[ashd.git] / src / dirplex / dirplex.c

/*
    ashd - A Sane HTTP Daemon
    Copyright (C) 2008  Fredrik Tolf <fredrik@dolda2000.com>

    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 3 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 <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <sys/stat.h>
#include <ctype.h>
#include <dirent.h>
#include <time.h>
#include <sys/wait.h>
#include <sys/signal.h>

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <utils.h>
#include <log.h>
#include <req.h>
#include <proc.h>
#include <resp.h>
#include <cf.h>

#include "dirplex.h"

time_t now;

static void chinit(void *idata)
{
    char *twd = idata;
    
    if(twd != NULL) {
	/* This should never be able to fail other than for critical
	 * I/O errors or some such, since the path has already been
	 * traversed. */
	if(chdir(twd))
	    exit(127);
    }
}

static void childerror(struct hthead *req, int fd)
{
    if(errno == EAGAIN)
	simpleerror(fd, 500, "Server Error", "The request handler is overloaded.");
    else
	simpleerror(fd, 500, "Server Error", "The request handler crashed.");
}

static void handle(struct hthead *req, int fd, char *path, struct pattern *pat)
{
    struct child *ch;
    struct config *ccf;
    struct headmod *head;
    char *twd;

    for(head = pat->headers; head != NULL; head = head->next) {
	headrmheader(req, head->name);
	headappheader(req, head->name, head->value);
    }
    if(!strncmp(path, "./", 2) && path[2])
	path += 2;
    if(pat->fchild) {
	headappheader(req, "X-Ash-File", path);
	stdforkserve(pat->fchild, req, fd, NULL, NULL);
    } else {
	if((ch = findchild(path, pat->childnm, &ccf)) == NULL) {
	    flog(LOG_ERR, "child %s requested, but was not declared", pat->childnm);
	    simpleerror(fd, 500, "Configuration Error", "The server is erroneously configured. Handler %s was requested, but not declared.", pat->childnm);
	    return;
	}
	if((twd = ccf?ccf->path:NULL) != NULL) {
	    if(!strcmp(twd, ".")) {
		twd = NULL;
	    } else if(strncmp(path, twd, strlen(twd)) || (path[strlen(twd)] != '/')) {
		/* Should be an impossible case under the current (and
		 * foreseeable) scheme. */
		simpleerror(fd, 500, "Server Error", "An internal server error occurred.");
		return;
	    } else {
		path = path + strlen(twd) + 1;
	    }
	}
	headappheader(req, "X-Ash-File", path);
	if(childhandle(ch, req, fd, chinit, twd))
	    childerror(req, fd);
    }
}

static void handle404(struct hthead *req, int fd, char *path)
{
    struct child *ch;
    struct config *ccf;
    char *tmp;
    
    tmp = sstrdup(path);
    ch = findchild(tmp, ".notfound", &ccf);
    if(childhandle(ch, req, fd, chinit, ccf?ccf->path:NULL))
	childerror(req, fd);
    free(tmp);
}

static void handlefile(struct hthead *req, int fd, char *path)
{
    struct pattern *pat;

    if((pat = findmatch(path, 0, 0)) == NULL) {
	handle404(req, fd, path);
	return;
    }
    handle(req, fd, path, pat);
}

static char *findfile(char *path, char *name, struct stat *sb)
{
    DIR *dir;
    struct stat sbuf;
    struct dirent *dent;
    char *p, *fp, *ret;
    
    if(sb == NULL)
	sb = &sbuf;
    if((dir = opendir(path)) == NULL)
	return(NULL);
    ret = NULL;
    while((dent = readdir(dir)) != NULL) {
	/* Ignore backup files.
	 * XXX: There is probably a better and more extensible way to
	 * do this. */
	if(dent->d_name[strlen(dent->d_name) - 1] == '~')
	    continue;
	if((p = strchr(dent->d_name, '.')) == NULL)
	    continue;
	if(p - dent->d_name != strlen(name))
	    continue;
	if(strncmp(dent->d_name, name, strlen(name)))
	    continue;
	fp = sprintf3("%s/%s", path, dent->d_name);
	if(stat(fp, sb))
	    continue;
	if(!S_ISREG(sb->st_mode))
	    continue;
	ret = sstrdup(fp);
	break;
    }
    closedir(dir);
    return(ret);
}

static void handledir(struct hthead *req, int fd, char *path)
{
    struct config **cfs;
    int i, o;
    struct stat sb;
    char *inm, *ipath, *cpath;
    struct pattern *pat;
    
