2 ashd - A Sane HTTP Daemon
3 Copyright (C) 2008 Fredrik Tolf <fredrik@dolda2000.com>
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.
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.
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/>.
28 #include <sys/signal.h>
44 static void handle(struct hthead *req, int fd, char *path, struct pattern *pat)
48 headappheader(req, "X-Ash-File", path);
50 stdforkserve(pat->fchild, req, fd);
52 if((ch = findchild(path, pat->childnm)) == NULL) {
53 flog(LOG_ERR, "child %s requested, but was not declared", pat->childnm);
54 simpleerror(fd, 500, "Configuration Error", "The server is erroneously configured. Handler %s was requested, but not declared.", pat->childnm);
57 if(childhandle(ch, req, fd))
58 simpleerror(fd, 500, "Server Error", "The request handler crashed.");
62 static void handlefile(struct hthead *req, int fd, char *path)
66 if((pat = findmatch(path, 0, 0)) == NULL) {
67 simpleerror(fd, 404, "Not Found", "The requested URL has no corresponding resource.");
70 handle(req, fd, path, pat);
73 static char *findfile(char *path, char *name, struct stat *sb)
82 if((dir = opendir(path)) == NULL)
85 while((dent = readdir(dir)) != NULL) {
86 /* Ignore backup files.
87 * XXX: There is probably a better and more extensible way to
89 if(dent->d_name[strlen(dent->d_name) - 1] == '~')
91 if((p = strchr(dent->d_name, '.')) == NULL)
93 if(p - dent->d_name != strlen(name))
95 if(strncmp(dent->d_name, name, strlen(name)))
97 fp = sprintf3("%s/%s", path, dent->d_name);
100 if(!S_ISREG(sb->st_mode))
109 static void handledir(struct hthead *req, int fd, char *path)
114 char *inm, *ipath, *cpath;
117 cpath = sprintf2("%s/", path);
118 cfs = getconfigs(cpath);
119 for(i = 0; cfs[i] != NULL; i++) {
120 if(cfs[i]->index != NULL) {
121 for(o = 0; cfs[i]->index[o] != NULL; o++) {
122 inm = cfs[i]->index[o];
123 ipath = sprintf2("%s/%s", path, inm);
124 if(!stat(ipath, &sb) && S_ISREG(sb.st_mode)) {
125 handlefile(req, fd, ipath);
131 if(!strchr(inm, '.') && ((ipath = findfile(path, inm, NULL)) != NULL)) {
132 handlefile(req, fd, ipath);
140 if((pat = findmatch(cpath, 0, 1)) != NULL) {
141 handle(req, fd, cpath, pat);
144 simpleerror(fd, 403, "Not Authorized", "Will not send listings for this directory.");
150 static int checkpath(struct hthead *req, int fd, char *path, char *rest);
152 static int checkentry(struct hthead *req, int fd, char *path, char *rest, char *el)
159 simpleerror(fd, 404, "Not Found", "The requested URL has no corresponding resource.");
162 if(!stat(sprintf3("%s/%s", path, el), &sb)) {
163 if(S_ISDIR(sb.st_mode)) {
165 stdredir(req, fd, 301, sprintf3("%s/", el));
168 newpath = sprintf2("%s/%s", path, el);
169 rv = checkpath(req, fd, newpath, rest + 1);
172 } else if(S_ISREG(sb.st_mode)) {
173 newpath = sprintf2("%s/%s", path, el);
175 handlefile(req, fd, newpath);
179 simpleerror(fd, 404, "Not Found", "The requested URL has no corresponding resource.");
182 if(!strchr(el, '.') && ((newpath = findfile(path, el, NULL)) != NULL)) {
184 handlefile(req, fd, newpath);
191 static int checkpath(struct hthead *req, int fd, char *path, char *rest)
200 if(!strncmp(path, "./", 2))
202 cf = getconfig(path);
204 if((p = strchr(rest, '/')) == NULL) {
205 el = unquoteurl(rest);
208 char buf[p - rest + 1];
209 memcpy(buf, rest, p - rest);
211 el = unquoteurl(buf);
215 simpleerror(fd, 400, "Bad Request", "The requested URL contains an invalid escape sequence.");
219 if(strchr(el, '/') || (!*el && *rest)) {
220 simpleerror(fd, 404, "Not Found", "The requested URL has no corresponding resource.");
226 handledir(req, fd, path);
229 rv = checkentry(req, fd, path, rest, el);
237 static void serve(struct hthead *req, int fd)
240 if(!checkpath(req, fd, ".", req->rest))
241 simpleerror(fd, 404, "Not Found", "The requested URL has no corresponding resource.");
244 static void usage(FILE *out)
246 fprintf(out, "usage: dirplex [-hN] [-c CONFIG] DIR\n");
249 int main(int argc, char **argv)
253 char *gcf, *lcf, *clcf;
259 while((c = getopt(argc, argv, "hNc:")) >= 0) {
275 if(argc - optind < 1) {
280 if((gcf = findstdconf("ashd/dirplex.rc")) != NULL) {
281 gconfig = readconfig(gcf);
286 if(strchr(lcf, '/') == NULL) {
287 if((clcf = findstdconf(sprintf3("ashd/%s", lcf))) == NULL) {
288 flog(LOG_ERR, "could not find requested configuration `%s'", lcf);
291 if((lconfig = readconfig(clcf)) == NULL)
295 if((lconfig = readconfig(lcf)) == NULL)
299 if(chdir(argv[optind])) {
300 flog(LOG_ERR, "could not change directory to %s: %s", argv[optind], strerror(errno));
303 signal(SIGCHLD, SIG_IGN);
305 if((fd = recvreq(0, &req)) < 0) {
307 flog(LOG_ERR, "recvreq: %s", strerror(errno));