/mandos/trunk : contents of plugin-runner.c at revision 170

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21 by Teddy Hogeborn * Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and	1	/* -- coding: utf-8 -- */
	2	/*
	3	* Mandos plugin runner - Run Mandos plugins
	4	*
28 by Teddy Hogeborn * server.conf: New file.	5	* Copyright © 2007-2008 Teddy Hogeborn & Björn Påhlsson
21 by Teddy Hogeborn * Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and	6	*
	7	* This program is free software: you can redistribute it and/or
	8	* modify it under the terms of the GNU General Public License as
	9	* published by the Free Software Foundation, either version 3 of the
	10	* License, or (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful, but
	13	* WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	15	* General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program. If not, see
	19	* <http://www.gnu.org/licenses/>.
	20	*
28 by Teddy Hogeborn * server.conf: New file.	21	* Contact the authors at <mandos@fukt.bsnet.se>.
21 by Teddy Hogeborn * Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and	22	*/
	23
78 by Teddy Hogeborn Add feature to specify custom environment variables for plugins.	24	#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), getline(),
	25	asprintf() */
24.1.26 by Björn Påhlsson tally count of used symbols	26	#include <stddef.h> /* size_t, NULL */
	27	#include <stdlib.h> /* malloc(), exit(), EXIT_FAILURE,
	28	EXIT_SUCCESS, realloc() */
	29	#include <stdbool.h> /* bool, true, false */
	30	#include <stdio.h> /* perror, popen(), fileno(),
	31	fprintf(), stderr, STDOUT_FILENO */
	32	#include <sys/types.h> /* DIR, opendir(), stat(), struct
	33	stat, waitpid(), WIFEXITED(),
	34	WEXITSTATUS(), wait(), pid_t,
	35	uid_t, gid_t, getuid(), getgid(),
	36	dirfd() */
	37	#include <sys/select.h> /* fd_set, select(), FD_ZERO(),
	38	FD_SET(), FD_ISSET(), FD_CLR */
	39	#include <sys/wait.h> /* wait(), waitpid(), WIFEXITED(),
	40	WEXITSTATUS() */
	41	#include <sys/stat.h> /* struct stat, stat(), S_ISREG() */
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	42	#include <iso646.h> /* and, or, not */
	43	#include <dirent.h> /* DIR, struct dirent, opendir(),
24.1.26 by Björn Påhlsson tally count of used symbols	44	readdir(), closedir(), dirfd() */
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	45	#include <unistd.h> /* struct stat, stat(), S_ISREG(),
24.1.26 by Björn Påhlsson tally count of used symbols	46	fcntl(), setuid(), setgid(),
	47	F_GETFD, F_SETFD, FD_CLOEXEC,
	48	access(), pipe(), fork(), close()
	49	dup2, STDOUT_FILENO, _exit(),
	50	execv(), write(), read(),
	51	close() */
	52	#include <fcntl.h> /* fcntl(), F_GETFD, F_SETFD,
	53	FD_CLOEXEC */
78 by Teddy Hogeborn Add feature to specify custom environment variables for plugins.	54	#include <string.h> /* strsep, strlen(), asprintf() */
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	55	#include <errno.h> /* errno */
24.1.26 by Björn Påhlsson tally count of used symbols	56	#include <argp.h> /* struct argp_option, struct
	57	argp_state, struct argp,
	58	argp_parse(), ARGP_ERR_UNKNOWN,
102 by Teddy Hogeborn * plugin-runner.c (process): Set "completed" and "status" as volatile.	59	ARGP_KEY_END, ARGP_KEY_ARG,
	60	error_t */
24.1.26 by Björn Påhlsson tally count of used symbols	61	#include <signal.h> /* struct sigaction, sigemptyset(),
	62	sigaddset(), sigaction(),
	63	sigprocmask(), SIG_BLOCK, SIGCHLD,
	64	SIG_UNBLOCK, kill() */
	65	#include <errno.h> /* errno, EBADF */
13 by Björn Påhlsson Added following support:	66
37 by Teddy Hogeborn Non-tested commit for merge purposes.	67	#define BUFFER_SIZE 256
24.1.69 by Björn Påhlsson added configfile as a optional argument to plugin-runner	68
	69	#define PDIR "/lib/mandos/plugins.d"
	70	#define AFILE "/conf/conf.d/mandos/plugin-runner.conf"
37 by Teddy Hogeborn Non-tested commit for merge purposes.	71
74 by Teddy Hogeborn * Makefile (PREFIX, CONFDIR): New.	72	const char *argp_program_version = "plugin-runner 1.0";
24.1.35 by Björn Påhlsson version 1.0	73	const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
24.1.35 by Björn Påhlsson version 1.0	74
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	75	struct plugin;
	76
	77	typedef struct plugin{
	78	char name; / can be NULL or any plugin name */
	79	char **argv;
	80	int argc;
	81	char **environ;
	82	int envc;
	83	bool disabled;
	84
	85	/* Variables used for running processes*/
13 by Björn Påhlsson Added following support:	86	pid_t pid;
	87	int fd;
	88	char *buffer;
21 by Teddy Hogeborn * Makefile (CFLAGS): Changed to use $(WARN), $(DEBUG), $(COVERAGE) and	89	size_t buffer_size;
	90	size_t buffer_length;
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	91	bool eof;
102 by Teddy Hogeborn * plugin-runner.c (process): Set "completed" and "status" as volatile.	92	volatile bool completed;
	93	volatile int status;
24.1.1 by Björn Påhlsson Added syntax and support for plugbasedclient arguments and how they	94	struct plugin *next;
	95	} plugin;
	96
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	97	static plugin *plugin_list = NULL;
	98
24.1.90 by Björn Påhlsson fixed two bugs:	99	/* Gets an existing plugin based on name,
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	100	or if none is found, creates a new one */
	101	static plugin getplugin(char name){
	102	/* Check for exiting plugin with that name */
	103	for (plugin *p = plugin_list; p != NULL; p = p->next){
24.1.1 by Björn Påhlsson Added syntax and support for plugbasedclient arguments and how they	104	if ((p->name == name)
	105	or (p->name and name and (strcmp(p->name, name) == 0))){
	106	return p;
	107	}
	108	}
	109	/* Create a new plugin */
	110	plugin *new_plugin = malloc(sizeof(plugin));
	111	if (new_plugin == NULL){
78 by Teddy Hogeborn Add feature to specify custom environment variables for plugins.	112	return NULL;
24.1.1 by Björn Påhlsson Added syntax and support for plugbasedclient arguments and how they	113	}
24.1.62 by Björn Påhlsson merge + small bugfix	114	char *copy_name = NULL;
	115	if(name != NULL){
	116	copy_name = strdup(name);
98 by Teddy Hogeborn * plugin-runner.c (getplugin): Only copy "name" if not NULL. Free	117	if(copy_name == NULL){
	118	return NULL;
	119	}
24.1.54 by Björn Påhlsson plugin-runner	120	}
24.1.90 by Björn Påhlsson fixed two bugs:	121
24.1.54 by Björn Påhlsson plugin-runner	122	*new_plugin = (plugin) { .name = copy_name,
78 by Teddy Hogeborn Add feature to specify custom environment variables for plugins.	123	.argc = 1,
	124	.disabled = false,
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	125	.next = plugin_list };
78 by Teddy Hogeborn Add feature to specify custom environment variables for plugins.	126
24.1.1 by Björn Påhlsson Added syntax and support for plugbasedclient arguments and how they	127	new_plugin->argv = malloc(sizeof(char ) 2);
	128	if (new_plugin->argv == NULL){
24.1.62 by Björn Påhlsson merge + small bugfix	129	free(copy_name);
78 by Teddy Hogeborn Add feature to specify custom environment variables for plugins.	130	free(new_plugin);
	131	return NULL;
24.1.1 by Björn Påhlsson Added syntax and support for plugbasedclient arguments and how they	132	}
