[ashd.git] / src / dirplex / conf.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 <unistd.h>
#include <string.h>
#include <errno.h>
#include <fnmatch.h>
#include <sys/stat.h>

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

#include "dirplex.h"

static struct config *cflist;
struct config *gconfig, *lconfig;

static void freerule(struct rule *rule)
{
    freeca(rule->patterns);
    free(rule);
}

static void freepattern(struct pattern *pat)
{
    struct rule **rule;
    struct headmod *head;
    
    for(rule = pat->rules; *rule; rule++)
	freerule(*rule);
    while((head = pat->headers) != NULL) {
	pat->headers = head->next;
	free(head->name);
	free(head->value);
	free(head);
    }
    if(pat->childnm != NULL)
	free(pat->childnm);
    freeca(pat->fchild);
    free(pat);
}

static void freeconfig(struct config *cf)
{
    struct child *ch, *nch;
    struct pattern *pat, *npat;
    
    if(cf->prev != NULL)
	cf->prev->next = cf->next;
    if(cf->next != NULL)
	cf->next->prev = cf->prev;
    if(cf == cflist)
	cflist = cf->next;
    if(cf->path != NULL)
	free(cf->path);
    for(ch = cf->children; ch != NULL; ch = nch) {
	nch = ch->next;
	freechild(ch);
    }
    for(pat = cf->patterns; pat != NULL; pat = npat) {
	npat = pat->next;
	freepattern(pat);
    }
    freeca(cf->index);
    if(cf->capture != NULL)
	free(cf->capture);
    free(cf);
}

struct child *getchild(struct config *cf, char *name)
{
    struct child *ch;
    
    for(ch = cf->children; ch; ch = ch->next) {
	if(!strcmp(ch->name, name))
	    break;
    }
    return(ch);
}

static struct rule *newrule(struct pattern *pat)
{
    int i;
    struct rule *rule;
    
    for(i = 0; pat->rules[i]; i++);
    pat->rules = srealloc(pat->rules, sizeof(*pat->rules) * (i + 2));
    rule = pat->rules[i] = szmalloc(sizeof(*rule));
    pat->rules[i + 1] = NULL;
    return(rule);
}

static struct pattern *newpattern(void)
{
    struct pattern *pat;
    
    omalloc(pat);
    pat->rules = szmalloc(sizeof(*pat->rules));
    return(pat);
}

static char **cadup(char **w)
{
    char **ret;
    int i, l;
    
    l = calen(w);
    ret = smalloc(sizeof(*ret) * (l + 1));
    for(i = 0; i < l; i++)
	ret[i] = sstrdup(w[i]);
    ret[i] = NULL;
    return(ret);
}

static struct pattern *parsepattern(struct cfstate *s)
{
    struct pattern *pat;
    struct rule *rule;
    struct headmod *head;
    int sl;

    if(!strcmp(s->argv[0], "match")) {
	s->expstart = 1;
	pat = newpattern();
    } else {
	return(NULL);
    }
    
    if((s->argc > 1) && !strcmp(s->argv[1], "directory"))
	pat->type = PT_DIR;
    sl = s->lno;
    while(1) {
	getcfline(s);
	if(!strcmp(s->argv[0], "filename")) {
	    if(s->argc < 2) {
		flog(LOG_WARNING, "%s:%i: missing pattern for `filename' match", s->file, s->lno);
		continue;
	    }
	    rule = newrule(pat);
	    rule->type = PAT_BASENAME;
	    rule->patterns = cadup(s->argv + 1);
	} else if(!strcmp(s->argv[0], "pathname")) {
	    if(s->argc < 2) {
		flog(LOG_WARNING, "%s:%i: missing pattern for `pathname' match", s->file, s->lno);
		continue;
	    }
	    rule = newrule(pat);
	    rule->type = PAT_PATHNAME;
	    rule->patterns = cadup(s->argv + 1);
	} else if(!strcmp(s->argv[0], "all")) {
	    newrule(pat)->type = PAT_ALL;
	} else if(!strcmp(s->argv[0], "default")) {
	    newrule(pat)->type = PAT_DEFAULT;
	} else if(!strcmp(s->argv[0], "local")) {
	    newrule(pat)->type = PAT_LOCAL;
	} else if(!strcmp(s->argv[0], "handler")) {
	    if(s->argc < 2) {
		flog(LOG_WARNING, "%s:%i: missing child name for `handler' directive", s->file, s->lno);
		continue;
	    }
	    if(pat->childnm != NULL)
		free(pat->childnm);
	    pat->childnm = sstrdup(s->argv[1]);
	} else if(!strcmp(s->argv[0], "fork")) {
	    pat->fchild = cadup(s->argv + 1);
	} else if(!strcmp(s->argv[0], "set") || !strcmp(s->argv[0], "xset")) {
	    if(s->argc < 3) {
		flog(LOG_WARNING, "%s:%i: missing header name or pattern for `%s' directive", s->file, s->lno, s->argv[0]);
		continue;
	    }
	    omalloc(head);
	    if(!strcmp(s->argv[0], "xset"))
		head->name = sprintf2("X-Ash-%s", s->argv[1]);
	    else
		head->name = sstrdup(s->argv[1]);
	    head->value = sstrdup(s->argv[2]);
	    head->next = pat->headers;
	    pat->headers = head;
	} else if(!strcmp(s->argv[0], "end") || !strcmp(s->argv[0], "eof")) {
	    break;
	} else {
	    flog(LOG_WARNING, "%s:%i: unknown directive `%s' in pattern declaration", s->file, s->lno, s->argv[0]);
	}
    }
    
