--- /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 <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <ctype.h>
+#include <dirent.h>
+#include <time.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 handle(struct hthead *req, int fd, char *path, struct pattern *pat)
+{
+ struct child *ch;
+
+ headappheader(req, "X-Ash-File", path);
+ if(pat->fchild) {
+ stdforkserve(pat->fchild, req, fd);
+ } else {
+ if((ch = findchild(path, pat->childnm)) == 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(childhandle(ch, req, fd))
+ simpleerror(fd, 500, "Server Error", "The request handler crashed.");
+ }
+}
+
+static void handlefile(struct hthead *req, int fd, char *path)
+{
+ struct pattern *pat;
+
+ if((pat = findmatch(path, 0, 0)) == NULL) {
+ simpleerror(fd, 404, "Not Found", "The requested URL has no corresponding resource.");
+ 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 == '.') {
+ simpleerror(fd, 404, "Not Found", "The requested URL has no corresponding resource.");
+ 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);
+ }
+ simpleerror(fd, 404, "Not Found", "The requested URL has no corresponding resource.");
+ 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 checkpath(struct hthead *req, int fd, char *path, char *rest)
+{
+ struct config *cf;
+ char *p, *el;
+ int rv;
+
+ el = NULL;
+ rv = 0;
+
+ if(!strncmp(path, "./", 2))
+ path += 2;
+ cf = getconfig(path);
+
+ 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)) {
+ simpleerror(fd, 404, "Not Found", "The requested URL has no corresponding resource.");
+ rv = 1;
+ goto out;
+ }
+ if(!*el) {
+ replrest(req, rest);
+ handledir(req, fd, path);
+ return(1);
+ }
+ 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))
+ simpleerror(fd, 404, "Not Found", "The requested URL has no corresponding resource.");
+}
+
+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, SIG_IGN);
+ 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);
+}
Dolda2000 GitWeb / ashd.git / blobdiff