24.1.54 by Björn Påhlsson plugin-runner	133	new_plugin->argv[0] = copy_name;
24.1.1 by Björn Påhlsson Added syntax and support for plugbasedclient arguments and how they	134	new_plugin->argv[1] = NULL;
135 by Teddy Hogeborn * plugin-runner.c (add_environment): Never insert existing environment	135
78 by Teddy Hogeborn Add feature to specify custom environment variables for plugins.	136	new_plugin->environ = malloc(sizeof(char *));
	137	if(new_plugin->environ == NULL){
24.1.62 by Björn Påhlsson merge + small bugfix	138	free(copy_name);
78 by Teddy Hogeborn Add feature to specify custom environment variables for plugins.	139	free(new_plugin->argv);
	140	free(new_plugin);
	141	return NULL;
	142	}
	143	new_plugin->environ[0] = NULL;
135 by Teddy Hogeborn * plugin-runner.c (add_environment): Never insert existing environment	144
24.1.1 by Björn Påhlsson Added syntax and support for plugbasedclient arguments and how they	145	/* Append the new plugin to the list */
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	146	plugin_list = new_plugin;
24.1.1 by Björn Påhlsson Added syntax and support for plugbasedclient arguments and how they	147	return new_plugin;
	148	}
	149
78 by Teddy Hogeborn Add feature to specify custom environment variables for plugins.	150	/* Helper function for add_argument and add_environment */
	151	static bool add_to_char_array(const char new, char **array,
	152	int *len){
	153	/* Resize the pointed-to array to hold one more pointer */
	154	array = realloc(array, sizeof(char *)
	155	* (size_t) ((*len) + 2));
	156	/* Malloc check */
	157	if(*array == NULL){
	158	return false;
	159	}
	160	/* Make a copy of the new string */
	161	char *copy = strdup(new);
	162	if(copy == NULL){
	163	return false;
	164	}
	165	/* Insert the copy */
	166	(array)[len] = copy;
	167	(*len)++;
	168	/* Add a new terminating NULL pointer to the last element */
	169	(array)[len] = NULL;
	170	return true;
	171	}
	172
	173	/* Add to a plugin's argument vector */
	174	static bool add_argument(plugin p, const char arg){
	175	if(p == NULL){
	176	return false;
	177	}
	178	return add_to_char_array(arg, &(p->argv), &(p->argc));
	179	}
	180
	181	/* Add to a plugin's environment */
136 by Teddy Hogeborn * plugin-runner.c (add_environment): Override existing environment	182	static bool add_environment(plugin p, const char def, bool replace){
78 by Teddy Hogeborn Add feature to specify custom environment variables for plugins.	183	if(p == NULL){
	184	return false;
	185	}
135 by Teddy Hogeborn * plugin-runner.c (add_environment): Never insert existing environment	186	/* namelen = length of name of environment variable */
	187	size_t namelen = (size_t)(strchrnul(def, '=') - def);
	188	/* Search for this environment variable */
	189	for(char *e = p->environ; e != NULL; e++){
24.1.90 by Björn Påhlsson fixed two bugs:	190	if(strncmp(*e, def, namelen + 1) == 0){
136 by Teddy Hogeborn * plugin-runner.c (add_environment): Override existing environment	191	/* It already exists */
	192	if(replace){
24.1.90 by Björn Påhlsson fixed two bugs:	193	char new = realloc(e, strlen(def) + 1);
136 by Teddy Hogeborn * plugin-runner.c (add_environment): Override existing environment	194	if(new == NULL){
	195	return false;
	196	}
	197	*e = new;
	198	strcpy(*e, def);
	199	}
135 by Teddy Hogeborn * plugin-runner.c (add_environment): Never insert existing environment	200	return true;
	201	}
	202	}
78 by Teddy Hogeborn Add feature to specify custom environment variables for plugins.	203	return add_to_char_array(def, &(p->environ), &(p->envc));
	204	}
	205
32 by Teddy Hogeborn * plugins.d/plugbasedclient.c (set_cloexec_flag): New function.	206	/*
	207	* Based on the example in the GNU LibC manual chapter 13.13 "File
	208	* Descriptor Flags".
	209	* *Note File Descriptor Flags:(libc)Descriptor Flags.
	210	*/
37 by Teddy Hogeborn Non-tested commit for merge purposes.	211	static int set_cloexec_flag(int fd)
32 by Teddy Hogeborn * plugins.d/plugbasedclient.c (set_cloexec_flag): New function.	212	{
	213	int ret = fcntl(fd, F_GETFD, 0);
	214	/* If reading the flags failed, return error indication now. */
	215	if(ret < 0){
	216	return ret;
	217	}
	218	/* Store modified flag word in the descriptor. */
	219	return fcntl(fd, F_SETFD, ret \| FD_CLOEXEC);
	220	}
	221
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	222
102 by Teddy Hogeborn * plugin-runner.c (process): Set "completed" and "status" as volatile.	223	/* Mark processes as completed when they exit, and save their exit
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	224	status. */
	225	void handle_sigchld(__attribute__((unused)) int sig){
24.1.65 by Björn Påhlsson * plugin-runner.c (handle_sigchld): Loop until all exited children	226	while(true){
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	227	plugin *proc = plugin_list;
24.1.65 by Björn Påhlsson * plugin-runner.c (handle_sigchld): Loop until all exited children	228	int status;
	229	pid_t pid = waitpid(-1, &status, WNOHANG);
	230	if(pid == 0){
102 by Teddy Hogeborn * plugin-runner.c (process): Set "completed" and "status" as volatile.	231	/* Only still running child processes */
24.1.65 by Björn Påhlsson * plugin-runner.c (handle_sigchld): Loop until all exited children	232	break;
	233	}
	234	if(pid == -1){
	235	if (errno != ECHILD){
	236	perror("waitpid");
	237	}
102 by Teddy Hogeborn * plugin-runner.c (process): Set "completed" and "status" as volatile.	238	/* No child processes */
	239	break;
24.1.65 by Björn Påhlsson * plugin-runner.c (handle_sigchld): Loop until all exited children	240	}
24.1.90 by Björn Påhlsson fixed two bugs:	241
102 by Teddy Hogeborn * plugin-runner.c (process): Set "completed" and "status" as volatile.	242	/* A child exited, find it in process_list */
24.1.65 by Björn Påhlsson * plugin-runner.c (handle_sigchld): Loop until all exited children	243	while(proc != NULL and proc->pid != pid){
	244	proc = proc->next;
	245	}
	246	if(proc == NULL){
	247	/* Process not found in process list */
	248	continue;
	249	}
	250	proc->status = status;
	251	proc->completed = true;
	252	}
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	253	}
24.1.1 by Björn Påhlsson Added syntax and support for plugbasedclient arguments and how they	254
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	255	/* Prints out a password to stdout */
24.1.42 by Björn Påhlsson Added fallback to mandos-client	256	bool print_out_password(const char *buffer, size_t length){
64 by Teddy Hogeborn * mandos-client.c (print_out_password): Strip trailing '\n'.	257	ssize_t ret;
	258	for(size_t written = 0; written < length; written += (size_t)ret){
24.1.42 by Björn Påhlsson Added fallback to mandos-client	259	ret = TEMP_FAILURE_RETRY(write(STDOUT_FILENO, buffer + written,
	260	length - written));
	261	if(ret < 0){
	262	return false;
	263	}
	264	}
	265	return true;
	266	}
	267
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	268	/* Removes and free a plugin from the plugin list */
	269	static void free_plugin(plugin *plugin_node){
	270
	271	for(char *arg = plugin_node->argv; arg != NULL; arg++){
	272	free(*arg);
	273	}
	274	free(plugin_node->argv);
	275	for(char *env = plugin_node->environ; env != NULL; env++){
	276	free(*env);
	277	}
	278	free(plugin_node->environ);