    if(pat->rules[0] == NULL) {
	flog(LOG_WARNING, "%s:%i: missing rules in match declaration", s->file, sl);
	freepattern(pat);
	return(NULL);
    }
    if((pat->childnm == NULL) && (pat->fchild == NULL)) {
	flog(LOG_WARNING, "%s:%i: missing handler in match declaration", s->file, sl);
	freepattern(pat);
	return(NULL);
    }
    return(pat);
}

static struct config *emptyconfig(void)
{
    struct config *cf;
    
    omalloc(cf);
    return(cf);
}

struct config *readconfig(char *file)
{
    struct cfstate *s;
    FILE *in;
    struct config *cf;
    struct child *child;
    struct pattern *pat;
    
    if((in = fopen(file, "r")) == NULL) {
	flog(LOG_WARNING, "%s: %s", file, strerror(errno));
	return(NULL);
    }
    s = mkcfparser(in, file);
    cf = emptyconfig();
    
    while(1) {
	getcfline(s);
	if((child = parsechild(s)) != NULL) {
	    child->next = cf->children;
	    cf->children = child;
	} else if((pat = parsepattern(s)) != NULL) {
	    pat->next = cf->patterns;
	    cf->patterns = pat;
	} else if(!strcmp(s->argv[0], "index-file")) {
	    freeca(cf->index);
	    cf->index = NULL;
	    if(s->argc > 1)
		cf->index = cadup(s->argv + 1);
	} else if(!strcmp(s->argv[0], "capture")) {
	    if(s->argc < 2) {
		flog(LOG_WARNING, "%s:%i: missing argument to capture declaration", s->file, s->lno);
		continue;
	    }
	    if(cf->capture != NULL)
		free(cf->capture);
	    cf->capture = sstrdup(s->argv[1]);
	} else if(!strcmp(s->argv[0], "eof")) {
	    break;
	} else {
	    flog(LOG_WARNING, "%s:%i: unknown directive `%s'", s->file, s->lno, s->argv[0]);
	}
    }
    
    freecfparser(s);
    fclose(in);
    return(cf);
}

struct config *getconfig(char *path)
{
    struct config *cf, *ocf;
    struct stat sb;
    char *fn;
    time_t mtime;
    
    fn = sprintf3("%s/.htrc", path);
    for(cf = cflist; cf != NULL; cf = cf->next) {
	if(!strcmp(cf->path, path)) {
	    if(now - cf->lastck > 5) {
		cf->lastck = now;
		if(stat(fn, &sb) || (sb.st_mtime != cf->mtime))
		    break;
	    }
	    return(cf);
	}
    }
    ocf = cf;
    if(access(fn, R_OK) || stat(fn, &sb)) {
	cf = emptyconfig();
	mtime = 0;
    } else {
	if((cf = readconfig(fn)) == NULL)
	    return(NULL);
	mtime = sb.st_mtime;
    }
    if(ocf != NULL) {
	mergechildren(cf->children, ocf->children);
	freeconfig(ocf);
    }
    cf->path = sstrdup(path);
    cf->mtime = mtime;
    cf->lastck = now;
    cf->next = cflist;
    cf->prev = NULL;
    if(cflist != NULL)
	cflist->prev = cf;
    cflist = cf;
    return(cf);
}

