/*
* uhttpd - Tiny single-threaded httpd
*
- * Copyright (C) 2010-2012 Jo-Philipp Wich <xm@subsignal.org>
- * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
+ * Copyright (C) 2010-2013 Jo-Philipp Wich <xm@subsignal.org>
+ * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
*
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
*
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#define _BSD_SOURCE
+#define _DARWIN_C_SOURCE
#define _XOPEN_SOURCE 700
#include <sys/types.h>
#include <sys/dir.h>
#include <time.h>
#include <strings.h>
+#include <dirent.h>
#include <libubox/blobmsg.h>
#include "uhttpd.h"
#include "mimetypes.h"
-static char _tag[128];
static LIST_HEAD(index_files);
static LIST_HEAD(dispatch_handlers);
+static LIST_HEAD(pending_requests);
+static int n_requests;
+
+struct deferred_request {
+ struct list_head list;
+ struct dispatch_handler *d;
+ struct client *cl;
+ struct path_info pi;
+ bool called, path;
+};
struct index_file {
struct list_head list;
};
enum file_hdr {
+ HDR_AUTHORIZATION,
HDR_IF_MODIFIED_SINCE,
HDR_IF_UNMODIFIED_SINCE,
HDR_IF_MATCH,
exists = !!canonpath(uh_buf, path_phys);
uh_buf[i] = ch;
+ if (!exists)
+ continue;
+
+ /* test current path */
+ if (stat(path_phys, &p.stat))
+ continue;
+
snprintf(path_info, sizeof(path_info), "%s", uh_buf + i);
break;
}
path_phys[docroot_len] != '/'))
return NULL;
- /* test current path */
- if (stat(path_phys, &p.stat))
- return NULL;
-
/* is a regular file */
if (p.stat.st_mode & S_IFREG) {
p.root = docroot;
url with trailing slash appended */
if (!slash) {
uh_http_header(cl, 302, "Found");
+ ustream_printf(cl->us, "Content-Length: 0\r\n");
ustream_printf(cl->us, "Location: %s%s%s\r\n\r\n",
&path_phys[docroot_len],
p.query ? "?" : "",
continue;
strcpy(pathptr, idx->name);
- if (!stat(path_phys, &s) && (s.st_mode & S_IFREG))
+ if (!stat(path_phys, &s) && (s.st_mode & S_IFREG)) {
+ memcpy(&p.stat, &s, sizeof(p.stat));
break;
+ }
*pathptr = 0;
}
return p.phys ? &p : NULL;
}
-#ifdef __APPLE__
-time_t timegm (struct tm *tm);
-#endif
-
static const char * uh_file_mime_lookup(const char *path)
{
- struct mimetype *m = &uh_mime_types[0];
+ const struct mimetype *m = &uh_mime_types[0];
const char *e;
while (m->extn) {
return "application/octet-stream";
}
-static const char * uh_file_mktag(struct stat *s)
+static const char * uh_file_mktag(struct stat *s, char *buf, int len)
{
- snprintf(_tag, sizeof(_tag), "\"%x-%x-%x\"",
+ snprintf(buf, len, "\"%x-%x-%x\"",
(unsigned int) s->st_ino,
(unsigned int) s->st_size,
(unsigned int) s->st_mtime);
- return _tag;
+ return buf;
}
static time_t uh_file_date2unix(const char *date)
return 0;
}
-static char * uh_file_unix2date(time_t ts)
+static char * uh_file_unix2date(time_t ts, char *buf, int len)
{
struct tm *t = gmtime(&ts);
- strftime(_tag, sizeof(_tag), "%a, %d %b %Y %H:%M:%S GMT", t);
+ strftime(buf, len, "%a, %d %b %Y %H:%M:%S GMT", t);
- return _tag;
+ return buf;
}
static char *uh_file_header(struct client *cl, int idx)
static void uh_file_response_ok_hdrs(struct client *cl, struct stat *s)
{
+ char buf[128];
+
if (s) {
- ustream_printf(cl->us, "ETag: %s\r\n", uh_file_mktag(s));
+ ustream_printf(cl->us, "ETag: %s\r\n", uh_file_mktag(s, buf, sizeof(buf)));
ustream_printf(cl->us, "Last-Modified: %s\r\n",
- uh_file_unix2date(s->st_mtime));
+ uh_file_unix2date(s->st_mtime, buf, sizeof(buf)));
}