	279	free(plugin_node->buffer);
	280
	281	/* Removes the plugin from the singly-linked list */
	282	if(plugin_node == plugin_list){
	283	/* First one - simple */
	284	plugin_list = plugin_list->next;
	285	} else {
	286	/* Second one or later */
	287	for(plugin *p = plugin_list; p != NULL; p = p->next){
	288	if(p->next == plugin_node){
	289	p->next = plugin_node->next;
	290	break;
	291	}
	292	}
	293	}
	294
	295	free(plugin_node);
	296	}
	297
	298	static void free_plugin_list(void){
	299	while(plugin_list != NULL){
	300	free_plugin(plugin_list);
98 by Teddy Hogeborn * plugin-runner.c (getplugin): Only copy "name" if not NULL. Free	301	}
24.1.54 by Björn Påhlsson plugin-runner	302	}
24.1.54 by Björn Påhlsson plugin-runner	303
13 by Björn Påhlsson Added following support:	304	int main(int argc, char *argv[]){
24.1.69 by Björn Påhlsson added configfile as a optional argument to plugin-runner	305	char *plugindir = NULL;
	306	char *argfile = NULL;
24.1.51 by Björn Påhlsson Added configuration files support for mandos-client	307	FILE *conffp;
24.1.5 by Björn Påhlsson plugbasedclient:	308	size_t d_name_len;
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	309	DIR *dir = NULL;
13 by Björn Påhlsson Added following support:	310	struct dirent *dirst;
13 by Björn Påhlsson Added following support:	311	struct stat st;
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	312	fd_set rfds_all;
13 by Björn Påhlsson Added following support:	313	int ret, maxfd = 0;
24.1.6 by Björn Påhlsson plugbasedclient	314	uid_t uid = 65534;
24.1.6 by Björn Påhlsson plugbasedclient	315	gid_t gid = 65534;
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	316	bool debug = false;
	317	int exitstatus = EXIT_SUCCESS;
24.1.7 by Björn Påhlsson merge	318	struct sigaction old_sigchld_action;
	319	struct sigaction sigchld_action = { .sa_handler = handle_sigchld,
	320	.sa_flags = SA_NOCLDSTOP };
24.1.51 by Björn Påhlsson Added configuration files support for mandos-client	321	char **custom_argv = NULL;
	322	int custom_argc = 0;
	323
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	324	/* Establish a signal handler */
	325	sigemptyset(&sigchld_action.sa_mask);
	326	ret = sigaddset(&sigchld_action.sa_mask, SIGCHLD);
24.1.54 by Björn Påhlsson plugin-runner	327	if(ret == -1){
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	328	perror("sigaddset");
24.1.54 by Björn Påhlsson plugin-runner	329	exitstatus = EXIT_FAILURE;
24.1.54 by Björn Påhlsson plugin-runner	330	goto fallback;
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	331	}
	332	ret = sigaction(SIGCHLD, &sigchld_action, &old_sigchld_action);
24.1.54 by Björn Påhlsson plugin-runner	333	if(ret == -1){
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	334	perror("sigaction");
98 by Teddy Hogeborn * plugin-runner.c (getplugin): Only copy "name" if not NULL. Free	335	exitstatus = EXIT_FAILURE;
24.1.54 by Björn Påhlsson plugin-runner	336	goto fallback;
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	337	}
	338
24.1.1 by Björn Påhlsson Added syntax and support for plugbasedclient arguments and how they	339	/* The options we understand. */
	340	struct argp_option options[] = {
	341	{ .name = "global-options", .key = 'g',
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	342	.arg = "OPTION[,OPTION[,...]]",
	343	.doc = "Options passed to all plugins" },
138 by Teddy Hogeborn * plugin-runner.c: Changed short option for "--global-env" to "-G",	344	{ .name = "global-env", .key = 'G',
78 by Teddy Hogeborn Add feature to specify custom environment variables for plugins.	345	.arg = "VAR=value",
	346	.doc = "Environment variable passed to all plugins" },
24.1.1 by Björn Påhlsson Added syntax and support for plugbasedclient arguments and how they	347	{ .name = "options-for", .key = 'o',
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	348	.arg = "PLUGIN:OPTION[,OPTION[,...]]",
	349	.doc = "Options passed only to specified plugin" },
138 by Teddy Hogeborn * plugin-runner.c: Changed short option for "--global-env" to "-G",	350	{ .name = "env-for", .key = 'E',
78 by Teddy Hogeborn Add feature to specify custom environment variables for plugins.	351	.arg = "PLUGIN:ENV=value",
	352	.doc = "Environment variable passed to specified plugin" },
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	353	{ .name = "disable", .key = 'd',
	354	.arg = "PLUGIN",
	355	.doc = "Disable a specific plugin", .group = 1 },
138 by Teddy Hogeborn * plugin-runner.c: Changed short option for "--global-env" to "-G",	356	{ .name = "enable", .key = 'e',
	357	.arg = "PLUGIN",
	358	.doc = "Enable a specific plugin", .group = 1 },
24.1.5 by Björn Påhlsson plugbasedclient:	359	{ .name = "plugin-dir", .key = 128,
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	360	.arg = "DIRECTORY",
	361	.doc = "Specify a different plugin directory", .group = 2 },
24.1.69 by Björn Påhlsson added configfile as a optional argument to plugin-runner	362	{ .name = "config-file", .key = 129,
	363	.arg = "FILE",
	364	.doc = "Specify a different configuration file", .group = 2 },
	365	{ .name = "userid", .key = 130,
	366	.arg = "ID", .flags = 0,
	367	.doc = "User ID the plugins will run as", .group = 3 },
	368	{ .name = "groupid", .key = 131,
	369	.arg = "ID", .flags = 0,
	370	.doc = "Group ID the plugins will run as", .group = 3 },
	371	{ .name = "debug", .key = 132,
	372	.doc = "Debug mode", .group = 4 },
24.1.1 by Björn Påhlsson Added syntax and support for plugbasedclient arguments and how they	373	{ .name = NULL }
	374	};
	375
133 by Teddy Hogeborn * plugin-runner.c: Break a couple of long lines.	376	error_t parse_opt (int key, char *arg, __attribute__((unused))
	377	struct argp_state *state) {
24.1.1 by Björn Påhlsson Added syntax and support for plugbasedclient arguments and how they	378	switch (key) {
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	379	case 'g': /* --global-options */
24.1.1 by Björn Påhlsson Added syntax and support for plugbasedclient arguments and how they	380	if (arg != NULL){
24.1.50 by Björn Påhlsson changed from using strtok to strsep	381	char *p;
	382	while((p = strsep(&arg, ",")) != NULL){
24.1.51 by Björn Påhlsson Added configuration files support for mandos-client	383	if(p[0] == '\0'){
24.1.50 by Björn Påhlsson changed from using strtok to strsep	384	continue;
	385	}
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	386	if(not add_argument(getplugin(NULL), p)){
78 by Teddy Hogeborn Add feature to specify custom environment variables for plugins.	387	perror("add_argument");
	388	return ARGP_ERR_UNKNOWN;
	389	}
	390	}
	391	}
	392	break;
138 by Teddy Hogeborn * plugin-runner.c: Changed short option for "--global-env" to "-G",	393	case 'G': /* --global-env */
78 by Teddy Hogeborn Add feature to specify custom environment variables for plugins.	394	if(arg == NULL){
	395	break;
	396	}
	397	{
	398	char *envdef = strdup(arg);
	399	if(envdef == NULL){
	400	break;
	401	}
136 by Teddy Hogeborn * plugin-runner.c (add_environment): Override existing environment	402	if(not add_environment(getplugin(NULL), envdef, true)){
78 by Teddy Hogeborn Add feature to specify custom environment variables for plugins.	403	perror("add_environment");
24.1.50 by Björn Påhlsson changed from using strtok to strsep	404	}