struct config **getconfigs(char *file)
{
    static struct config **ret = NULL;
    struct {
	struct config **b;
	size_t s, d;
    } buf;
    struct config *cf;
    char *tmp, *p;
    
    if(ret != NULL)
	free(ret);
    bufinit(buf);
    if(!strncmp(file, "./", 2))
	file += 2;
    tmp = sstrdup(file);
    while(1) {
	if((p = strrchr(tmp, '/')) == NULL)
	    break;
	*p = 0;
	if((cf = getconfig(tmp)) != NULL)
	    bufadd(buf, cf);
    }
    free(tmp);
    if((cf = getconfig(".")) != NULL)
	bufadd(buf, cf);
    if(lconfig != NULL)
	bufadd(buf, lconfig);
    if(gconfig != NULL)
	bufadd(buf, gconfig);
    bufadd(buf, NULL);
    return(ret = buf.b);
}

struct child *findchild(char *file, char *name, struct config **cf)
{
    int i;
    struct config **cfs;
    struct child *ch;
    
    if(cf != NULL)
	*cf = NULL;
    cfs = getconfigs(file);
    for(i = 0; cfs[i] != NULL; i++) {
	if((ch = getchild(cfs[i], name)) != NULL) {
	    if(cf != NULL)
		*cf = cfs[i];
	    return(ch);
	}
    }
    if(!strcmp(name, ".notfound"))
	return(notfound);
    return(NULL);
}

struct pattern *findmatch(char *file, int trydefault, int dir)
{
    int i, o, c;
    char *bn;
    struct config **cfs;
    struct pattern *pat;
    struct rule *rule;
    size_t pl;
    
    if((bn = strrchr(file, '/')) != NULL)
	bn++;
    else
	bn = file;
    cfs = getconfigs(file);
    for(c = 0; cfs[c] != NULL; c++) {
	for(pat = cfs[c]->patterns; pat != NULL; pat = pat->next) {
	    if(!dir && (pat->type == PT_DIR))
		continue;
	    if(dir && (pat->type != PT_DIR))
		continue;
	    for(i = 0; (rule = pat->rules[i]) != NULL; i++) {
		if(rule->type == PAT_BASENAME) {
		    for(o = 0; rule->patterns[o] != NULL; o++) {
			if(!fnmatch(rule->patterns[o], bn, 0))
			    break;
		    }
		    if(rule->patterns[o] == NULL)
			break;
		} else if(rule->type == PAT_PATHNAME) {
		    for(o = 0; rule->patterns[o] != NULL; o++) {
			if(!fnmatch(rule->patterns[o], file, FNM_PATHNAME))
			    break;
		    }
		    if(rule->patterns[o] == NULL)
			break;
		} else if(rule->type == PAT_ALL) {
		} else if(rule->type == PAT_DEFAULT) {
		    if(!trydefault)
			break;
		} else if(rule->type == PAT_LOCAL) {
		    if(cfs[c]->path == NULL)
			break;
		    pl = strlen(cfs[c]->path);
		    if(!((strlen(file) > pl) && !strncmp(file, cfs[c]->path, pl) && (file[pl] == '/') && !strchr(file + pl + 1, '/')))
			break;
		}
	    }
	    if(!rule)
		return(pat);
	}
    }
    if(!trydefault)
	return(findmatch(file, 1, dir));
    return(NULL);
}

static int donotfound(struct child *ch, struct hthead *req, int fd, void (*chinit)(void *), void *idata)
{
    simpleerror(fd, 404, "Not Found", "The requested URL has no corresponding resource.");
    return(0);
}

static struct chandler i_notfound = {
    .handle = donotfound,
};

