -1;
} else {
if(!(pkg->infolevel & INFRQ_DESC)) {
_alpm_log(PM_LOG_DEBUG, _("loading DESC info for '%s'"), pkg->name);
_alpm_db_read(pkg->data, INFRQ_DESC, pkg);
}
if(strcmp(sha1sum, pkg->sha1sum) == 0) {
_alpm_log(PM_LOG_FLOW1, _("checksums for package %s-%s are matching"),
pkg->name, pkg->version);
} else {
_alpm_log(PM_LOG_ERROR, _("sha1sums do not match for package %s-%s"),
pkg->name, pkg->version);
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;
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,
pkg->name, pkg->version);
md5sum = _alpm_MDFile(path);
if(md5sum == NULL) {
_alpm_log(PM_LOG_ERROR, _("could not get md5 checksum for package %s-%s"),
pkg->name, pkg->version);
pm_errno = PM_ERR_NOT_A_FILE;
retval = -1;
} else {
if(!(pkg->infolevel & INFRQ_DESC)) {
_alpm_log(PM_LOG_DEBUG, _("loading DESC info for '%s'"), pkg->name);
_alpm_db_read(pkg->data, INFRQ_DESC, pkg);
}
if(strcmp(md5sum, pkg->md5sum) == 0) {
_alpm_log(PM_LOG_FLOW1, _("checksums for package %s-%s are matching"),
pkg->name, pkg->version);
} else {
_alpm_log(PM_LOG_ERROR, _("md5sums do not match for package %s-%s"),
pkg->name, pkg->version);
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 alpm_pkg_vercmp(const char *ver1, const char *ver2)
{
return(_alpm_versioncmp(ver1, ver2));
}
/** @} */
/** @defgroup alpm_groups Group Functions
* @brief Functions to get informations about libalpm groups
* @{
*/
/** Get informations about a group.
* @param grp group pointer
* @param parm name of the info to get
* @return a void* on success (the value), NULL on error
*/
void *alpm_grp_getinfo(pmgrp_t *grp, unsigned char parm)
{
void *data = NULL;
/* Sanity checks */
ASSERT(grp != NULL, return(NULL));
switch(parm) {
case PM_GRP_NAME: data = grp->name; break;
case PM_GRP_PKGNAMES: data = grp->packages; break;
default:
data = NULL;
break;
}
return(data);
}
/** @} */
/** @defgroup alpm_sync Sync Functions
* @brief Functions to get informations about libalpm syncs
* @{
*/
/** Get informations about a sync.
* @param sync pointer
* @param parm name of the info to get
* @return a void* on success (the value), NULL on error
*/
void *alpm_sync_getinfo(pmsyncpkg_t *sync, unsigned char parm)
{
void *data;
/* Sanity checks */
ASSERT(sync != NULL, return(NULL));
switch(parm) {
case PM_SYNC_TYPE: data = (void *)(long)sync->type; break;
case PM_SYNC_PKG: data = sync->pkg; break;
case PM_SYNC_DATA: data = sync->data; break;
default:
data = NULL;
break;
}
return(data);
}
/** Searches a database
* @param db pointer to the package database to search in
* @return the list of packages on success, NULL on error
*/
pmlist_t *alpm_db_search(pmdb_t *db)
{
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(handle->needles != NULL, return(NULL));
ASSERT(handle->needles->data != NULL, return(NULL));
ASSERT(db != NULL, return(NULL));
return(_alpm_db_search(db, handle->needles));
}
/** @} */
/** @defgroup alpm_trans Transaction Functions
* @brief Functions to manipulate libalpm transactions
* @{
*/
/** Get informations about the transaction.
* @param parm name of the info to get
* @return a void* on success (the value), NULL on error
*/
void *alpm_trans_getinfo(unsigned char parm)
{
pmtrans_t *trans;
void *data;
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(handle->trans != NULL, return(NULL));
trans = handle->trans;
switch(parm) {
case PM_TRANS_TYPE: data = (void *)(long)trans->type; break;
case PM_TRANS_FLAGS: data = (void *)(long)trans->flags; break;
case PM_TRANS_TARGETS: data = trans->targets; break;
case PM_TRANS_PACKAGES: data = trans->packages; break;
default:
data = NULL;
break;
}
return(data);
}
/** 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 alpm_trans_init(unsigned char type, unsigned int flags, alpm_trans_cb_event event, alpm_trans_cb_conv conv, alpm_trans_cb_progress progress)
{
char path[PATH_MAX];
/* 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 alpm_trans_sysupgrade()
{
pmtrans_t *trans;
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 alpm_trans_addtarget(char *target)
{
pmtrans_t *trans;
/* 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 alpm_trans_prepare(pmlist_t **data)
{
/* 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 alpm_trans_commit(pmlist_t **data)
{
/* 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 */
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 alpm_trans_release()
{
pmtrans_t *trans;
char path[PATH_MAX];
/* 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);
}
/** @} */
/** @defgroup alpm_dep Dependency Functions
* @brief Functions to get informations about a libalpm dependency
* @{
*/
/** Get informations about a dependency.