24.1.1 by Björn Påhlsson Added syntax and support for plugbasedclient arguments and how they	405	}
	406	break;
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	407	case 'o': /* --options-for */
24.1.1 by Björn Påhlsson Added syntax and support for plugbasedclient arguments and how they	408	if (arg != NULL){
78 by Teddy Hogeborn Add feature to specify custom environment variables for plugins.	409	char *p_name = strsep(&arg, ":");
24.1.90 by Björn Påhlsson fixed two bugs:	410	if(p_name[0] == '\0' or arg == NULL){
24.1.50 by Björn Påhlsson changed from using strtok to strsep	411	break;
	412	}
	413	char *opt = strsep(&arg, ":");
24.1.90 by Björn Påhlsson fixed two bugs:	414	if(opt[0] == '\0' or opt == NULL){
24.1.50 by Björn Påhlsson changed from using strtok to strsep	415	break;
	416	}
24.1.90 by Björn Påhlsson fixed two bugs:	417	char *p;
	418	while((p = strsep(&opt, ",")) != NULL){
	419	if(p[0] == '\0'){
	420	continue;
	421	}
	422	if(not add_argument(getplugin(p_name), p)){
	423	perror("add_argument");
	424	return ARGP_ERR_UNKNOWN;
24.1.50 by Björn Påhlsson changed from using strtok to strsep	425	}
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	426	}
24.1.1 by Björn Påhlsson Added syntax and support for plugbasedclient arguments and how they	427	}
	428	break;
138 by Teddy Hogeborn * plugin-runner.c: Changed short option for "--global-env" to "-G",	429	case 'E': /* --env-for */
78 by Teddy Hogeborn Add feature to specify custom environment variables for plugins.	430	if(arg == NULL){
	431	break;
	432	}
	433	{
	434	char *envdef = strchr(arg, ':');
	435	if(envdef == NULL){
	436	break;
	437	}
	438	char *p_name = strndup(arg, (size_t) (envdef-arg));
	439	if(p_name == NULL){
	440	break;
	441	}
	442	envdef++;
136 by Teddy Hogeborn * plugin-runner.c (add_environment): Override existing environment	443	if(not add_environment(getplugin(p_name), envdef, true)){
78 by Teddy Hogeborn Add feature to specify custom environment variables for plugins.	444	perror("add_environment");
	445	}
	446	}
	447	break;
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	448	case 'd': /* --disable */
24.1.5 by Björn Påhlsson plugbasedclient:	449	if (arg != NULL){
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	450	plugin *p = getplugin(arg);
78 by Teddy Hogeborn Add feature to specify custom environment variables for plugins.	451	if(p == NULL){
	452	return ARGP_ERR_UNKNOWN;
	453	}
	454	p->disabled = true;
24.1.5 by Björn Påhlsson plugbasedclient:	455	}
24.1.5 by Björn Påhlsson plugbasedclient:	456	break;
138 by Teddy Hogeborn * plugin-runner.c: Changed short option for "--global-env" to "-G",	457	case 'e': /* --enable */
	458	if (arg != NULL){
	459	plugin *p = getplugin(arg);
	460	if(p == NULL){
	461	return ARGP_ERR_UNKNOWN;
	462	}
	463	p->disabled = false;
	464	}
	465	break;
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	466	case 128: /* --plugin-dir */
24.1.69 by Björn Påhlsson added configfile as a optional argument to plugin-runner	467	plugindir = strdup(arg);
	468	if(plugindir == NULL){
	469	perror("strdup");
	470	}
24.1.5 by Björn Påhlsson plugbasedclient:	471	break;
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	472	case 129: /* --config-file */
137 by Teddy Hogeborn * plugin-runner.c (main/parse_opt): Removed code for "--config-file".	473	/* This is already done by parse_opt_config_file() */
	474	break;
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	475	case 130: /* --userid */
24.1.6 by Björn Påhlsson plugbasedclient	476	uid = (uid_t)strtol(arg, NULL, 10);
24.1.6 by Björn Påhlsson plugbasedclient	477	break;
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	478	case 131: /* --groupid */
24.1.6 by Björn Påhlsson plugbasedclient	479	gid = (gid_t)strtol(arg, NULL, 10);
24.1.6 by Björn Påhlsson plugbasedclient	480	break;
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	481	case 132: /* --debug */
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	482	debug = true;
	483	break;
24.1.1 by Björn Påhlsson Added syntax and support for plugbasedclient arguments and how they	484	case ARGP_KEY_ARG:
78 by Teddy Hogeborn Add feature to specify custom environment variables for plugins.	485	fprintf(stderr, "Ignoring unknown argument \"%s\"\n", arg);
24.1.1 by Björn Påhlsson Added syntax and support for plugbasedclient arguments and how they	486	break;
	487	case ARGP_KEY_END:
	488	break;
	489	default:
	490	return ARGP_ERR_UNKNOWN;
	491	}
	492	return 0;
	493	}
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	494
137 by Teddy Hogeborn * plugin-runner.c (main/parse_opt): Removed code for "--config-file".	495	/* This option parser is the same as parse_opt() above, except it
	496	ignores everything but the --config-file option. */
	497	error_t parse_opt_config_file (int key, char *arg,
	498	__attribute__((unused))
	499	struct argp_state *state) {
	500	switch (key) {
	501	case 'g': /* --global-options */
138 by Teddy Hogeborn * plugin-runner.c: Changed short option for "--global-env" to "-G",	502	case 'G': /* --global-env */
137 by Teddy Hogeborn * plugin-runner.c (main/parse_opt): Removed code for "--config-file".	503	case 'o': /* --options-for */
138 by Teddy Hogeborn * plugin-runner.c: Changed short option for "--global-env" to "-G",	504	case 'E': /* --env-for */
137 by Teddy Hogeborn * plugin-runner.c (main/parse_opt): Removed code for "--config-file".	505	case 'd': /* --disable */
138 by Teddy Hogeborn * plugin-runner.c: Changed short option for "--global-env" to "-G",	506	case 'e': /* --enable */
137 by Teddy Hogeborn * plugin-runner.c (main/parse_opt): Removed code for "--config-file".	507	case 128: /* --plugin-dir */
	508	break;
	509	case 129: /* --config-file */
	510	argfile = strdup(arg);
	511	if(argfile == NULL){
	512	perror("strdup");
	513	}
	514	break;
	515	case 130: /* --userid */
	516	case 131: /* --groupid */
	517	case 132: /* --debug */
	518	case ARGP_KEY_ARG:
	519	case ARGP_KEY_END:
	520	break;
	521	default:
	522	return ARGP_ERR_UNKNOWN;
	523	}
	524	return 0;
	525	}
	526
	527	struct argp argp = { .options = options,
	528	.parser = parse_opt_config_file,
136 by Teddy Hogeborn * plugin-runner.c (add_environment): Override existing environment	529	.args_doc = "",
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	530	.doc = "Mandos plugin runner -- Run plugins" };
	531
137 by Teddy Hogeborn * plugin-runner.c (main/parse_opt): Removed code for "--config-file".	532	/* Parse using the parse_opt_config_file in order to get the custom
	533	config file location, if any. */
	534	ret = argp_parse (&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
	535	if (ret == ARGP_ERR_UNKNOWN){
	536	fprintf(stderr, "Unknown error while parsing arguments\n");
	537	exitstatus = EXIT_FAILURE;
	538	goto fallback;
	539	}
	540
	541	/* Reset to the normal argument parser */
	542	argp.parser = parse_opt;
	543
136 by Teddy Hogeborn * plugin-runner.c (add_environment): Override existing environment	544	/* Open the configfile if available */
24.1.69 by Björn Påhlsson added configfile as a optional argument to plugin-runner	545	if (argfile == NULL){
	546	conffp = fopen(AFILE, "r");
	547	} else {
	548	conffp = fopen(argfile, "r");
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	549	}