static struct child s_notfound = {
    .name = ".notfound",
    .iface = &i_notfound,
};
struct child *notfound = &s_notfound;
Commit	Line	Data
992ce9ef 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>
992ce9ef	21	#include <unistd.h>
600a1ce7	22	#include <string.h>
992ce9ef	23	#include <errno.h>
992ce9ef	24	#include <fnmatch.h>
600a1ce7	25	#include <sys/stat.h>
992ce9ef FT	26
	27	#ifdef HAVE_CONFIG_H
	28	#include <config.h>
	29	#endif
	30	#include <utils.h>
992ce9ef	31	#include <log.h>
06c1a718	32	#include <cf.h>
b70b2d4f	33	#include <resp.h>
992ce9ef	34
600a1ce7	35	#include "dirplex.h"
992ce9ef	36
0fc6fd13	37	static struct config *cflist;
600a1ce7	38	struct config gconfig, lconfig;
992ce9ef	39
1eba4f97 FT	40	static void freerule(struct rule *rule)
	41	{
	42	freeca(rule->patterns);
	43	free(rule);
	44	}
	45
992ce9ef FT	46	static void freepattern(struct pattern *pat)
	47	{
	48	struct rule **rule;
acc2d159	49	struct headmod *head;
992ce9ef	50
1eba4f97 FT	51	for(rule = pat->rules; *rule; rule++)
1eba4f97 FT	52	freerule(*rule);
acc2d159 FT	53	while((head = pat->headers) != NULL) {
	54	pat->headers = head->next;
	55	free(head->name);
	56	free(head->value);
	57	free(head);
	58	}
992ce9ef FT	59	if(pat->childnm != NULL)
992ce9ef FT	60	free(pat->childnm);
624f637d	61	freeca(pat->fchild);
992ce9ef FT	62	free(pat);
	63	}
	64
	65	static void freeconfig(struct config *cf)
	66	{
	67	struct child ch, nch;
	68	struct pattern pat, npat;
	69
	70	if(cf->prev != NULL)
	71	cf->prev->next = cf->next;
	72	if(cf->next != NULL)
	73	cf->next->prev = cf->prev;
	74	if(cf == cflist)
	75	cflist = cf->next;
0fc6fd13 FT	76	if(cf->path != NULL)
0fc6fd13 FT	77	free(cf->path);
992ce9ef FT	78	for(ch = cf->children; ch != NULL; ch = nch) {
	79	nch = ch->next;
	80	freechild(ch);
	81	}
	82	for(pat = cf->patterns; pat != NULL; pat = npat) {
	83	npat = pat->next;
	84	freepattern(pat);
	85	}
6373daf9	86	freeca(cf->index);
300d73d9 FT	87	if(cf->capture != NULL)
300d73d9 FT	88	free(cf->capture);
992ce9ef FT	89	free(cf);
	90	}
	91
600a1ce7	92	struct child getchild(struct config cf, char *name)
992ce9ef FT	93	{
	94	struct child *ch;
	95
	96	for(ch = cf->children; ch; ch = ch->next) {
	97	if(!strcmp(ch->name, name))
	98	break;
	99	}
	100	return(ch);
	101	}
	102
	103	static struct rule newrule(struct pattern pat)
	104	{
	105	int i;
	106	struct rule *rule;
	107
	108	for(i = 0; pat->rules[i]; i++);
	109	pat->rules = srealloc(pat->rules, sizeof(pat->rules) (i + 2));
cceb3611	110	rule = pat->rules[i] = szmalloc(sizeof(*rule));
992ce9ef FT	111	pat->rules[i + 1] = NULL;
	112	return(rule);
	113	}
	114
	115	static struct pattern *newpattern(void)
	116	{
	117	struct pattern *pat;
	118
	119	omalloc(pat);
	120	pat->rules = szmalloc(sizeof(*pat->rules));
	121	return(pat);
	122	}
	123
1eba4f97 FT	124	static char cadup(char w)
	125	{
	126	char **ret;
	127	int i, l;
	128
	129	l = calen(w);
	130	ret = smalloc(sizeof(ret) (l + 1));
	131	for(i = 0; i < l; i++)
	132	ret[i] = sstrdup(w[i]);
	133	ret[i] = NULL;
	134	return(ret);
	135	}
	136
06c1a718 FT	137	static struct pattern parsepattern(struct cfstate s)
	138	{
	139	struct pattern *pat;