- ustream_printf(cl->us, "Date: %s\r\n", uh_file_unix2date(time(NULL)));
+ ustream_printf(cl->us, "Date: %s\r\n",
+ uh_file_unix2date(time(NULL), buf, sizeof(buf)));
}
static void uh_file_response_200(struct client *cl, struct stat *s)
static bool uh_file_if_match(struct client *cl, struct stat *s)
{
- const char *tag = uh_file_mktag(s);
+ char buf[128];
+ const char *tag = uh_file_mktag(s, buf, sizeof(buf));
char *hdr = uh_file_header(cl, HDR_IF_MATCH);
char *p;
int i;
static int uh_file_if_none_match(struct client *cl, struct stat *s)
{
- const char *tag = uh_file_mktag(s);
+ char buf[128];
+ const char *tag = uh_file_mktag(s, buf, sizeof(buf));
char *hdr = uh_file_header(cl, HDR_IF_NONE_MATCH);
char *p;
int i;
return true;
}
+static int dirent_cmp(const struct dirent **a, const struct dirent **b)
+{
+ bool dir_a = !!((*a)->d_type & DT_DIR);
+ bool dir_b = !!((*b)->d_type & DT_DIR);
+
+ /* directories first */
+ if (dir_a != dir_b)
+ return dir_b - dir_a;
+
+ return alphasort(a, b);
+}
-static int uh_file_scandir_filter_dir(const struct dirent *e)
+static void list_entries(struct client *cl, struct dirent **files, int count,
+ const char *path, char *local_path)
{
- return strcmp(e->d_name, ".") ? 1 : 0;
+ const char *suffix = "/";
+ const char *type = "directory";
+ unsigned int mode = S_IXOTH;
+ struct stat s;
+ char *file;
+ char buf[128];
+ int i;
+
+ file = local_path + strlen(local_path);
+ for (i = 0; i < count; i++) {
+ const char *name = files[i]->d_name;
+ bool dir = !!(files[i]->d_type & DT_DIR);
+
+ if (name[0] == '.' && name[1] == 0)
+ continue;
+
+ sprintf(file, "%s", name);
+ if (stat(local_path, &s))
+ continue;
+
+ if (!dir) {
+ suffix = "";
+ mode = S_IROTH;
+ type = uh_file_mime_lookup(local_path);
+ }
+
+ if (!(s.st_mode & mode))
+ continue;
+
+ uh_chunk_printf(cl,
+ "<li><strong><a href='%s%s%s'>%s</a>%s"
+ "</strong><br /><small>modified: %s"
+ "<br />%s - %.02f kbyte<br />"
+ "<br /></small></li>",
+ path, name, suffix,
+ name, suffix,
+ uh_file_unix2date(s.st_mtime, buf, sizeof(buf)),
+ type, s.st_size / 1024.0);
+
+ *file = 0;
+ free(files[i]);
+ }
}
static void uh_file_dirlist(struct client *cl, struct path_info *pi)
{
- int i;
- int count = 0;
- char filename[PATH_MAX];
- char *pathptr;
struct dirent **files = NULL;
- struct stat s;
+ int count = 0;
uh_file_response_200(cl, NULL);
ustream_printf(cl->us, "Content-Type: text/html\r\n\r\n");
"<body><h1>Index of %s</h1><hr /><ol>",
pi->name, pi->name);
- if ((count = scandir(pi->phys, &files, uh_file_scandir_filter_dir,
- alphasort)) > 0)
- {
- memset(filename, 0, sizeof(filename));
- memcpy(filename, pi->phys, sizeof(filename));
- pathptr = &filename[strlen(filename)];
-
- /* list subdirs */
- for (i = 0; i < count; i++) {
- strncat(filename, files[i]->d_name,
- sizeof(filename) - strlen(files[i]->d_name));
-
- if (!stat(filename, &s) &&
- (s.st_mode & S_IFDIR) && (s.st_mode & S_IXOTH))
- uh_chunk_printf(cl,
- "<li><strong><a href='%s%s/'>%s</a>/"
- "</strong><br /><small>modified: %s"
- "<br />directory - %.02f kbyte<br />"
- "<br /></small></li>",
- pi->name, files[i]->d_name,
- files[i]->d_name,
- uh_file_unix2date(s.st_mtime),
- s.st_size / 1024.0);
-
- *pathptr = 0;
- }
-
- /* list files */
- for (i = 0; i < count; i++) {
- strncat(filename, files[i]->d_name,
- sizeof(filename) - strlen(files[i]->d_name));
-
- if (!stat(filename, &s) &&