24.1.51 by Björn Påhlsson Added configuration files support for mandos-client	550	if(conffp != NULL){
	551	char *org_line = NULL;
24.1.54 by Björn Påhlsson plugin-runner	552	char p, arg, new_arg, line;
24.1.51 by Björn Påhlsson Added configuration files support for mandos-client	553	size_t size = 0;
	554	ssize_t sret;
	555	const char whitespace_delims[] = " \r\t\f\v\n";
	556	const char comment_delim[] = "#";
	557
24.1.67 by Björn Påhlsson transformed a function to a part of main	558	custom_argc = 1;
	559	custom_argv = malloc(sizeof(char) 2);
	560	if(custom_argv == NULL){
	561	perror("malloc");
	562	exitstatus = EXIT_FAILURE;
	563	goto fallback;
	564	}
	565	custom_argv[0] = argv[0];
	566	custom_argv[1] = NULL;
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	567
133 by Teddy Hogeborn * plugin-runner.c: Break a couple of long lines.	568	/* for each line in the config file, strip whitespace and ignore
	569	commented text */
24.1.51 by Björn Påhlsson Added configuration files support for mandos-client	570	while(true){
	571	sret = getline(&org_line, &size, conffp);
	572	if(sret == -1){
	573	break;
	574	}
	575
	576	line = org_line;
	577	arg = strsep(&line, comment_delim);
	578	while((p = strsep(&arg, whitespace_delims)) != NULL){
	579	if(p[0] == '\0'){
	580	continue;
	581	}
	582	new_arg = strdup(p);
24.1.69 by Björn Påhlsson added configfile as a optional argument to plugin-runner	583	if(new_arg == NULL){
	584	perror("strdup");
	585	exitstatus = EXIT_FAILURE;
	586	free(org_line);
	587	goto fallback;
	588	}
	589
24.1.67 by Björn Påhlsson transformed a function to a part of main	590	custom_argc += 1;
	591	custom_argv = realloc(custom_argv, sizeof(char *)
	592	* ((unsigned int) custom_argc + 1));
	593	if(custom_argv == NULL){
	594	perror("realloc");
24.1.51 by Björn Påhlsson Added configuration files support for mandos-client	595	exitstatus = EXIT_FAILURE;
24.1.67 by Björn Påhlsson transformed a function to a part of main	596	free(org_line);
24.1.54 by Björn Påhlsson plugin-runner	597	goto fallback;
24.1.51 by Björn Påhlsson Added configuration files support for mandos-client	598	}
24.1.67 by Björn Påhlsson transformed a function to a part of main	599	custom_argv[custom_argc-1] = new_arg;
	600	custom_argv[custom_argc] = NULL;
24.1.51 by Björn Påhlsson Added configuration files support for mandos-client	601	}
	602	}
	603	free(org_line);
136 by Teddy Hogeborn * plugin-runner.c (add_environment): Override existing environment	604	} else {
24.1.52 by Björn Påhlsson merge + minor adjustments	605	/* Check for harmful errors and go to fallback. Other errors might
24.1.52 by Björn Påhlsson merge + minor adjustments	606	not affect opening plugins */
24.1.51 by Björn Påhlsson Added configuration files support for mandos-client	607	if (errno == EMFILE or errno == ENFILE or errno == ENOMEM){
	608	perror("fopen");
24.1.8 by Björn Påhlsson plugbasedclient	609	exitstatus = EXIT_FAILURE;
24.1.54 by Björn Påhlsson plugin-runner	610	goto fallback;
24.1.8 by Björn Påhlsson plugbasedclient	611	}
24.1.51 by Björn Påhlsson Added configuration files support for mandos-client	612	}
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	613	/* If there was any arguments from configuration file,
	614	pass them to parser as command arguments */
24.1.51 by Björn Påhlsson Added configuration files support for mandos-client	615	if(custom_argv != NULL){
136 by Teddy Hogeborn * plugin-runner.c (add_environment): Override existing environment	616	ret = argp_parse (&argp, custom_argc, custom_argv, ARGP_IN_ORDER,
	617	0, NULL);
24.1.26 by Björn Påhlsson tally count of used symbols	618	if (ret == ARGP_ERR_UNKNOWN){
64 by Teddy Hogeborn * mandos-client.c (print_out_password): Strip trailing '\n'.	619	fprintf(stderr, "Unknown error while parsing arguments\n");
24.1.26 by Björn Påhlsson tally count of used symbols	620	exitstatus = EXIT_FAILURE;
24.1.54 by Björn Påhlsson plugin-runner	621	goto fallback;
24.1.26 by Björn Påhlsson tally count of used symbols	622	}
24.1.8 by Björn Påhlsson plugbasedclient	623	}
24.1.8 by Björn Påhlsson plugbasedclient	624
136 by Teddy Hogeborn * plugin-runner.c (add_environment): Override existing environment	625	/* Parse actual command line arguments, to let them override the
	626	config file */
	627	ret = argp_parse (&argp, argc, argv, ARGP_IN_ORDER, 0, NULL);
	628	if (ret == ARGP_ERR_UNKNOWN){
	629	fprintf(stderr, "Unknown error while parsing arguments\n");
	630	exitstatus = EXIT_FAILURE;
	631	goto fallback;
	632	}
	633
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	634	if(debug){
	635	for(plugin *p = plugin_list; p != NULL; p=p->next){
	636	fprintf(stderr, "Plugin: %s has %d arguments\n",
32 by Teddy Hogeborn * plugins.d/plugbasedclient.c (set_cloexec_flag): New function.	637	p->name ? p->name : "Global", p->argc - 1);
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	638	for(char *a = p->argv; a != NULL; a++){
	639	fprintf(stderr, "\tArg: %s\n", *a);
	640	}
78 by Teddy Hogeborn Add feature to specify custom environment variables for plugins.	641	fprintf(stderr, "...and %u environment variables\n", p->envc);
	642	for(char *a = p->environ; a != NULL; a++){
	643	fprintf(stderr, "\t%s\n", *a);
	644	}
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	645	}
	646	}
136 by Teddy Hogeborn * plugin-runner.c (add_environment): Override existing environment	647
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	648	/* Strip permissions down to nobody */
24.1.6 by Björn Påhlsson plugbasedclient	649	ret = setuid(uid);
	650	if (ret == -1){
	651	perror("setuid");
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	652	}
24.1.6 by Björn Påhlsson plugbasedclient	653	setgid(gid);
24.1.6 by Björn Påhlsson plugbasedclient	654	if (ret == -1){
39 by Teddy Hogeborn * plugins.d/mandosclient.c (pgp_packet_decrypt): Renamed variables.	655	perror("setgid");
24.1.6 by Björn Påhlsson plugbasedclient	656	}
136 by Teddy Hogeborn * plugin-runner.c (add_environment): Override existing environment	657
24.1.69 by Björn Påhlsson added configfile as a optional argument to plugin-runner	658	if (plugindir == NULL){
	659	dir = opendir(PDIR);
	660	} else {
	661	dir = opendir(plugindir);
	662	}
24.1.6 by Björn Påhlsson plugbasedclient	663
34 by Teddy Hogeborn * plugbasedclient.c (main): Check if plugin dir could be opened. Set	664	if(dir == NULL){
	665	perror("Could not open plugin dir");
	666	exitstatus = EXIT_FAILURE;
24.1.54 by Björn Påhlsson plugin-runner	667	goto fallback;
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	668	}
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	669
34 by Teddy Hogeborn * plugbasedclient.c (main): Check if plugin dir could be opened. Set	670	/* Set the FD_CLOEXEC flag on the directory, if possible */
	671	{
	672	int dir_fd = dirfd(dir);
	673	if(dir_fd >= 0){
	674	ret = set_cloexec_flag(dir_fd);
	675	if(ret < 0){
	676	perror("set_cloexec_flag");
	677	exitstatus = EXIT_FAILURE;
24.1.54 by Björn Påhlsson plugin-runner	678	goto fallback;
34 by Teddy Hogeborn * plugbasedclient.c (main): Check if plugin dir could be opened. Set	679	}
	680	}
	681	}
24.1.1 by Björn Påhlsson Added syntax and support for plugbasedclient arguments and how they	682