	140	struct rule *rule;
acc2d159	141	struct headmod *head;
1eba4f97	142	int sl;
06c1a718 FT	143
	144	if(!strcmp(s->argv[0], "match")) {
	145	s->expstart = 1;
	146	pat = newpattern();
	147	} else {
	148	return(NULL);
	149	}
	150
8232cebe FT	151	if((s->argc > 1) && !strcmp(s->argv[1], "directory"))
8232cebe FT	152	pat->type = PT_DIR;
06c1a718 FT	153	sl = s->lno;
	154	while(1) {
	155	getcfline(s);
	156	if(!strcmp(s->argv[0], "filename")) {
	157	if(s->argc < 2) {
	158	flog(LOG_WARNING, "%s:%i: missing pattern for `filename' match", s->file, s->lno);
	159	continue;
	160	}
	161	rule = newrule(pat);
	162	rule->type = PAT_BASENAME;
1eba4f97	163	rule->patterns = cadup(s->argv + 1);
06c1a718 FT	164	} else if(!strcmp(s->argv[0], "pathname")) {
	165	if(s->argc < 2) {
	166	flog(LOG_WARNING, "%s:%i: missing pattern for `pathname' match", s->file, s->lno);
	167	continue;
	168	}
	169	rule = newrule(pat);
	170	rule->type = PAT_PATHNAME;
1eba4f97	171	rule->patterns = cadup(s->argv + 1);
06c1a718 FT	172	} else if(!strcmp(s->argv[0], "all")) {
	173	newrule(pat)->type = PAT_ALL;
	174	} else if(!strcmp(s->argv[0], "default")) {
	175	newrule(pat)->type = PAT_DEFAULT;
7711283c FT	176	} else if(!strcmp(s->argv[0], "local")) {
7711283c FT	177	newrule(pat)->type = PAT_LOCAL;
06c1a718 FT	178	} else if(!strcmp(s->argv[0], "handler")) {
	179	if(s->argc < 2) {
	180	flog(LOG_WARNING, "%s:%i: missing child name for `handler' directive", s->file, s->lno);
	181	continue;
	182	}
	183	if(pat->childnm != NULL)
	184	free(pat->childnm);
	185	pat->childnm = sstrdup(s->argv[1]);
624f637d	186	} else if(!strcmp(s->argv[0], "fork")) {
1eba4f97	187	pat->fchild = cadup(s->argv + 1);
8cc893f5	188	} else if(!strcmp(s->argv[0], "set") \|\| !strcmp(s->argv[0], "xset")) {
acc2d159	189	if(s->argc < 3) {
8cc893f5	190	flog(LOG_WARNING, "%s:%i: missing header name or pattern for `%s' directive", s->file, s->lno, s->argv[0]);
acc2d159 FT	191	continue;
	192	}
	193	omalloc(head);
8cc893f5 FT	194	if(!strcmp(s->argv[0], "xset"))
	195	head->name = sprintf2("X-Ash-%s", s->argv[1]);
	196	else
	197	head->name = sstrdup(s->argv[1]);
acc2d159 FT	198	head->value = sstrdup(s->argv[2]);
	199	head->next = pat->headers;
	200	pat->headers = head;
06c1a718 FT	201	} else if(!strcmp(s->argv[0], "end") \|\| !strcmp(s->argv[0], "eof")) {
	202	break;
	203	} else {
	204	flog(LOG_WARNING, "%s:%i: unknown directive `%s' in pattern declaration", s->file, s->lno, s->argv[0]);
	205	}
	206	}
	207
	208	if(pat->rules[0] == NULL) {
	209	flog(LOG_WARNING, "%s:%i: missing rules in match declaration", s->file, sl);
	210	freepattern(pat);
	211	return(NULL);
	212	}
624f637d	213	if((pat->childnm == NULL) && (pat->fchild == NULL)) {
06c1a718 FT	214	flog(LOG_WARNING, "%s:%i: missing handler in match declaration", s->file, sl);
	215	freepattern(pat);
	216	return(NULL);
	217	}
	218	return(pat);
	219	}
	220
17e55136 FT	221	static struct config *emptyconfig(void)
	222	{
	223	struct config *cf;
	224
	225	omalloc(cf);
	226	return(cf);
	227	}
	228
600a1ce7	229	struct config readconfig(char file)
992ce9ef	230	{
06c1a718 FT	231	struct cfstate *s;
06c1a718 FT	232	FILE *in;