    cpath = sprintf2("%s/", path);
    cfs = getconfigs(cpath);
    for(i = 0; cfs[i] != NULL; i++) {
	if(cfs[i]->index != NULL) {
	    for(o = 0; cfs[i]->index[o] != NULL; o++) {
		inm = cfs[i]->index[o];
		ipath = sprintf2("%s/%s", path, inm);
		if(!stat(ipath, &sb) && S_ISREG(sb.st_mode)) {
		    handlefile(req, fd, ipath);
		    free(ipath);
		    goto out;
		}
		free(ipath);
		
		if(!strchr(inm, '.') && ((ipath = findfile(path, inm, NULL)) != NULL)) {
		    handlefile(req, fd, ipath);
		    free(ipath);
		    goto out;
		}
	    }
	    break;
	}
    }
    if((pat = findmatch(cpath, 0, 1)) != NULL) {
	handle(req, fd, cpath, pat);
	goto out;
    }
    simpleerror(fd, 403, "Not Authorized", "Will not send listings for this directory.");
    
out:
    free(cpath);
}

static int checkpath(struct hthead *req, int fd, char *path, char *rest);

static int checkentry(struct hthead *req, int fd, char *path, char *rest, char *el)
{
    struct stat sb;
    char *newpath;
    int rv;
    
    if(*el == '.') {
	handle404(req, fd, sprintf3("%s/", path));
	return(1);
    }
    if(!stat(sprintf3("%s/%s", path, el), &sb)) {
	if(S_ISDIR(sb.st_mode)) {
	    if(!*rest) {
		stdredir(req, fd, 301, sprintf3("%s/", el));
		return(1);
	    }
	    newpath = sprintf2("%s/%s", path, el);
	    rv = checkpath(req, fd, newpath, rest + 1);
	    free(newpath);
	    return(rv);
	} else if(S_ISREG(sb.st_mode)) {
	    newpath = sprintf2("%s/%s", path, el);
	    replrest(req, rest);
	    handlefile(req, fd, newpath);
	    free(newpath);
	    return(1);
	}
	handle404(req, fd, sprintf3("%s/", path));
	return(1);
    }
    if(!strchr(el, '.') && ((newpath = findfile(path, el, NULL)) != NULL)) {
	replrest(req, rest);
	handlefile(req, fd, newpath);
	free(newpath);
	return(1);
    }
    return(0);
}

static int checkdir(struct hthead *req, int fd, char *path, char *rest)
{
    char *cpath;
    struct config *cf, *ccf;
    struct child *ch;
    
    cf = getconfig(path);
    if((cf->capture != NULL) && (cf->caproot || !cf->path || strcmp(cf->path, "."))) {
	cpath = sprintf2("%s/", path);
	if((ch = findchild(cpath, cf->capture, &ccf)) == NULL) {
	    free(cpath);
	    flog(LOG_ERR, "child %s requested for capture, but was not declared", cf->capture);
	    simpleerror(fd, 500, "Configuration Error", "The server is erroneously configured. Handler %s was requested, but not declared.", cf->capture);
	    return(1);
	}
	free(cpath);
	if(*rest == '/')
	    rest++;
	replrest(req, rest);
	if(childhandle(ch, req, fd, chinit, ccf?ccf->path:NULL))
	    childerror(req, fd);
	return(1);
    }
    return(0);
}

static int checkpath(struct hthead *req, int fd, char *path, char *rest)
{
    char *p, *el;
    int rv;
    
    el = NULL;
    rv = 0;
    
    if(!strncmp(path, "./", 2))
	path += 2;
    if(checkdir(req, fd, path, rest))
	return(1);
    
    if((p = strchr(rest, '/')) == NULL) {
	el = unquoteurl(rest);
	rest = "";
    } else {
	char buf[p - rest + 1];
	memcpy(buf, rest, p - rest);
	buf[p - rest] = 0;
	el = unquoteurl(buf);
	rest = p;
    }
    if(el == NULL) {
	simpleerror(fd, 400, "Bad Request", "The requested URL contains an invalid escape sequence.");
	rv = 1;
	goto out;
    }
    if(strchr(el, '/') || (!*el && *rest)) {
	handle404(req, fd, sprintf3("%s/", path));
	rv = 1;
	goto out;
    }
    if(!*el) {
	replrest(req, rest);
	handledir(req, fd, path);
	rv = 1;
	goto out;
    }
    rv = checkentry(req, fd, path, rest, el);
    