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	683	FD_ZERO(&rfds_all);
136 by Teddy Hogeborn * plugin-runner.c (add_environment): Override existing environment	684
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	685	/* Read and execute any executable in the plugin directory*/
13 by Björn Påhlsson Added following support:	686	while(true){
	687	dirst = readdir(dir);
	688
136 by Teddy Hogeborn * plugin-runner.c (add_environment): Override existing environment	689	/* All directory entries have been processed */
13 by Björn Påhlsson Added following support:	690	if(dirst == NULL){
24.1.26 by Björn Påhlsson tally count of used symbols	691	if (errno == EBADF){
	692	perror("readdir");
	693	exitstatus = EXIT_FAILURE;
24.1.54 by Björn Påhlsson plugin-runner	694	goto fallback;
24.1.26 by Björn Påhlsson tally count of used symbols	695	}
13 by Björn Påhlsson Added following support:	696	break;
	697	}
	698
	699	d_name_len = strlen(dirst->d_name);
	700
136 by Teddy Hogeborn * plugin-runner.c (add_environment): Override existing environment	701	/* Ignore dotfiles, backup files and other junk */
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	702	{
	703	bool bad_name = false;
	704
	705	const char const *bad_prefixes[] = { ".", "#", NULL };
	706
	707	const char const *bad_suffixes[] = { "~", "#", ".dpkg-new",
	708	".dpkg-old",
	709	".dpkg-divert", NULL };
	710	for(const char *pre = bad_prefixes; pre != NULL; pre++){
	711	size_t pre_len = strlen(*pre);
	712	if((d_name_len >= pre_len)
	713	and strncmp((dirst->d_name), *pre, pre_len) == 0){
	714	if(debug){
34 by Teddy Hogeborn * plugbasedclient.c (main): Check if plugin dir could be opened. Set	715	fprintf(stderr, "Ignoring plugin dir entry \"%s\""
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	716	" with bad prefix %s\n", dirst->d_name, *pre);
	717	}
	718	bad_name = true;
	719	break;
	720	}
	721	}
	722	if(bad_name){
	723	continue;
	724	}
	725	for(const char *suf = bad_suffixes; suf != NULL; suf++){
	726	size_t suf_len = strlen(*suf);
	727	if((d_name_len >= suf_len)
	728	and (strcmp((dirst->d_name)+d_name_len-suf_len, *suf)
	729	== 0)){
	730	if(debug){
34 by Teddy Hogeborn * plugbasedclient.c (main): Check if plugin dir could be opened. Set	731	fprintf(stderr, "Ignoring plugin dir entry \"%s\""
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	732	" with bad suffix %s\n", dirst->d_name, *suf);
	733	}
	734	bad_name = true;
	735	break;
	736	}
	737	}
	738
	739	if(bad_name){
	740	continue;
	741	}
13 by Björn Påhlsson Added following support:	742	}
78 by Teddy Hogeborn Add feature to specify custom environment variables for plugins.	743
	744	char *filename;
169 by Teddy Hogeborn * plugin-runner.c (main): Bug fix: use built-in default value if	745	if(plugindir == NULL){
	746	ret = asprintf(&filename, PDIR "/%s", dirst->d_name);
	747	} else {
	748	ret = asprintf(&filename, "%s/%s", plugindir, dirst->d_name);
	749	}
78 by Teddy Hogeborn Add feature to specify custom environment variables for plugins.	750	if(ret < 0){
	751	perror("asprintf");
24.1.46 by Björn Påhlsson mandos-client	752	continue;
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	753	}
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	754
24.1.26 by Björn Påhlsson tally count of used symbols	755	ret = stat(filename, &st);
	756	if (ret == -1){
	757	perror("stat");
24.1.46 by Björn Påhlsson mandos-client	758	free(filename);
24.1.46 by Björn Påhlsson mandos-client	759	continue;
24.1.26 by Björn Påhlsson tally count of used symbols	760	}
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	761
	762	/* Ignore non-executable files */
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	763	if (not S_ISREG(st.st_mode) or (access(filename, X_OK) != 0)){
	764	if(debug){
34 by Teddy Hogeborn * plugbasedclient.c (main): Check if plugin dir could be opened. Set	765	fprintf(stderr, "Ignoring plugin dir entry \"%s\""
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	766	" with bad type or mode\n", filename);
	767	}
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	768	free(filename);
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	769	continue;
	770	}
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	771
	772	plugin *p = getplugin(dirst->d_name);
78 by Teddy Hogeborn Add feature to specify custom environment variables for plugins.	773	if(p == NULL){
	774	perror("getplugin");
	775	free(filename);
	776	continue;
	777	}
	778	if(p->disabled){
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	779	if(debug){
34 by Teddy Hogeborn * plugbasedclient.c (main): Check if plugin dir could be opened. Set	780	fprintf(stderr, "Ignoring disabled plugin \"%s\"\n",
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	781	dirst->d_name);
	782	}
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	783	free(filename);
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	784	continue;
	785	}
32 by Teddy Hogeborn * plugins.d/plugbasedclient.c (set_cloexec_flag): New function.	786	{
	787	/* Add global arguments to argument list for this plugin */
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	788	plugin *g = getplugin(NULL);
78 by Teddy Hogeborn Add feature to specify custom environment variables for plugins.	789	if(g != NULL){
	790	for(char *a = g->argv + 1; a != NULL; a++){
	791	if(not add_argument(p, *a)){
	792	perror("add_argument");
	793	}
	794	}
	795	/* Add global environment variables */
	796	for(char *e = g->environ; e != NULL; e++){
136 by Teddy Hogeborn * plugin-runner.c (add_environment): Override existing environment	797	if(not add_environment(p, *e, false)){
78 by Teddy Hogeborn Add feature to specify custom environment variables for plugins.	798	perror("add_environment");
	799	}
	800	}
	801	}
	802	}
	803	/* If this plugin has any environment variables, we will call
	804	using execve and need to duplicate the environment from this
	805	process, too. */
	806	if(p->environ[0] != NULL){
	807	for(char *e = environ; e != NULL; e++){
136 by Teddy Hogeborn * plugin-runner.c (add_environment): Override existing environment	808	if(not add_environment(p, *e, false)){
78 by Teddy Hogeborn Add feature to specify custom environment variables for plugins.	809	perror("add_environment");
	810	}
	811	}
	812	}
	813
98 by Teddy Hogeborn * plugin-runner.c (getplugin): Only copy "name" if not NULL. Free	814	int pipefd[2];
34 by Teddy Hogeborn * plugbasedclient.c (main): Check if plugin dir could be opened. Set	815	ret = pipe(pipefd);
	816	if (ret == -1){
	817	perror("pipe");
	818	exitstatus = EXIT_FAILURE;
24.1.54 by Björn Påhlsson plugin-runner	819	goto fallback;
34 by Teddy Hogeborn * plugbasedclient.c (main): Check if plugin dir could be opened. Set	820	}
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	821	/* Ask OS to automatic close the pipe on exec */
34 by Teddy Hogeborn * plugbasedclient.c (main): Check if plugin dir could be opened. Set	822	ret = set_cloexec_flag(pipefd[0]);
	823	if(ret < 0){
	824	perror("set_cloexec_flag");
	825	exitstatus = EXIT_FAILURE;
24.1.54 by Björn Påhlsson plugin-runner	826	goto fallback;
34 by Teddy Hogeborn * plugbasedclient.c (main): Check if plugin dir could be opened. Set	827	}
	828	ret = set_cloexec_flag(pipefd[1]);
	829	if(ret < 0){
