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authorJo-Philipp Wich <jow@openwrt.org>2010-08-11 23:44:30 +0000
committerJo-Philipp Wich <jow@openwrt.org>2010-08-11 23:44:30 +0000
commit2d175dcdcefdd236336c834fb842ab132ee66d0d (patch)
tree7e201e521c0f1c5eb8a7ffc7c4f4f28f166c05d3 /package/uhttpd/src/uhttpd-file.c
parentb36a1274bb97647bd5d457a8f35e54ab8d4d2f14 (diff)
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uhttpd: - abort file serving if client connection is lost (#7742) - don't send bad request headers twice
SVN-Revision: 22602
Diffstat (limited to 'package/uhttpd/src/uhttpd-file.c')
-rw-r--r--package/uhttpd/src/uhttpd-file.c85
1 files changed, 49 insertions, 36 deletions
diff --git a/package/uhttpd/src/uhttpd-file.c b/package/uhttpd/src/uhttpd-file.c
index 850a14175c..ef9a77b6cc 100644
--- a/package/uhttpd/src/uhttpd-file.c
+++ b/package/uhttpd/src/uhttpd-file.c
@@ -97,36 +97,39 @@ static char * uh_file_header_lookup(struct http_request *req, const char *name)
return NULL;
}
+#define ensure_ret(x) \
+ do { if( x < 0 ) return; } while(0)
+
static void uh_file_response_ok_hdrs(struct client *cl, struct http_request *req, struct stat *s)
{
- uh_http_sendf(cl, NULL, "Connection: close\r\n");
+ ensure_ret(uh_http_sendf(cl, NULL, "Connection: close\r\n"));
if( s )
{
- uh_http_sendf(cl, NULL, "ETag: %s\r\n", uh_file_mktag(s));
- uh_http_sendf(cl, NULL, "Last-Modified: %s\r\n", uh_file_unix2date(s->st_mtime));
+ ensure_ret(uh_http_sendf(cl, NULL, "ETag: %s\r\n", uh_file_mktag(s)));
+ ensure_ret(uh_http_sendf(cl, NULL, "Last-Modified: %s\r\n", uh_file_unix2date(s->st_mtime)));
}
- uh_http_sendf(cl, NULL, "Date: %s\r\n", uh_file_unix2date(time(NULL)));
+ ensure_ret(uh_http_sendf(cl, NULL, "Date: %s\r\n", uh_file_unix2date(time(NULL))));
}
static void uh_file_response_200(struct client *cl, struct http_request *req, struct stat *s)
{
- uh_http_sendf(cl, NULL, "HTTP/%.1f 200 OK\r\n", req->version);
+ ensure_ret(uh_http_sendf(cl, NULL, "HTTP/%.1f 200 OK\r\n", req->version));
uh_file_response_ok_hdrs(cl, req, s);
}
static void uh_file_response_304(struct client *cl, struct http_request *req, struct stat *s)
{
- uh_http_sendf(cl, NULL, "HTTP/%.1f 304 Not Modified\r\n", req->version);
+ ensure_ret(uh_http_sendf(cl, NULL, "HTTP/%.1f 304 Not Modified\r\n", req->version));
uh_file_response_ok_hdrs(cl, req, s);
}
static void uh_file_response_412(struct client *cl, struct http_request *req)
{
- uh_http_sendf(cl, NULL,
+ ensure_ret(uh_http_sendf(cl, NULL,
"HTTP/%.1f 412 Precondition Failed\r\n"
- "Connection: close\r\n", req->version);
+ "Connection: close\r\n", req->version));
}
static int uh_file_if_match(struct client *cl, struct http_request *req, struct stat *s)
@@ -244,6 +247,9 @@ static int uh_file_if_unmodified_since(struct client *cl, struct http_request *r
}
+#define ensure_out(x) \
+ do { if( x < 0 ) goto out; } while(0)
+
static int uh_file_scandir_filter_dir(const struct dirent *e)
{
return strcmp(e->d_name, ".") ? 1 : 0;
@@ -251,17 +257,18 @@ static int uh_file_scandir_filter_dir(const struct dirent *e)
static void uh_file_dirlist(struct client *cl, struct http_request *req, struct path_info *pi)
{
- int i, count;
+ int i;
+ int count = 0;
char filename[PATH_MAX];
char *pathptr;
struct dirent **files = NULL;
struct stat s;
- uh_http_sendf(cl, req,
+ ensure_out(uh_http_sendf(cl, req,
"<html><head><title>Index of %s</title></head>"