* @param miss dependency pointer
* @param parm name of the info to get
* @return a void* on success (the value), NULL on error
*/
void *alpm_dep_getinfo(pmdepmissing_t *miss, unsigned char parm)
{
void *data;
/* Sanity checks */
ASSERT(miss != NULL, return(NULL));
switch(parm) {
case PM_DEP_TARGET: data = (void *)(long)miss->target; break;
case PM_DEP_TYPE: data = (void *)(long)miss->type; break;
case PM_DEP_MOD: data = (void *)(long)miss->depend.mod; break;
case PM_DEP_NAME: data = miss->depend.name; break;
case PM_DEP_VERSION: data = miss->depend.version; break;
default:
data = NULL;
break;
}
return(data);
}
/** @} */
/** @defgroup alpm_conflict File Conflicts Functions
* @brief Functions to get informations about a libalpm file conflict
* @{
*/
/** Get informations about a file conflict.
* @param conflict database conflict structure
* @param parm name of the info to get
* @return a void* on success (the value), NULL on error
*/
void *alpm_conflict_getinfo(pmconflict_t *conflict, unsigned char parm)
{
void *data;
/* Sanity checks */
ASSERT(conflict != NULL, return(NULL));
switch(parm) {
case PM_CONFLICT_TARGET: data = conflict->target; break;
case PM_CONFLICT_TYPE: data = (void *)(long)conflict->type; break;
case PM_CONFLICT_FILE: data = conflict->file; break;
case PM_CONFLICT_CTARGET: data = conflict->ctarget; break;
default:
data = NULL;
break;
}
return(data);
}
/** @} */
/** @defgroup 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 alpm_logaction(char *fmt, ...)
{
char str[LOG_STR_LEN];
va_list args;
/* 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);
/* ORE
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"
...
It allows to share the log file between several frontends and to actually
know who does what */
return(_alpm_logaction(handle->usesyslog, handle->logfd, str));
}
/** @} */
/** @defgroup alpm_list List Functions
* @brief Functions to manipulate libalpm linked lists
* @{
*/
/** Get the first element of a list.
* @param list the list
* @return the first element
*/
pmlist_t *alpm_list_first(pmlist_t *list)
{
return(list);
}
/** Get the next element of a list.
* @param entry the list entry
* @return the next element on success, NULL on error
*/
pmlist_t *alpm_list_next(pmlist_t *entry)
{
ASSERT(entry != NULL, return(NULL));
return(entry->next);
}
/** Get the data of a list entry.
* @param entry the list entry
* @return the data on success, NULL on error
*/
void *alpm_list_getdata(pmlist_t *entry)
{
ASSERT(entry != NULL, return(NULL));
return(entry->data);
}
/** Free a list.
* @param entry list to free
* @return 0 on success, -1 on error
*/
int alpm_list_free(pmlist_t *entry)
{
ASSERT(entry != NULL, return(-1));
FREELIST(entry);
return(0);
}
/** Count the entries in a list.