	830	perror("set_cloexec_flag");
	831	exitstatus = EXIT_FAILURE;
24.1.54 by Björn Påhlsson plugin-runner	832	goto fallback;
34 by Teddy Hogeborn * plugbasedclient.c (main): Check if plugin dir could be opened. Set	833	}
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	834	/* Block SIGCHLD until process is safely in process list */
	835	ret = sigprocmask (SIG_BLOCK, &sigchld_action.sa_mask, NULL);
	836	if(ret < 0){
	837	perror("sigprocmask");
	838	exitstatus = EXIT_FAILURE;
24.1.54 by Björn Påhlsson plugin-runner	839	goto fallback;
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	840	}
136 by Teddy Hogeborn * plugin-runner.c (add_environment): Override existing environment	841	/* Starting a new process to be watched */
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	842	pid_t pid = fork();
24.1.46 by Björn Påhlsson mandos-client	843	if(pid == -1){
	844	perror("fork");
	845	exitstatus = EXIT_FAILURE;
24.1.54 by Björn Påhlsson plugin-runner	846	goto fallback;
24.1.46 by Björn Påhlsson mandos-client	847	}
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	848	if(pid == 0){
	849	/* this is the child process */
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	850	ret = sigaction(SIGCHLD, &old_sigchld_action, NULL);
	851	if(ret < 0){
	852	perror("sigaction");
	853	_exit(EXIT_FAILURE);
	854	}
	855	ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
	856	if(ret < 0){
	857	perror("sigprocmask");
	858	_exit(EXIT_FAILURE);
	859	}
24.1.26 by Björn Påhlsson tally count of used symbols	860
	861	ret = dup2(pipefd[1], STDOUT_FILENO); /* replace our stdout */
	862	if(ret == -1){
	863	perror("dup2");
	864	_exit(EXIT_FAILURE);
	865	}
34 by Teddy Hogeborn * plugbasedclient.c (main): Check if plugin dir could be opened. Set	866
	867	if(dirfd(dir) < 0){
	868	/* If dir has no file descriptor, we could not set FD_CLOEXEC
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	869	above and must now close it manually here. */
34 by Teddy Hogeborn * plugbasedclient.c (main): Check if plugin dir could be opened. Set	870	closedir(dir);
33 by Teddy Hogeborn * plugins.d/plugbasedclient.c (main): Close the pipe fd after dup2:ing	871	}
78 by Teddy Hogeborn Add feature to specify custom environment variables for plugins.	872	if(p->environ[0] == NULL){
	873	if(execv(filename, p->argv) < 0){
	874	perror("execv");
	875	_exit(EXIT_FAILURE);
	876	}
	877	} else {
	878	if(execve(filename, p->argv, p->environ) < 0){
	879	perror("execve");
	880	_exit(EXIT_FAILURE);
	881	}
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	882	}
	883	/* no return */
	884	}
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	885	/* Parent process */
	886	close(pipefd[1]); /* Close unused write end of pipe */
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	887	free(filename);
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	888	plugin *new_plugin = getplugin(dirst->d_name);
	889	if (new_plugin == NULL){
	890	perror("getplugin");
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	891	ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
	892	if(ret < 0){
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	893	perror("sigprocmask");
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	894	}
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	895	exitstatus = EXIT_FAILURE;
24.1.54 by Björn Påhlsson plugin-runner	896	goto fallback;
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	897	}
	898
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	899	new_plugin->pid = pid;
	900	new_plugin->fd = pipefd[0];
	901
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	902	/* Unblock SIGCHLD so signal handler can be run if this process
	903	has already completed */
	904	ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask, NULL);
	905	if(ret < 0){
	906	perror("sigprocmask");
	907	exitstatus = EXIT_FAILURE;
24.1.54 by Björn Påhlsson plugin-runner	908	goto fallback;
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	909	}
	910
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	911	FD_SET(new_plugin->fd, &rfds_all);
34 by Teddy Hogeborn * plugbasedclient.c (main): Check if plugin dir could be opened. Set	912
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	913	if (maxfd < new_plugin->fd){
	914	maxfd = new_plugin->fd;
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	915	}
	916
13 by Björn Påhlsson Added following support:	917	}
34 by Teddy Hogeborn * plugbasedclient.c (main): Check if plugin dir could be opened. Set	918
13 by Björn Påhlsson Added following support:	919	closedir(dir);
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	920	dir = NULL;
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	921
	922	for(plugin *p = plugin_list; p != NULL; p = p->next){
	923	if(p->pid != 0){
	924	break;
	925	}
	926	if(p->next == NULL){
	927	fprintf(stderr, "No plugin processes started. Incorrect plugin"
	928	" directory?\n");
	929	free_plugin_list();
	930	}
34 by Teddy Hogeborn * plugbasedclient.c (main): Check if plugin dir could be opened. Set	931	}
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	932
	933	/* Main loop while running plugins exist */
	934	while(plugin_list){
34 by Teddy Hogeborn * plugbasedclient.c (main): Check if plugin dir could be opened. Set	935	fd_set rfds = rfds_all;
	936	int select_ret = select(maxfd+1, &rfds, NULL, NULL, NULL);
	937	if (select_ret == -1){
	938	perror("select");
	939	exitstatus = EXIT_FAILURE;
24.1.54 by Björn Påhlsson plugin-runner	940	goto fallback;
34 by Teddy Hogeborn * plugbasedclient.c (main): Check if plugin dir could be opened. Set	941	}
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	942	/* OK, now either a process completed, or something can be read
	943	from one of them */
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	944	for(plugin *proc = plugin_list; proc != NULL; proc = proc->next){
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	945	/* Is this process completely done? */
	946	if(proc->eof and proc->completed){
	947	/* Only accept the plugin output if it exited cleanly */
	948	if(not WIFEXITED(proc->status)
	949	or WEXITSTATUS(proc->status) != 0){
	950	/* Bad exit by plugin */
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	951
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	952	if(debug){
	953	if(WIFEXITED(proc->status)){
60 by Teddy Hogeborn * mandos-client.c (main): Cast pid_t to unsigned int before printing.	954	fprintf(stderr, "Plugin %u exited with status %d\n",
	955	(unsigned int) (proc->pid),
	956	WEXITSTATUS(proc->status));
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	957	} else if(WIFSIGNALED(proc->status)) {
60 by Teddy Hogeborn * mandos-client.c (main): Cast pid_t to unsigned int before printing.	958	fprintf(stderr, "Plugin %u killed by signal %d\n",
	959	(unsigned int) (proc->pid),
	960	WTERMSIG(proc->status));
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	961	} else if(WCOREDUMP(proc->status)){
60 by Teddy Hogeborn * mandos-client.c (main): Cast pid_t to unsigned int before printing.	962	fprintf(stderr, "Plugin %d dumped core\n",
	963	(unsigned int) (proc->pid));
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	964	}
	965	}
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	966