out:
    if(el != NULL)
	free(el);
    return(rv);
}

static void serve(struct hthead *req, int fd)
{
    now = time(NULL);
    if(!checkpath(req, fd, ".", req->rest))
	handle404(req, fd, ".");
}

static void chldhandler(int sig)
{
    pid_t pid;
    int st;
    
    while((pid = waitpid(-1, &st, WNOHANG)) > 0) {
	if(WCOREDUMP(st))
	    flog(LOG_WARNING, "child process %i dumped core", pid);
    }
}

static void sighandler(int sig)
{
}

static void usage(FILE *out)
{
    fprintf(out, "usage: dirplex [-hN] [-c CONFIG] DIR\n");
}

int main(int argc, char **argv)
{
    int c;
    int nodef;
    char *gcf, *lcf, *clcf;
    struct hthead *req;
    int fd;
    
    nodef = 0;
    lcf = NULL;
    while((c = getopt(argc, argv, "hNc:")) >= 0) {
	switch(c) {
	case 'h':
	    usage(stdout);
	    exit(0);
	case 'N':
	    nodef = 1;
	    break;
	case 'c':
	    lcf = optarg;
	    break;
	default:
	    usage(stderr);
	    exit(1);
	}
    }
    if(argc - optind < 1) {
	usage(stderr);
	exit(1);
    }
    if(!nodef) {
	if((gcf = findstdconf("ashd/dirplex.rc")) != NULL) {
	    gconfig = readconfig(gcf);
	    free(gcf);
	}
    }
    if(lcf != NULL) {
	if(strchr(lcf, '/') == NULL) {
	    if((clcf = findstdconf(sprintf3("ashd/%s", lcf))) == NULL) {
		flog(LOG_ERR, "could not find requested configuration `%s'", lcf);
		exit(1);
	    }
	    if((lconfig = readconfig(clcf)) == NULL)
		exit(1);
	    free(clcf);
	} else {
	    if((lconfig = readconfig(lcf)) == NULL)
		exit(1);
	}
    }
    if(chdir(argv[optind])) {
	flog(LOG_ERR, "could not change directory to %s: %s", argv[optind], strerror(errno));
	exit(1);
    }
    signal(SIGCHLD, chldhandler);
    signal(SIGPIPE, sighandler);
    while(1) {
	if((fd = recvreq(0, &req)) < 0) {
	    if(errno != 0)
		flog(LOG_ERR, "recvreq: %s", strerror(errno));
	    break;
	}
	serve(req, fd);
	freehthead(req);
	close(fd);
    }
    return(0);
}
Commit	Line	Data
600a1ce7 FT	1	/*
	2	ashd - A Sane HTTP Daemon
	3	Copyright (C) 2008 Fredrik Tolf <fredrik@dolda2000.com>
	4
	5	This program is free software: you can redistribute it and/or modify
	6	it under the terms of the GNU General Public License as published by
	7	the Free Software Foundation, either version 3 of the License, or
	8	(at your option) any later version.
	9
	10	This program is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	GNU General Public License for more details.
	14
	15	You should have received a copy of the GNU General Public License
	16	along with this program. If not, see <http://www.gnu.org/licenses/>.
	17	*/
	18
	19	#include <stdlib.h>
	20	#include <stdio.h>
	21	#include <string.h>
	22	#include <unistd.h>
	23	#include <errno.h>
	24	#include <sys/stat.h>
	25	#include <ctype.h>
	26	#include <dirent.h>
	27	#include <time.h>
578ad6b1	28	#include <sys/wait.h>
600a1ce7 FT	29	#include <sys/signal.h>
	30
	31	#ifdef HAVE_CONFIG_H
	32	#include <config.h>
	33	#endif
	34	#include <utils.h>
	35	#include <log.h>
	36	#include <req.h>
	37	#include <proc.h>
	38	#include <resp.h>
	39	#include <cf.h>
	40
	41	#include "dirplex.h"
	42
	43	time_t now;
	44
da75c835 FT	45	static void chinit(void *idata)
	46	{
	47	char *twd = idata;
	48
	49	if(twd != NULL) {
	50	/* This should never be able to fail other than for critical
	51	* I/O errors or some such, since the path has already been