992ce9ef	233	struct config *cf;
992ce9ef FT	234	struct child *child;
992ce9ef FT	235	struct pattern *pat;
992ce9ef	236
17e55136 FT	237	if((in = fopen(file, "r")) == NULL) {
17e55136 FT	238	flog(LOG_WARNING, "%s: %s", file, strerror(errno));
992ce9ef	239	return(NULL);
06c1a718	240	}
17e55136 FT	241	s = mkcfparser(in, file);
17e55136 FT	242	cf = emptyconfig();
06c1a718 FT	243
	244	while(1) {
	245	getcfline(s);
	246	if((child = parsechild(s)) != NULL) {
	247	child->next = cf->children;
	248	cf->children = child;
	249	} else if((pat = parsepattern(s)) != NULL) {
	250	pat->next = cf->patterns;
	251	cf->patterns = pat;
6373daf9 FT	252	} else if(!strcmp(s->argv[0], "index-file")) {
	253	freeca(cf->index);
	254	cf->index = NULL;
	255	if(s->argc > 1)
	256	cf->index = cadup(s->argv + 1);
300d73d9 FT	257	} else if(!strcmp(s->argv[0], "capture")) {
	258	if(s->argc < 2) {
	259	flog(LOG_WARNING, "%s:%i: missing argument to capture declaration", s->file, s->lno);
	260	continue;
	261	}
	262	if(cf->capture != NULL)
	263	free(cf->capture);
	264	cf->capture = sstrdup(s->argv[1]);
06c1a718 FT	265	} else if(!strcmp(s->argv[0], "eof")) {
	266	break;
	267	} else {
	268	flog(LOG_WARNING, "%s:%i: unknown directive `%s'", s->file, s->lno, s->argv[0]);
992ce9ef	269	}
06c1a718	270	}
992ce9ef	271
06c1a718 FT	272	freecfparser(s);
06c1a718 FT	273	fclose(in);
992ce9ef FT	274	return(cf);
	275	}
	276
600a1ce7	277	struct config getconfig(char path)
992ce9ef	278	{
a756e349	279	struct config cf, ocf;
992ce9ef	280	struct stat sb;
17e55136 FT	281	char *fn;
17e55136 FT	282	time_t mtime;
992ce9ef	283
17e55136	284	fn = sprintf3("%s/.htrc", path);
992ce9ef FT	285	for(cf = cflist; cf != NULL; cf = cf->next) {
992ce9ef FT	286	if(!strcmp(cf->path, path)) {
17e55136	287	if(now - cf->lastck > 5) {
0fb57c32	288	cf->lastck = now;
a756e349	289	if(stat(fn, &sb) \|\| (sb.st_mtime != cf->mtime))
17e55136	290	break;
992ce9ef FT	291	}
	292	return(cf);
	293	}
	294	}
a756e349	295	ocf = cf;
17e55136 FT	296	if(access(fn, R_OK) \|\| stat(fn, &sb)) {
	297	cf = emptyconfig();
	298	mtime = 0;
	299	} else {
	300	if((cf = readconfig(fn)) == NULL)
	301	return(NULL);
	302	mtime = sb.st_mtime;
992ce9ef	303	}
a756e349	304	if(ocf != NULL) {
1924fe8c	305	mergechildren(cf->children, ocf->children);
a756e349 FT	306	freeconfig(ocf);
a756e349 FT	307	}
17e55136 FT	308	cf->path = sstrdup(path);
	309	cf->mtime = mtime;
	310	cf->lastck = now;
	311	cf->next = cflist;
d245c327 FT	312	cf->prev = NULL;
	313	if(cflist != NULL)
	314	cflist->prev = cf;
17e55136	315	cflist = cf;
992ce9ef FT	316	return(cf);
	317	}
	318
600a1ce7	319	struct config *getconfigs(char file)
992ce9ef	320	{
8dce6d19 FT	321	static struct config **ret = NULL;
	322	struct {
	323	struct config **b;
	324	size_t s, d;
	325	} buf;
992ce9ef	326	struct config *cf;
8dce6d19 FT	327	char tmp, p;
	328
	329	if(ret != NULL)
	330	free(ret);
	331	bufinit(buf);
7db7f678 FT	332	if(!strncmp(file, "./", 2))
7db7f678 FT	333	file += 2;
8dce6d19	334	tmp = sstrdup(file);
992ce9ef	335	while(1) {
8dce6d19	336	if((p = strrchr(tmp, '/')) == NULL)
992ce9ef	337	break;
8dce6d19 FT	338	*p = 0;
	339	if((cf = getconfig(tmp)) != NULL)