- !(s.st_mode & S_IFDIR) && (s.st_mode & S_IROTH))
- uh_chunk_printf(cl,
- "<li><strong><a href='%s%s'>%s</a>"
- "</strong><br /><small>modified: %s"
- "<br />%s - %.02f kbyte<br />"
- "<br /></small></li>",
- pi->name, files[i]->d_name,
- files[i]->d_name,
- uh_file_unix2date(s.st_mtime),
- uh_file_mime_lookup(filename),
- s.st_size / 1024.0);
-
- *pathptr = 0;
- }
+ count = scandir(pi->phys, &files, NULL, dirent_cmp);
+ if (count > 0) {
+ strcpy(uh_buf, pi->phys);
+ list_entries(cl, files, count, pi->name, uh_buf);
}
+ free(files);
uh_chunk_printf(cl, "</ol><hr /></body></html>");
uh_request_done(cl);
-
- if (files)
- {
- for (i = 0; i < count; i++)
- free(files[i]);
-
- free(files);
- }
}
static void file_write_cb(struct client *cl)
!uh_file_if_range(cl, &pi->stat) ||
!uh_file_if_unmodified_since(cl, &pi->stat) ||
!uh_file_if_none_match(cl, &pi->stat)) {
+ ustream_printf(cl->us, "Content-Length: 0\r\n");
+ ustream_printf(cl->us, "\r\n");
uh_request_done(cl);
close(fd);
return;
file_write_cb(cl);
}
-static void uh_file_request(struct client *cl, const char *url, struct path_info *pi)
+static void uh_file_request(struct client *cl, const char *url,
+ struct path_info *pi, struct blob_attr **tb)
{
- static const struct blobmsg_policy hdr_policy[__HDR_MAX] = {
- [HDR_IF_MODIFIED_SINCE] = { "if-modified-since", BLOBMSG_TYPE_STRING },
- [HDR_IF_UNMODIFIED_SINCE] = { "if-unmodified-since", BLOBMSG_TYPE_STRING },
- [HDR_IF_MATCH] = { "if-match", BLOBMSG_TYPE_STRING },
- [HDR_IF_NONE_MATCH] = { "if-none-match", BLOBMSG_TYPE_STRING },
- [HDR_IF_RANGE] = { "if-range", BLOBMSG_TYPE_STRING },
- };
- struct blob_attr *tb[__HDR_MAX];
int fd;
- blobmsg_parse(hdr_policy, __HDR_MAX, tb, blob_data(cl->hdr.head), blob_len(cl->hdr.head));
-
- cl->dispatch.file.hdr = tb;
-
if (!(pi->stat.st_mode & S_IROTH))
goto error;
if (fd < 0)
goto error;
+ cl->dispatch.file.hdr = tb;
uh_file_data(cl, pi, fd);
- } else if ((pi->stat.st_mode & S_IFDIR)) {
+ cl->dispatch.file.hdr = NULL;
+ return;
+ }
+
+ if ((pi->stat.st_mode & S_IFDIR)) {
if (conf.no_dirlists)
goto error;
uh_file_dirlist(cl, pi);
- } else {
- goto error;
+ return;
}
- cl->dispatch.file.hdr = NULL;
- return;
-
error:
uh_client_error(cl, 403, "Forbidden",
"You don't have permission to access %s on this server.",
url);
- cl->dispatch.file.hdr = NULL;
}
void uh_dispatch_add(struct dispatch_handler *d)
return NULL;
}
-static bool __handle_file_request(struct client *cl, const char *url)
+static void
+uh_invoke_script(struct client *cl, struct dispatch_handler *d, struct path_info *pi)
+{
+ char *url = blobmsg_data(blob_data(cl->hdr.head));
+
+ n_requests++;
+ d->handle_request(cl, url, pi);
+}
+
+static void uh_complete_request(struct client *cl)
+{
+ struct deferred_request *dr;
+
+ n_requests--;
+
+ while (!list_empty(&pending_requests)) {
+ if (n_requests >= conf.max_script_requests)
+ return;
+
+ dr = list_first_entry(&pending_requests, struct deferred_request, list);
+ list_del(&dr->list);
+
+ dr->called = true;
+ uh_invoke_script(dr->cl, dr->d, dr->path ? &dr->pi : NULL);
+ }
+}
+
+
+static void
+uh_free_pending_request(struct client *cl)
+{
+ struct deferred_request *dr = cl->dispatch.req_data;
+
+ if (dr->called)
+ uh_complete_request(cl);
+ else
+ list_del(&dr->list);
+ free(dr);
+}
+
+static int field_len(const char *ptr)
{
+ if (!ptr)
+ return 0;
+
+ return strlen(ptr) + 1;
+}
+
+#define path_info_fields \