	52	* traversed. */
	53	if(chdir(twd))
	54	exit(127);
	55	}
	56	}
	57
f2f009c9 FT	58	static void childerror(struct hthead *req, int fd)
	59	{
	60	if(errno == EAGAIN)
	61	simpleerror(fd, 500, "Server Error", "The request handler is overloaded.");
	62	else
	63	simpleerror(fd, 500, "Server Error", "The request handler crashed.");
	64	}
	65
600a1ce7 FT	66	static void handle(struct hthead req, int fd, char path, struct pattern *pat)
	67	{
	68	struct child *ch;
da75c835	69	struct config *ccf;
acc2d159	70	struct headmod *head;
da75c835	71	char *twd;
600a1ce7	72
acc2d159 FT	73	for(head = pat->headers; head != NULL; head = head->next) {
	74	headrmheader(req, head->name);
	75	headappheader(req, head->name, head->value);
	76	}
2a249e82	77	if(!strncmp(path, "./", 2) && path[2])
cf6e7461	78	path += 2;
600a1ce7	79	if(pat->fchild) {
da75c835	80	headappheader(req, "X-Ash-File", path);
6a7a868e	81	stdforkserve(pat->fchild, req, fd, NULL, NULL);
600a1ce7	82	} else {
da75c835	83	if((ch = findchild(path, pat->childnm, &ccf)) == NULL) {
600a1ce7 FT	84	flog(LOG_ERR, "child %s requested, but was not declared", pat->childnm);
	85	simpleerror(fd, 500, "Configuration Error", "The server is erroneously configured. Handler %s was requested, but not declared.", pat->childnm);
	86	return;
	87	}
b70b2d4f	88	if((twd = ccf?ccf->path:NULL) != NULL) {
da75c835 FT	89	if(!strcmp(twd, ".")) {
	90	twd = NULL;
	91	} else if(strncmp(path, twd, strlen(twd)) \|\| (path[strlen(twd)] != '/')) {
	92	/* Should be an impossible case under the current (and
	93	* foreseeable) scheme. */
	94	simpleerror(fd, 500, "Server Error", "An internal server error occurred.");
	95	return;
	96	} else {
	97	path = path + strlen(twd) + 1;
	98	}
	99	}
	100	headappheader(req, "X-Ash-File", path);
	101	if(childhandle(ch, req, fd, chinit, twd))
f2f009c9	102	childerror(req, fd);
600a1ce7 FT	103	}
	104	}
	105
b70b2d4f FT	106	static void handle404(struct hthead req, int fd, char path)
	107	{
	108	struct child *ch;
	109	struct config *ccf;
	110	char *tmp;
	111
	112	tmp = sstrdup(path);
	113	ch = findchild(tmp, ".notfound", &ccf);
	114	if(childhandle(ch, req, fd, chinit, ccf?ccf->path:NULL))
f2f009c9	115	childerror(req, fd);
b70b2d4f FT	116	free(tmp);
	117	}
	118
600a1ce7 FT	119	static void handlefile(struct hthead req, int fd, char path)
	120	{
	121	struct pattern *pat;
	122
	123	if((pat = findmatch(path, 0, 0)) == NULL) {
b70b2d4f	124	handle404(req, fd, path);
600a1ce7 FT	125	return;
	126	}
	127	handle(req, fd, path, pat);
	128	}
	129
	130	static char findfile(char path, char name, struct stat sb)
	131	{
	132	DIR *dir;
	133	struct stat sbuf;
	134	struct dirent *dent;
	135	char p, fp, *ret;
	136
	137	if(sb == NULL)
	138	sb = &sbuf;
	139	if((dir = opendir(path)) == NULL)
	140	return(NULL);
	141	ret = NULL;
	142	while((dent = readdir(dir)) != NULL) {
	143	/* Ignore backup files.
	144	* XXX: There is probably a better and more extensible way to
	145	* do this. */
	146	if(dent->d_name[strlen(dent->d_name) - 1] == '~')
	147	continue;
	148	if((p = strchr(dent->d_name, '.')) == NULL)
	149	continue;
	150	if(p - dent->d_name != strlen(name))
	151	continue;
	152	if(strncmp(dent->d_name, name, strlen(name)))
	153	continue;
	154	fp = sprintf3("%s/%s", path, dent->d_name);
