Hello, I used this https://wiki.archlinux.org/index.php/User:Allan/Pacman_Hooks as a Project to learn c (so keep that in mind when you criticize the patch :-) ). Anyway, here's an example config file: /etc/pacman.d/hooks.conf: [testhook] Package = lynx nano Package = vim When = PreRemove [fonts] File = usr/share/fonts/* When = PostUpgrade --------------------------------------------------- You can define more than one Package that triggers a hook, either separated by spaces in the "Package ="line, or in a separate "Package =" line or a mix of both. The "File = " argument can be anything that get matched by fnmatch(...). You can also use "Package" and "File" within the same hook. In this case either one of them will trigger the hook (in other words: Package || File). "When" can be one of the following: PreRemove, PostRemove, PreUpgrade, PostUpgrade, PreInstall or PostInstall. For each hook, there needs to be a corresponding file in /etc/pacman.d/hooks.d. pacman.d ├── hooks.conf ├── hooks.d │ ├── fonts* │ └── testhook* Things i don't like, but i don't really now how to fix those: - The global variable HOOK_LIST - The paths to hooks.d and hooks.conf are hardcoded - The parsing of the config file is really ugly - The "File" argument can't begin with a / because it is matched against alpm_pkg_get_data and that file-strings don't have the leading / Greetings, Sascha Kruse P.s I don't mind, if you say, that this is too broken to get included.
From 9ac289d0c495a05239441a8ffe33975f32c3ef97 Mon Sep 17 00:00:00 2001 From: Sascha Kruse <knopwob@googlemail.com> Date: Sat, 29 Jan 2011 15:00:55 +0100 Subject: [PATCH] hooks
--- lib/libalpm/Makefile.am | 1 + lib/libalpm/add.c | 5 + lib/libalpm/alpm.c | 1 + lib/libalpm/hooks.c | 217 +++++++++++++++++++++++++++++++++++++++++++++++ lib/libalpm/hooks.h | 43 +++++++++ lib/libalpm/remove.c | 3 + lib/libalpm/trans.c | 2 + 7 files changed, 272 insertions(+), 0 deletions(-) create mode 100644 lib/libalpm/hooks.c create mode 100644 lib/libalpm/hooks.h diff --git a/lib/libalpm/Makefile.am b/lib/libalpm/Makefile.am index da663cb..f23da73 100644 --- a/lib/libalpm/Makefile.am +++ b/lib/libalpm/Makefile.am @@ -38,6 +38,7 @@ libalpm_la_SOURCES = \ graph.h \ group.h group.c \ handle.h handle.c \ + hooks.h hooks.c \ log.h log.c \ package.h package.c \ remove.h remove.c \ diff --git a/lib/libalpm/add.c b/lib/libalpm/add.c index d4c56de..5bb0b0f 100644 --- a/lib/libalpm/add.c +++ b/lib/libalpm/add.c @@ -48,6 +48,7 @@ #include "deps.h" #include "remove.h" #include "handle.h" +#include "hooks.h" /** Add a file target to the transaction. * @param target the name of the file target to add @@ -516,6 +517,7 @@ static int commit_single_pkg(pmpkg_t *newpkg, size_t pkg_current, _alpm_runscriptlet(handle->root, newpkg->origin_data.file, "pre_upgrade", newpkg->version, oldpkg->version, trans); } + _trigger_hooks(newpkg, "PreUpgrade"); } else { is_upgrade = 0; @@ -528,6 +530,7 @@ static int commit_single_pkg(pmpkg_t *newpkg, size_t pkg_current, _alpm_runscriptlet(handle->root, newpkg->origin_data.file, "pre_install", newpkg->version, NULL, trans); } + _trigger_hooks(newpkg, "PreInstall"); } /* we override any pre-set reason if we have alldeps or allexplicit set */ @@ -696,9 +699,11 @@ static int commit_single_pkg(pmpkg_t *newpkg, size_t pkg_current, _alpm_runscriptlet(handle->root, scriptlet, "post_upgrade", alpm_pkg_get_version(newpkg), oldpkg ? alpm_pkg_get_version(oldpkg) : NULL, trans); + _trigger_hooks(newpkg, "PostUpgrade"); } else { _alpm_runscriptlet(handle->root, scriptlet, "post_install", alpm_pkg_get_version(newpkg), NULL, trans); + _trigger_hooks(newpkg, "PostInstall"); } } diff --git a/lib/libalpm/alpm.c b/lib/libalpm/alpm.c index 2a9f460..e72de6d 100644 --- a/lib/libalpm/alpm.c +++ b/lib/libalpm/alpm.c @@ -63,6 +63,7 @@ int SYMEXPORT alpm_initialize(void) fetchConnectionCacheInit(5, 1); #endif + _parse_hooks_config(); return(0); } diff --git a/lib/libalpm/hooks.c b/lib/libalpm/hooks.c new file mode 100644 index 0000000..e1ecfab --- /dev/null +++ b/lib/libalpm/hooks.c @@ -0,0 +1,217 @@ +/* + * package.h + * + * Copyright (c) 2006-2011 Pacman Development Team <pacman-dev@archlinux.org> + * Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.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 <alpm.h> +#include <alpm_list.h> +#include <stdio.h> +#include <string.h> +#include <ctype.h> +#include <stdlib.h> +#include <fnmatch.h> +/* pacman */ +#include "package.h" +#include "util.h" +#include "hooks.h" + + +int _run_hook(hook_t *hook) +{ + char *cmd; + int retval; + + cmd = malloc(strlen("/etc/pacman.d/hooks.d/") + strlen(hook->name) + 1); + sprintf(cmd, "/etc/pacman.d/hooks.d/%s", hook->name); + + retval = system(cmd); + if(retval == -1) { + } else if(retval != 0) { + } + return (retval); +} + +void _run_postponed_hooks(void) +{ + hook_t *hook; + alpm_list_t *i; + + for(i = HOOK_LIST; i; i = alpm_list_next(i)) { + hook = alpm_list_getdata(i); + if(hook->triggered) { + _run_hook(hook); + } + } +} + +void _trigger_hooks(pmpkg_t *pkg, char *when) +{ + hook_t *hook; + alpm_list_t *i, *j, *k; + alpm_list_t *pkgfiles; + const char *pkgname; + + pkgname = alpm_pkg_get_name(pkg); + pkgfiles = alpm_pkg_get_files(pkg); + + for(i = HOOK_LIST; i; i = alpm_list_next(i)) { + hook = alpm_list_getdata(i); + + /* trigger package based hooks */ + if(strcmp(hook->when, when) == 0 || + strcmp(hook->when, "Transaction") == 0) { + for(j = hook->pkg_triggers; j; j = alpm_list_next(j)) { + if(strcmp(pkgname, alpm_list_getdata(j)) == 0) { + if(strcmp(when, "Install") == 0 + || strcmp(when, "PostInstall") == 0 + || strcmp(when, "PreRemove") == 0) { + _run_hook(hook); + return; + } else { + hook->triggered++; + return; + } + } + } + + /* trigger file based hooks */ + for(j = hook->file_triggers; j; j = alpm_list_next(j)) { + for(k = pkgfiles; k; k = alpm_list_next(k)) { + if(fnmatch(alpm_list_getdata(j), alpm_list_getdata(k), 0) == 0) { + if(strcmp(when, "Install") == 0 + || strcmp(when, "PostInstall") == 0 + || strcmp(when, "PreRemove") == 0) { + _run_hook(hook); + return; + } else { + hook->triggered++; + return; + } + } + } + } + } + } +} + +int _parse_hooks_config(void) +{ + FILE *config; + char linebuf[128]; + char *cur, *look_ahead, *tmp, *key, *value; + + hook_t *tmp_hook = NULL; + + + config = fopen("/etc/pacman.d/hooks.conf", "r"); + + HOOK_LIST = NULL; + + if(config == NULL) { + return (1); + } + + while(fgets(linebuf, 127, config)) { + /* skip over whitespaces */ + for(cur = linebuf; isspace(*cur) ; cur++); + + /* ignore lines beginning with '#' */ + if(*cur == '#') { + continue; + } + if(*cur == '\0') { + continue; + } + + if(*cur == '[') { + /* we enter a new section */ + if(tmp_hook != NULL) { + /* ignore packages without name */ + if(tmp_hook->name != NULL) { + HOOK_LIST = alpm_list_add(HOOK_LIST, tmp_hook); + } + } + tmp_hook = malloc(sizeof(hook_t)); + tmp_hook->name = NULL; + tmp_hook->pkg_triggers = NULL; + tmp_hook->file_triggers = NULL; + tmp_hook->triggered = 0; + tmp_hook->when = 0; + + cur++; + for(look_ahead = cur; *look_ahead != ']' && *look_ahead != '\0'; look_ahead++); + if(*look_ahead == '\0') { + return (2); + } + + tmp_hook->name = malloc(look_ahead - cur + 1); + strncpy(tmp_hook->name, cur, look_ahead - cur); + tmp_hook->name[look_ahead - cur] = '\0'; + continue; + } + + key = cur; + value = strstr(linebuf, "="); + if(value == NULL) { + return (2); + } + + value++; + for(; isspace(*value) && *value != '\0'; value++); + if(*value == '\0') { + return 2; + } + + if(strncmp("Package", key, strlen("Package")) == 0) { + while(*value != '\0') { + for(look_ahead = value; isalnum(*look_ahead); look_ahead++); + tmp = malloc(look_ahead - value + 1); + strncpy(tmp, value, look_ahead - value); + tmp[look_ahead - value] = '\0'; + tmp_hook->pkg_triggers = alpm_list_add(tmp_hook->pkg_triggers, tmp); + tmp = NULL; + value = look_ahead+1; + /* skip whitespaces */ + for(; isspace(*value) ; value++); + } + } + + if(strncmp("File", key, strlen("File")) == 0) { + for(look_ahead = value; *look_ahead != '\n'; look_ahead++); + tmp = malloc(look_ahead - value + 1); + strncpy(tmp, value, look_ahead - value); + tmp[look_ahead - value + 1] = '\0'; + tmp_hook->file_triggers = alpm_list_add(tmp_hook->file_triggers, tmp); + } + if(strncmp("When", key, strlen("When")) == 0) { + for(look_ahead = value; isalnum(*look_ahead); look_ahead++); + tmp_hook->when = malloc(look_ahead - value + 1); + strncpy(tmp_hook->when, value, look_ahead - value); + tmp_hook->when[look_ahead - value] = '\0'; + } + } + if(tmp_hook != NULL) { + /* ignore hooks without name */ + if(tmp_hook->name != NULL) { + HOOK_LIST = alpm_list_add(HOOK_LIST, tmp_hook); + } + } + return 0; +} +/* vim: set ts=2 sw=2 noet: */ diff --git a/lib/libalpm/hooks.h b/lib/libalpm/hooks.h new file mode 100644 index 0000000..15bd47e --- /dev/null +++ b/lib/libalpm/hooks.h @@ -0,0 +1,43 @@ +/* + * package.h + * + * Copyright (c) 2006-2011 Pacman Development Team <pacman-dev@archlinux.org> + * Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.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 _PM_HOOKS_H +#define _PM_HOOKS_H + +#include <alpm.h> + +typedef struct hook { + char *name; + alpm_list_t *pkg_triggers; + alpm_list_t *file_triggers; + int triggered; + char *when; +} hook_t; + +/* global Variables */ +alpm_list_t *HOOK_LIST; + + +void _run_postponed_hooks(void); +void _trigger_hooks(pmpkg_t *pkg, char *when); +int _parse_hooks_config(void); +#endif /* _PM_HOOKS_H */ + +/* vim: set ts=2 sw=2 noet: */ diff --git a/lib/libalpm/remove.c b/lib/libalpm/remove.c index 5fba0b0..3bd32e2 100644 --- a/lib/libalpm/remove.c +++ b/lib/libalpm/remove.c @@ -45,6 +45,7 @@ #include "deps.h" #include "handle.h" #include "alpm.h" +#include "hooks.h" int SYMEXPORT alpm_remove_target(const char *target) { @@ -409,6 +410,7 @@ int _alpm_remove_packages(pmtrans_t *trans, pmdb_t *db) _alpm_runscriptlet(handle->root, scriptlet, "pre_remove", alpm_pkg_get_version(info), NULL, trans); } + _trigger_hooks(info, "PreRemove"); if(!(trans->flags & PM_TRANS_FLAG_DBONLY)) { alpm_list_t *files = alpm_pkg_get_files(info); @@ -454,6 +456,7 @@ int _alpm_remove_packages(pmtrans_t *trans, pmdb_t *db) _alpm_runscriptlet(handle->root, scriptlet, "post_remove", alpm_pkg_get_version(info), NULL, trans); } + _trigger_hooks(info, "PostRemve"); /* remove the package from the database */ _alpm_log(PM_LOG_DEBUG, "updating database\n"); diff --git a/lib/libalpm/trans.c b/lib/libalpm/trans.c index 804ab7a..64b6e7d 100644 --- a/lib/libalpm/trans.c +++ b/lib/libalpm/trans.c @@ -45,6 +45,7 @@ #include "sync.h" #include "alpm.h" #include "deps.h" +#include "hooks.h" /** \addtogroup alpm_trans Transaction Functions * @brief Functions to manipulate libalpm transactions @@ -209,6 +210,7 @@ int SYMEXPORT alpm_trans_commit(alpm_list_t **data) return(-1); } } + _run_postponed_hooks(); trans->state = STATE_COMMITED; -- 1.7.3.5