+ _field(root) \
+ _field(phys) \
+ _field(name) \
+ _field(info) \
+ _field(query) \
+ _field(auth)
+
+static void
+uh_defer_script(struct client *cl, struct dispatch_handler *d, struct path_info *pi)
+{
+ struct deferred_request *dr;
+ char *_root, *_phys, *_name, *_info, *_query, *_auth;
+
+ cl->dispatch.req_free = uh_free_pending_request;
+
+ if (pi) {
+ /* allocate enough memory to duplicate all path_info strings in one block */
+#undef _field
+#define _field(_name) &_##_name, field_len(pi->_name),
+ dr = calloc_a(sizeof(*dr), path_info_fields NULL);
+
+ memcpy(&dr->pi, pi, sizeof(*pi));
+ dr->path = true;
+
+ /* copy all path_info strings */
+#undef _field
+#define _field(_name) if (pi->_name) dr->pi._name = strcpy(_##_name, pi->_name);
+ path_info_fields
+ } else {
+ dr = calloc(1, sizeof(*dr));
+ }
+
+ cl->dispatch.req_data = dr;
+ dr->cl = cl;
+ dr->d = d;
+ list_add(&dr->list, &pending_requests);
+}
+
+static void
+uh_invoke_handler(struct client *cl, struct dispatch_handler *d, char *url, struct path_info *pi)
+{
+ if (!d->script)
+ return d->handle_request(cl, url, pi);
+
+ if (n_requests >= conf.max_script_requests)
+ return uh_defer_script(cl, d, pi);
+
+ cl->dispatch.req_free = uh_complete_request;
+ uh_invoke_script(cl, d, pi);
+}
+
+static bool __handle_file_request(struct client *cl, char *url)
+{
+ static const struct blobmsg_policy hdr_policy[__HDR_MAX] = {
+ [HDR_AUTHORIZATION] = { "authorization", BLOBMSG_TYPE_STRING },
+ [HDR_IF_MODIFIED_SINCE] = { "if-modified-since", BLOBMSG_TYPE_STRING },
+ [HDR_IF_UNMODIFIED_SINCE] = { "if-unmodified-since", BLOBMSG_TYPE_STRING },
+ [HDR_IF_MATCH] = { "if-match", BLOBMSG_TYPE_STRING },
+ [HDR_IF_NONE_MATCH] = { "if-none-match", BLOBMSG_TYPE_STRING },
+ [HDR_IF_RANGE] = { "if-range", BLOBMSG_TYPE_STRING },
+ };
struct dispatch_handler *d;
+ struct blob_attr *tb[__HDR_MAX];
struct path_info *pi;
pi = uh_path_lookup(cl, url);
if (pi->redirected)
return true;
+ blobmsg_parse(hdr_policy, __HDR_MAX, tb, blob_data(cl->hdr.head), blob_len(cl->hdr.head));
+ if (tb[HDR_AUTHORIZATION])
+ pi->auth = blobmsg_data(tb[HDR_AUTHORIZATION]);
+
+ if (!uh_auth_check(cl, pi))
+ return true;
+
d = dispatch_find(url, pi);
if (d)
- d->handle_request(cl, url, pi);
+ uh_invoke_handler(cl, d, url, pi);
else
- uh_file_request(cl, url, pi);
+ uh_file_request(cl, url, pi, tb);
return true;
}
void uh_handle_request(struct client *cl)
{
+ struct http_request *req = &cl->request;
struct dispatch_handler *d;
- const char *url = cl->request.url;
+ char *url = blobmsg_data(blob_data(cl->hdr.head));
+ char *error_handler;
+ req->redirect_status = 200;
d = dispatch_find(url, NULL);
- if (d) {
- d->handle_request(cl, url, NULL);
- return;
- }
+ if (d)
+ return uh_invoke_handler(cl, d, url, NULL);
- if (__handle_file_request(cl, url) ||
- __handle_file_request(cl, conf.error_handler))
+ if (__handle_file_request(cl, url))
return;
- uh_client_error(cl, 404, "Not Found", "The requested URL %s was not found on this server.", cl->request.url);
+ req->redirect_status = 404;
+ if (conf.error_handler) {
+ error_handler = alloca(strlen(conf.error_handler) + 1);
+ strcpy(error_handler, conf.error_handler);
+ if (__handle_file_request(cl, error_handler))
+ return;
+ }
+
+ uh_client_error(cl, 404, "Not Found", "The requested URL %s was not found on this server.", url);
}
projects / project / uhttpd.git / blobdiff