	155	if(stat(fp, sb))
	156	continue;
	157	if(!S_ISREG(sb->st_mode))
	158	continue;
	159	ret = sstrdup(fp);
	160	break;
	161	}
	162	closedir(dir);
	163	return(ret);
	164	}
	165
	166	static void handledir(struct hthead req, int fd, char path)
	167	{
	168	struct config **cfs;
	169	int i, o;
	170	struct stat sb;
	171	char inm, ipath, *cpath;
	172	struct pattern *pat;
	173
	174	cpath = sprintf2("%s/", path);
	175	cfs = getconfigs(cpath);
	176	for(i = 0; cfs[i] != NULL; i++) {
	177	if(cfs[i]->index != NULL) {
	178	for(o = 0; cfs[i]->index[o] != NULL; o++) {
	179	inm = cfs[i]->index[o];
	180	ipath = sprintf2("%s/%s", path, inm);
	181	if(!stat(ipath, &sb) && S_ISREG(sb.st_mode)) {
	182	handlefile(req, fd, ipath);
	183	free(ipath);
	184	goto out;
	185	}
	186	free(ipath);
	187
	188	if(!strchr(inm, '.') && ((ipath = findfile(path, inm, NULL)) != NULL)) {
189	handlefile(req, fd, ipath);
190	free(ipath);
191	goto out;
192	}
193	}
194	break;
195	}
196	}
197	if((pat = findmatch(cpath, 0, 1)) != NULL) {
198	handle(req, fd, cpath, pat);
199	goto out;
200	}
201	simpleerror(fd, 403, "Not Authorized", "Will not send listings for this directory.");
202
203	out:
204	free(cpath);
205	}
206
207	static int checkpath(struct hthead req, int fd, char path, char *rest);
208
209	static int checkentry(struct hthead req, int fd, char path, char rest, char el)
210	{
211	struct stat sb;
212	char *newpath;
213	int rv;
214
c6cb01ef	215	if(*el == '.') {
b70b2d4f	216	handle404(req, fd, sprintf3("%s/", path));
600a1ce7 FT	217	return(1);
	218	}
	219	if(!stat(sprintf3("%s/%s", path, el), &sb)) {
	220	if(S_ISDIR(sb.st_mode)) {
	221	if(!*rest) {
	222	stdredir(req, fd, 301, sprintf3("%s/", el));
	223	return(1);
	224	}
	225	newpath = sprintf2("%s/%s", path, el);
	226	rv = checkpath(req, fd, newpath, rest + 1);
	227	free(newpath);
	228	return(rv);
	229	} else if(S_ISREG(sb.st_mode)) {
	230	newpath = sprintf2("%s/%s", path, el);
	231	replrest(req, rest);
	232	handlefile(req, fd, newpath);
	233	free(newpath);
	234	return(1);
	235	}
b70b2d4f	236	handle404(req, fd, sprintf3("%s/", path));
600a1ce7 FT	237	return(1);
	238	}
	239	if(!strchr(el, '.') && ((newpath = findfile(path, el, NULL)) != NULL)) {
	240	replrest(req, rest);
	241	handlefile(req, fd, newpath);
	242	free(newpath);
	243	return(1);
	244	}
	245	return(0);
	246	}
	247
300d73d9 FT	248	static int checkdir(struct hthead req, int fd, char path, char *rest)
	249	{
	250	char *cpath;
	251	struct config cf, ccf;
	252	struct child *ch;
	253
	254	cf = getconfig(path);
54490135	255	if((cf->capture != NULL) && (cf->caproot \|\| !cf->path \|\| strcmp(cf->path, "."))) {
300d73d9 FT	256	cpath = sprintf2("%s/", path);
	257	if((ch = findchild(cpath, cf->capture, &ccf)) == NULL) {
	258	free(cpath);
	259	flog(LOG_ERR, "child %s requested for capture, but was not declared", cf->capture);
	260	simpleerror(fd, 500, "Configuration Error", "The server is erroneously configured. Handler %s was requested, but not declared.", cf->capture);
	261	return(1);
	262	}
	263	free(cpath);
	264	if(*rest == '/')
	265	rest++;
	266	replrest(req, rest);
b70b2d4f	267	if(childhandle(ch, req, fd, chinit, ccf?ccf->path:NULL))
f2f009c9	268	childerror(req, fd);
300d73d9 FT	269	return(1);
	270	}
	271	return(0);
	272	}
	273
600a1ce7 FT	274	static int checkpath(struct hthead req, int fd, char path, char *rest)