"<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 )
{
@@ -278,13 +285,13 @@ static void uh_file_dirlist(struct client *cl, struct http_request *req, struct
if( !stat(filename, &s) &&
(s.st_mode & S_IFDIR) && (s.st_mode & S_IXOTH)
)
- uh_http_sendf(cl, req,
+ ensure_out(uh_http_sendf(cl, req,
"<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;
}
@@ -298,30 +305,37 @@ static void uh_file_dirlist(struct client *cl, struct http_request *req, struct
if( !stat(filename, &s) &&
!(s.st_mode & S_IFDIR) && (s.st_mode & S_IROTH)
)
- uh_http_sendf(cl, req,
+ ensure_out(uh_http_sendf(cl, req,
"<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;
- free(files[i]);
}
}
- free(files);
+ ensure_out(uh_http_sendf(cl, req, "</ol><hr /></body></html>"));
+ ensure_out(uh_http_sendf(cl, req, ""));
+
+out:
+ if( files )
+ {
+ for( i = 0; i < count; i++ )
+ free(files[i]);
- uh_http_sendf(cl, req, "</ol><hr /></body></html>");
- uh_http_sendf(cl, req, "");
+ free(files);
+ }
}
void uh_file_request(struct client *cl, struct http_request *req, struct path_info *pi)
{
- int fd, rlen;
+ int rlen;
+ int fd = -1;
char buf[UH_LIMIT_MSGHEAD];
/* we have a file */
@@ -338,38 +352,33 @@ void uh_file_request(struct client *cl, struct http_request *req, struct path_in
/* write status */
uh_file_response_200(cl, req, &pi->stat);
- uh_http_sendf(cl, NULL, "Content-Type: %s\r\n", uh_file_mime_lookup(pi->name));
- uh_http_sendf(cl, NULL, "Content-Length: %i\r\n", pi->stat.st_size);
+ ensure_out(uh_http_sendf(cl, NULL, "Content-Type: %s\r\n", uh_file_mime_lookup(pi->name)));
+ ensure_out(uh_http_sendf(cl, NULL, "Content-Length: %i\r\n", pi->stat.st_size));
/* if request was HTTP 1.1 we'll respond chunked */
if( (req->version > 1.0) && (req->method != UH_HTTP_MSG_HEAD) )
- uh_http_send(cl, NULL, "Transfer-Encoding: chunked\r\n", -1);
+ ensure_out(uh_http_send(cl, NULL, "Transfer-Encoding: chunked\r\n", -1));
/* close header */
- uh_http_send(cl, NULL, "\r\n", -1);
+ ensure_out(uh_http_send(cl, NULL, "\r\n", -1));
/* send body */
if( req->method != UH_HTTP_MSG_HEAD )
{
/* pump file data */
while( (rlen = read(fd, buf, sizeof(buf))) > 0 )
- {
- if( uh_http_send(cl, req, buf, rlen) < 0 )
- break;
- }
+ ensure_out(uh_http_send(cl, req, buf, rlen));
/* send trailer in chunked mode */
- uh_http_send(cl, req, "", 0);
+ ensure_out(uh_http_send(cl, req, "", 0));
}
}
/* one of the preconditions failed, terminate opened header and exit */
else
{
- uh_http_send(cl, NULL, "\r\n", -1);
+ ensure_out(uh_http_send(cl, NULL, "\r\n", -1));
}
-
- close(fd);
}
/* directory */
@@ -379,9 +388,9 @@ void uh_file_request(struct client *cl, struct http_request *req, struct path_in
uh_file_response_200(cl, req, NULL);
if( req->version > 1.0 )
- uh_http_send(cl, NULL, "Transfer-Encoding: chunked\r\n", -1);
+ ensure_out(uh_http_send(cl, NULL, "Transfer-Encoding: chunked\r\n", -1));
- uh_http_send(cl, NULL, "Content-Type: text/html\r\n\r\n", -1);
+ ensure_out(uh_http_send(cl, NULL, "Content-Type: text/html\r\n\r\n", -1));
/* content */
uh_file_dirlist(cl, req, pi);
@@ -390,8 +399,12 @@ void uh_file_request(struct client *cl, struct http_request *req, struct path_in
/* 403 */
else
{
- uh_http_sendhf(cl, 403, "Forbidden",
- "Access to this resource is forbidden");
+ ensure_out(uh_http_sendhf(cl, 403, "Forbidden",
+ "Access to this resource is forbidden"));
}
+
+out:
+ if( fd > -1 )
+ close(fd);
}
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