--- /dev/null
+/*
+ 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 "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;
+
+ for(rule = pat->rules; *rule; rule++)
+ freerule(*rule);
+ 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);
+ 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;
+ 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], "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], "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], "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;
+ 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) {
+ if(stat(fn, &sb) || (sb.st_mtime != cf->mtime)) {
+ freeconfig(cf);
+ break;
+ }
+ }
+ cf->lastck = now;
+ return(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;
+ }
+ 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);
+ 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)
+{
+ int i;
+ struct config **cfs;
+ struct child *ch;
+
+ cfs = getconfigs(file);
+ for(i = 0; cfs[i] != NULL; i++) {
+ if((ch = getchild(cfs[i], name)) != NULL)
+ break;
+ }
+ return(ch);
+}
+
+struct pattern *findmatch(char *file, int trydefault, int dir)
+{
+ int i, o, c;
+ char *bn;
+ struct config **cfs;
+ struct pattern *pat;
+ struct rule *rule;
+
+ 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;
+ }
+ }
+ if(!rule)
+ return(pat);
+ }
+ }
+ if(!trydefault)
+ return(findmatch(file, 1, dir));
+ return(NULL);
+}
Dolda2000 GitWeb / ashd.git / blobdiff