600a1ce7 FT	275	{
600a1ce7 FT	276	char p, el;
	277	int rv;
	278
	279	el = NULL;
	280	rv = 0;
	281
	282	if(!strncmp(path, "./", 2))
	283	path += 2;
300d73d9 FT	284	if(checkdir(req, fd, path, rest))
300d73d9 FT	285	return(1);
600a1ce7 FT	286
	287	if((p = strchr(rest, '/')) == NULL) {
	288	el = unquoteurl(rest);
	289	rest = "";
	290	} else {
	291	char buf[p - rest + 1];
	292	memcpy(buf, rest, p - rest);
	293	buf[p - rest] = 0;
	294	el = unquoteurl(buf);
	295	rest = p;
	296	}
	297	if(el == NULL) {
	298	simpleerror(fd, 400, "Bad Request", "The requested URL contains an invalid escape sequence.");
	299	rv = 1;
	300	goto out;
	301	}
	302	if(strchr(el, '/') \|\| (!el && rest)) {
b70b2d4f	303	handle404(req, fd, sprintf3("%s/", path));
600a1ce7 FT	304	rv = 1;
	305	goto out;
	306	}
	307	if(!*el) {
	308	replrest(req, rest);
	309	handledir(req, fd, path);
240d9bcd FT	310	rv = 1;
240d9bcd FT	311	goto out;
600a1ce7 FT	312	}
	313	rv = checkentry(req, fd, path, rest, el);
	314
	315	out:
	316	if(el != NULL)
	317	free(el);
	318	return(rv);
	319	}
	320
	321	static void serve(struct hthead *req, int fd)
	322	{
	323	now = time(NULL);
	324	if(!checkpath(req, fd, ".", req->rest))
b70b2d4f	325	handle404(req, fd, ".");
600a1ce7 FT	326	}
600a1ce7 FT	327
578ad6b1 FT	328	static void chldhandler(int sig)
	329	{
	330	pid_t pid;
3d6044ab	331	int st;
578ad6b1	332
3d6044ab FT	333	while((pid = waitpid(-1, &st, WNOHANG)) > 0) {
	334	if(WCOREDUMP(st))
	335	flog(LOG_WARNING, "child process %i dumped core", pid);
	336	}
578ad6b1 FT	337	}
578ad6b1 FT	338
fd735432 FT	339	static void sighandler(int sig)
	340	{
	341	}
	342
600a1ce7 FT	343	static void usage(FILE *out)
	344	{
	345	fprintf(out, "usage: dirplex [-hN] [-c CONFIG] DIR\n");
	346	}
	347
	348	int main(int argc, char **argv)
	349	{
	350	int c;
	351	int nodef;
	352	char gcf, lcf, *clcf;
	353	struct hthead *req;
	354	int fd;
	355
	356	nodef = 0;
	357	lcf = NULL;
	358	while((c = getopt(argc, argv, "hNc:")) >= 0) {
	359	switch(c) {
	360	case 'h':
	361	usage(stdout);
	362	exit(0);
	363	case 'N':
	364	nodef = 1;
	365	break;
	366	case 'c':
	367	lcf = optarg;
	368	break;
	369	default:
	370	usage(stderr);
	371	exit(1);
	372	}
	373	}
	374	if(argc - optind < 1) {
	375	usage(stderr);
	376	exit(1);
	377	}
	378	if(!nodef) {
	379	if((gcf = findstdconf("ashd/dirplex.rc")) != NULL) {
	380	gconfig = readconfig(gcf);
	381	free(gcf);
	382	}
	383	}
	384	if(lcf != NULL) {
	385	if(strchr(lcf, '/') == NULL) {
	386	if((clcf = findstdconf(sprintf3("ashd/%s", lcf))) == NULL) {
	387	flog(LOG_ERR, "could not find requested configuration `%s'", lcf);
	388	exit(1);
	389	}
	390	if((lconfig = readconfig(clcf)) == NULL)
	391	exit(1);
	392	free(clcf);
	393	} else {
	394	if((lconfig = readconfig(lcf)) == NULL)
	395	exit(1);
	396	}
	397	}
	398	if(chdir(argv[optind])) {
	399	flog(LOG_ERR, "could not change directory to %s: %s", argv[optind], strerror(errno));
	400	exit(1);
	401	}
578ad6b1	402	signal(SIGCHLD, chldhandler);
fd735432	403	signal(SIGPIPE, sighandler);
600a1ce7 FT	404	while(1) {
	405	if((fd = recvreq(0, &req)) < 0) {
	406	if(errno != 0)
	407	flog(LOG_ERR, "recvreq: %s", strerror(errno));
	408	break;
	409	}
	410	serve(req, fd);
	411	freehthead(req);
	412	close(fd);
	413	}
	414	return(0);
	415	}