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	967	/* Remove the plugin */
	968	FD_CLR(proc->fd, &rfds_all);
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	969
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	970	/* Block signal while modifying process_list */
102 by Teddy Hogeborn * plugin-runner.c (process): Set "completed" and "status" as volatile.	971	ret = sigprocmask(SIG_BLOCK, &sigchld_action.sa_mask, NULL);
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	972	if(ret < 0){
	973	perror("sigprocmask");
	974	exitstatus = EXIT_FAILURE;
24.1.54 by Björn Påhlsson plugin-runner	975	goto fallback;
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	976	}
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	977	free_plugin(proc);
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	978	/* We are done modifying process list, so unblock signal */
	979	ret = sigprocmask (SIG_UNBLOCK, &sigchld_action.sa_mask,
	980	NULL);
	981	if(ret < 0){
	982	perror("sigprocmask");
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	983	exitstatus = EXIT_FAILURE;
	984	goto fallback;
	985	}
	986
	987	if(plugin_list == NULL){
	988	break;
	989	}
	990	continue;
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	991	}
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	992
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	993	/* This process exited nicely, so print its buffer */
24.1.42 by Björn Påhlsson Added fallback to mandos-client	994
102 by Teddy Hogeborn * plugin-runner.c (process): Set "completed" and "status" as volatile.	995	bool bret = print_out_password(proc->buffer,
	996	proc->buffer_length);
24.1.42 by Björn Påhlsson Added fallback to mandos-client	997	if(not bret){
	998	perror("print_out_password");
	999	exitstatus = EXIT_FAILURE;
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	1000	}
24.1.54 by Björn Påhlsson plugin-runner	1001	goto fallback;
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	1002	}
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	1003
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	1004	/* This process has not completed. Does it have any output? */
	1005	if(proc->eof or not FD_ISSET(proc->fd, &rfds)){
	1006	/* This process had nothing to say at this time */
34 by Teddy Hogeborn * plugbasedclient.c (main): Check if plugin dir could be opened. Set	1007	continue;
	1008	}
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	1009	/* Before reading, make the process' data buffer large enough */
34 by Teddy Hogeborn * plugbasedclient.c (main): Check if plugin dir could be opened. Set	1010	if(proc->buffer_length + BUFFER_SIZE > proc->buffer_size){
	1011	proc->buffer = realloc(proc->buffer, proc->buffer_size
	1012	+ (size_t) BUFFER_SIZE);
	1013	if (proc->buffer == NULL){
	1014	perror("malloc");
	1015	exitstatus = EXIT_FAILURE;
24.1.54 by Björn Påhlsson plugin-runner	1016	goto fallback;
34 by Teddy Hogeborn * plugbasedclient.c (main): Check if plugin dir could be opened. Set	1017	}
	1018	proc->buffer_size += BUFFER_SIZE;
	1019	}
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	1020	/* Read from the process */
34 by Teddy Hogeborn * plugbasedclient.c (main): Check if plugin dir could be opened. Set	1021	ret = read(proc->fd, proc->buffer + proc->buffer_length,
	1022	BUFFER_SIZE);
	1023	if(ret < 0){
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	1024	/* Read error from this process; ignore the error */
34 by Teddy Hogeborn * plugbasedclient.c (main): Check if plugin dir could be opened. Set	1025	continue;
	1026	}
	1027	if(ret == 0){
	1028	/* got EOF */
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	1029	proc->eof = true;
	1030	} else {
	1031	proc->buffer_length += (size_t) ret;
13 by Björn Påhlsson Added following support:	1032	}
	1033	}
	1034	}
24.1.45 by Björn Påhlsson Fixed fallback on error in mandos-client	1035
	1036
24.1.54 by Björn Påhlsson plugin-runner	1037	fallback:
24.1.42 by Björn Påhlsson Added fallback to mandos-client	1038
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	1039	if(plugin_list == NULL or exitstatus != EXIT_SUCCESS){
102 by Teddy Hogeborn * plugin-runner.c (process): Set "completed" and "status" as volatile.	1040	/* Fallback if all plugins failed, none are found or an error
	1041	occured */
24.1.42 by Björn Påhlsson Added fallback to mandos-client	1042	bool bret;
	1043	fprintf(stderr, "Going to fallback mode using getpass(3)\n");
	1044	char *passwordbuffer = getpass("Password: ");
168 by Teddy Hogeborn * initramfs-tools-hook: Use long options where available. Use only	1045	size_t len = strlen(passwordbuffer);
	1046	/* Strip trailing newline */
	1047	if(len > 0 and passwordbuffer[len-1] == '\n'){
	1048	passwordbuffer[len-1] = '\0'; /* not strictly necessary */
	1049	len--;
	1050	}
	1051	bret = print_out_password(passwordbuffer, len);
24.1.42 by Björn Påhlsson Added fallback to mandos-client	1052	if(not bret){
	1053	perror("print_out_password");
	1054	exitstatus = EXIT_FAILURE;
	1055	}
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	1056	}
24.1.42 by Björn Påhlsson Added fallback to mandos-client	1057
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	1058	/* Restore old signal handler */
24.1.54 by Björn Påhlsson plugin-runner	1059	ret = sigaction(SIGCHLD, &old_sigchld_action, NULL);
	1060	if(ret == -1){
	1061	perror("sigaction");
	1062	exitstatus = EXIT_FAILURE;
	1063	}
	1064
	1065	if(custom_argv != NULL){
24.1.67 by Björn Påhlsson transformed a function to a part of main	1066	for(char *arg = custom_argv+1; arg != NULL; arg++){
24.1.54 by Björn Påhlsson plugin-runner	1067	free(*arg);
78 by Teddy Hogeborn Add feature to specify custom environment variables for plugins.	1068	}
24.1.54 by Björn Påhlsson plugin-runner	1069	free(custom_argv);
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	1070	}
	1071
	1072	if(dir != NULL){
	1073	closedir(dir);
	1074	}
	1075
	1076	/* Free the process list and kill the processes */
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	1077	for(plugin *p = plugin_list; p != NULL; p = p->next){
	1078	if(p->pid != 0){
	1079	close(p->fd);
	1080	ret = kill(p->pid, SIGTERM);
	1081	if(ret == -1 and errno != ESRCH){
	1082	/* Set-uid proccesses might not get closed */
	1083	perror("kill");
	1084	}
24.1.26 by Björn Påhlsson tally count of used symbols	1085	}
13 by Björn Påhlsson Added following support:	1086	}
13 by Björn Påhlsson Added following support:	1087
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	1088	/* Wait for any remaining child processes to terminate */
	1089	do{
	1090	ret = wait(NULL);
	1091	} while(ret >= 0);
	1092	if(errno != ECHILD){
	1093	perror("wait");
	1094	}
24.1.69 by Björn Påhlsson added configfile as a optional argument to plugin-runner	1095
24.1.76 by Björn Påhlsson Rearranged so plugins and processes is the same thing	1096	free_plugin_list();
	1097
24.1.69 by Björn Påhlsson added configfile as a optional argument to plugin-runner	1098	free(plugindir);
	1099	free(argfile);
35 by Teddy Hogeborn * plugbasedclient.c (struct process): New fields "eof", "completed",	1100
31 by Teddy Hogeborn * plugins.d/plugbasedclient.c: Update include file comments.	1101	return exitstatus;
13 by Björn Påhlsson Added following support:	1102	}