* @param list the list to count
* @return number of entries on success, NULL on error
*/
int alpm_list_count(pmlist_t *list)
{
ASSERT(list != NULL, return(-1));
return(_alpm_list_count(list));
}
/** @} */
/** @defgroup 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 *alpm_get_md5sum(char *name)
{
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 *alpm_get_sha1sum(char *name)
{
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 *alpm_fetch_pkgurl(char *url)
{
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 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] = "";
PM_DB *db = NULL;
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_set_option(PM_OPT_NOPASSIVEFTP, (long)1);
} else if(!strcmp(key, "USESYSLOG")) {
alpm_set_option(PM_OPT_USESYSLOG, (long)1);
_alpm_log(PM_LOG_DEBUG, _("config: usesyslog"));
} else if(!strcmp(key, "ILOVECANDY")) {
alpm_set_option(PM_OPT_CHOMP, (long)1);
} 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';
if(alpm_set_option(PM_OPT_NOUPGRADE, (long)p) == -1) {
/* pm_errno is set by alpm_set_option */
return(-1);
}
_alpm_log(PM_LOG_DEBUG, _("config: noupgrade: %s"), p);
p = q;
p++;
}
if(alpm_set_option(PM_OPT_NOUPGRADE, (long)p) == -1) {
/* pm_errno is set by alpm_set_option */
return(-1);
}
_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';
if(alpm_set_option(PM_OPT_NOEXTRACT, (long)p) == -1) {
/* pm_errno is set by alpm_set_option */
return(-1);
}
_alpm_log(PM_LOG_DEBUG, _("config: noextract: %s"), p);
p = q;
p++;
}
if(alpm_set_option(PM_OPT_NOEXTRACT, (long)p) == -1) {
/* pm_errno is set by alpm_set_option */
return(-1);
}
_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';
if(alpm_set_option(PM_OPT_IGNOREPKG, (long)p) == -1) {
/* pm_errno is set by alpm_set_option */
return(-1);
}
_alpm_log(PM_LOG_DEBUG, _("config: ignorepkg: %s"), p);
p = q;
p++;
}
if(alpm_set_option(PM_OPT_IGNOREPKG, (long)p) == -1) {
/* pm_errno is set by alpm_set_option */
return(-1);
}
_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';
if(alpm_set_option(PM_OPT_HOLDPKG, (long)p) == -1) {
/* pm_errno is set by alpm_set_option */
return(-1);
}
_alpm_log(PM_LOG_DEBUG, _("config: holdpkg: %s"), p);
p = q;
p++;
}
if(alpm_set_option(PM_OPT_HOLDPKG, (long)p) == -1) {
/* pm_errno is set by alpm_set_option */
return(-1);
}
_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++;
}
if(alpm_set_option(PM_OPT_DBPATH, (long)ptr) == -1) {
/* pm_errno is set by alpm_set_option */
return(-1);
}
_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++;
}
if(alpm_set_option(PM_OPT_CACHEDIR, (long)ptr) == -1) {
/* pm_errno is set by alpm_set_option */
return(-1);
}
_alpm_log(PM_LOG_DEBUG, _("config: cachedir: %s"), ptr);
} else if (!strcmp(key, "LOGFILE")) {
if(alpm_set_option(PM_OPT_LOGFILE, (long)ptr) == -1) {
/* pm_errno is set by alpm_set_option */
return(-1);
}
_alpm_log(PM_LOG_DEBUG, _("config: log file: %s"), ptr);
} else if (!strcmp(key, "XFERCOMMAND")) {
if(alpm_set_option(PM_OPT_XFERCOMMAND, (long)ptr) == -1) {
/* pm_errno is set by alpm_set_option */
return(-1);
}
} else if (!strcmp(key, "UPGRADEDELAY")) {
/* The config value is in days, we use seconds */
_alpm_log(PM_LOG_DEBUG, _("config: UpgradeDelay: %i"), (60*60*24) * atol(ptr));
if(alpm_set_option(PM_OPT_UPGRADEDELAY, (60*60*24) * atol(ptr)) == -1) {
/* pm_errno is set by alpm_set_option */
return(-1);
}
} else if (!strcmp(key, "PROXYSERVER")) {
if(alpm_set_option(PM_OPT_PROXYHOST, (long)ptr) == -1) {
/* pm_errno is set by alpm_set_option */
return(-1);
}
} else if (!strcmp(key, "PROXYPORT")) {
if(alpm_set_option(PM_OPT_PROXYPORT, (long)atoi(ptr)) == -1) {
/* pm_errno is set by alpm_set_option */
return(-1);
}
} else {
RET_ERR(PM_ERR_CONF_BAD_SYNTAX, -1);
}
} else {
if(!strcmp(key, "SERVER")) {
/* add to the list */
if(alpm_db_setserver(db, strdup(ptr)) != 0) {
/* pm_errno is set by alpm_set_option */
return(-1);
}
} else {
RET_ERR(PM_ERR_CONF_BAD_SYNTAX, -1);
}
}
line[0] = '\0';
}
}
}
fclose(fp);
return(0);
}
/* @} */
/* vim: set ts=2 sw=2 noet: */
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