	340	bufadd(buf, cf);
	341	}
	342	free(tmp);
	343	if((cf = getconfig(".")) != NULL)
	344	bufadd(buf, cf);
0fc6fd13 FT	345	if(lconfig != NULL)
	346	bufadd(buf, lconfig);
	347	if(gconfig != NULL)
	348	bufadd(buf, gconfig);
8dce6d19 FT	349	bufadd(buf, NULL);
	350	return(ret = buf.b);
	351	}
	352
da75c835	353	struct child findchild(char file, char name, struct config *cf)
8dce6d19 FT	354	{
	355	int i;
	356	struct config **cfs;
	357	struct child *ch;
	358
b70b2d4f FT	359	if(cf != NULL)
b70b2d4f FT	360	*cf = NULL;
8dce6d19 FT	361	cfs = getconfigs(file);
8dce6d19 FT	362	for(i = 0; cfs[i] != NULL; i++) {
da75c835 FT	363	if((ch = getchild(cfs[i], name)) != NULL) {
	364	if(cf != NULL)
	365	*cf = cfs[i];
	366	return(ch);
	367	}
992ce9ef	368	}
b70b2d4f FT	369	if(!strcmp(name, ".notfound"))
b70b2d4f FT	370	return(notfound);
da75c835	371	return(NULL);
992ce9ef FT	372	}
992ce9ef FT	373
600a1ce7	374	struct pattern findmatch(char file, int trydefault, int dir)
992ce9ef	375	{
1eba4f97	376	int i, o, c;
8dce6d19 FT	377	char *bn;
8dce6d19 FT	378	struct config **cfs;
992ce9ef FT	379	struct pattern *pat;
992ce9ef FT	380	struct rule *rule;
7711283c	381	size_t pl;
992ce9ef FT	382
	383	if((bn = strrchr(file, '/')) != NULL)
	384	bn++;
	385	else
	386	bn = file;
8dce6d19 FT	387	cfs = getconfigs(file);
	388	for(c = 0; cfs[c] != NULL; c++) {
	389	for(pat = cfs[c]->patterns; pat != NULL; pat = pat->next) {
8232cebe FT	390	if(!dir && (pat->type == PT_DIR))
	391	continue;
	392	if(dir && (pat->type != PT_DIR))
	393	continue;
992ce9ef FT	394	for(i = 0; (rule = pat->rules[i]) != NULL; i++) {
992ce9ef FT	395	if(rule->type == PAT_BASENAME) {
1eba4f97 FT	396	for(o = 0; rule->patterns[o] != NULL; o++) {
	397	if(!fnmatch(rule->patterns[o], bn, 0))
	398	break;
	399	}
	400	if(rule->patterns[o] == NULL)
992ce9ef FT	401	break;
992ce9ef FT	402	} else if(rule->type == PAT_PATHNAME) {
1eba4f97 FT	403	for(o = 0; rule->patterns[o] != NULL; o++) {
	404	if(!fnmatch(rule->patterns[o], file, FNM_PATHNAME))
	405	break;
	406	}
	407	if(rule->patterns[o] == NULL)
992ce9ef FT	408	break;
	409	} else if(rule->type == PAT_ALL) {
	410	} else if(rule->type == PAT_DEFAULT) {
	411	if(!trydefault)
	412	break;
7711283c FT	413	} else if(rule->type == PAT_LOCAL) {
	414	if(cfs[c]->path == NULL)
	415	break;
	416	pl = strlen(cfs[c]->path);
	417	if(!((strlen(file) > pl) && !strncmp(file, cfs[c]->path, pl) && (file[pl] == '/') && !strchr(file + pl + 1, '/')))
	418	break;
992ce9ef FT	419	}
	420	}
	421	if(!rule)
8dce6d19	422	return(pat);
992ce9ef FT	423	}
992ce9ef FT	424	}
8232cebe FT	425	if(!trydefault)
8232cebe FT	426	return(findmatch(file, 1, dir));
8dce6d19	427	return(NULL);
992ce9ef	428	}
b70b2d4f FT	429
	430	static int donotfound(struct child ch, struct hthead req, int fd, void (chinit)(void ), void *idata)
	431	{
	432	simpleerror(fd, 404, "Not Found", "The requested URL has no corresponding resource.");
	433	return(0);
	434	}
	435
	436	static struct chandler i_notfound = {
	437	.handle = donotfound,
	438	};
	439
	440	static struct child s_notfound = {
	441	.name = ".notfound",
	442	.iface = &i_notfound,
	443	};
	444	struct child *notfound = &s_notfound;