modernize backfire 10.03 so it can be operational again

[openwrt-10.03/.git] / package / uhttpd / src / uhttpd-file.c

diff --git a/package/uhttpd/src/uhttpd-file.c b/package/uhttpd/src/uhttpd-file.c
index ef9a77b6cce4f4f5ed21bbe23842a03880758341..816a69124ed47d1e214152aedfff5ac05a777fb5 100644 (file)
--- a/package/uhttpd/src/uhttpd-file.c
+++ b/package/uhttpd/src/uhttpd-file.c
@@ -1,7 +1,7 @@
 /*
  * uhttpd - Tiny single-threaded httpd - Static file handler
  *
- *   Copyright (C) 2010 Jo-Philipp Wich <xm@subsignal.org>
+ *   Copyright (C) 2010-2011 Jo-Philipp Wich <xm@subsignal.org>
  *
  *  Licensed under the Apache License, Version 2.0 (the "License");
  *  you may not use this file except in compliance with the License.
@@ -37,7 +37,7 @@ static const char * uh_file_mime_lookup(const char *path)
 
                while( e >= path )
                {
-                       if( (*e == '.') && !strcasecmp(&e[1], m->extn) )
+                       if( (*e == '.' || *e == '/') && !strcasecmp(&e[1], m->extn) )
                                return m->mime;
 
                        e--;
@@ -97,10 +97,8 @@ 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)
+static int uh_file_response_ok_hdrs(struct client *cl, struct http_request *req, struct stat *s)
 {
        ensure_ret(uh_http_sendf(cl, NULL, "Connection: close\r\n"));
 
@@ -110,29 +108,29 @@ static void uh_file_response_ok_hdrs(struct client *cl, struct http_request *req
                ensure_ret(uh_http_sendf(cl, NULL, "Last-Modified: %s\r\n", uh_file_unix2date(s->st_mtime)));
        }
 
-       ensure_ret(uh_http_sendf(cl, NULL, "Date: %s\r\n", uh_file_unix2date(time(NULL))));
+       return 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)
+static int uh_file_response_200(struct client *cl, struct http_request *req, struct stat *s)
 {
        ensure_ret(uh_http_sendf(cl, NULL, "HTTP/%.1f 200 OK\r\n", req->version));
-       uh_file_response_ok_hdrs(cl, req, s);
+       return uh_file_response_ok_hdrs(cl, req, s);
 }
 
-static void uh_file_response_304(struct client *cl, struct http_request *req, struct stat *s)
+static int uh_file_response_304(struct client *cl, struct http_request *req, struct stat *s)
 {
        ensure_ret(uh_http_sendf(cl, NULL, "HTTP/%.1f 304 Not Modified\r\n", req->version));
-       uh_file_response_ok_hdrs(cl, req, s);
+       return uh_file_response_ok_hdrs(cl, req, s);
 }
 
-static void uh_file_response_412(struct client *cl, struct http_request *req)
+static int uh_file_response_412(struct client *cl, struct http_request *req)
 {
-       ensure_ret(uh_http_sendf(cl, NULL,
+       return 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)
+static int uh_file_if_match(struct client *cl, struct http_request *req, struct stat *s, int *ok)
 {
        const char *tag = uh_file_mktag(s);
        char *hdr = uh_file_header_lookup(req, "If-Match");
@@ -152,43 +150,44 @@ static int uh_file_if_match(struct client *cl, struct http_request *req, struct
                        }
                        else if( !strcmp(p, "*") || !strcmp(p, tag) )
                        {
-                               return 1;
+                               *ok = 1;
+                               return *ok;
                        }
                }
 
-               uh_file_response_412(cl, req);
-               return 0;
+               *ok = 0;
+               ensure_ret(uh_file_response_412(cl, req));
+               return *ok;
        }
 
-       return 1;
+       *ok = 1;
+       return *ok;
 }
 
-static int uh_file_if_modified_since(struct client *cl, struct http_request *req, struct stat *s)
+static int uh_file_if_modified_since(struct client *cl, struct http_request *req, struct stat *s, int *ok)
 {
        char *hdr = uh_file_header_lookup(req, "If-Modified-Since");
+       *ok = 1;
 
        if( hdr )
        {
-               if( uh_file_date2unix(hdr) < s->st_mtime )
+               if( uh_file_date2unix(hdr) >= s->st_mtime )
                {
-                       return 1;
-               }
-               else
-               {
-                       uh_file_response_304(cl, req, s);
-                       return 0;
+                       *ok = 0;
+                       ensure_ret(uh_file_response_304(cl, req, s));
                }
        }
 
-       return 1;
+       return *ok;
 }
 
-static int uh_file_if_none_match(struct client *cl, struct http_request *req, struct stat *s)
+static int uh_file_if_none_match(struct client *cl, struct http_request *req, struct stat *s, int *ok)
 {
        const char *tag = uh_file_mktag(s);
        char *hdr = uh_file_header_lookup(req, "If-None-Match");
        char *p;
        int i;
+       *ok = 1;
 
        if( hdr )
        {
@@ -203,53 +202,54 @@ static int uh_file_if_none_match(struct client *cl, struct http_request *req, st
                        }
                        else if( !strcmp(p, "*") || !strcmp(p, tag) )
                        {
+                               *ok = 0;
+
                                if( (req->method == UH_HTTP_MSG_GET) ||
                                    (req->method == UH_HTTP_MSG_HEAD) )
-                                       uh_file_response_304(cl, req, s);
+                                       ensure_ret(uh_file_response_304(cl, req, s));
                                else
-                                       uh_file_response_412(cl, req);
+                                       ensure_ret(uh_file_response_412(cl, req));
 
-                               return 0;
+                               break;
                        }
                }
        }
 
-       return 1;
+       return *ok;
 }
 
-static int uh_file_if_range(struct client *cl, struct http_request *req, struct stat *s)
+static int uh_file_if_range(struct client *cl, struct http_request *req, struct stat *s, int *ok)
 {
        char *hdr = uh_file_header_lookup(req, "If-Range");
+       *ok = 1;
 
        if( hdr )
        {
-               uh_file_response_412(cl, req);
-               return 0;
+               *ok = 0;
+               ensure_ret(uh_file_response_412(cl, req));
        }
 
-       return 1;
+       return *ok;
 }
 
-static int uh_file_if_unmodified_since(struct client *cl, struct http_request *req, struct stat *s)
+static int uh_file_if_unmodified_since(struct client *cl, struct http_request *req, struct stat *s, int *ok)
 {
        char *hdr = uh_file_header_lookup(req, "If-Unmodified-Since");
+       *ok = 1;
 
        if( hdr )
        {
                if( uh_file_date2unix(hdr) <= s->st_mtime )
                {
-                       uh_file_response_412(cl, req);
-                       return 0;
+                       *ok = 0;
+                       ensure_ret(uh_file_response_412(cl, req));
                }
        }
 
-       return 1;
+       return *ok;
 }
 
 
-#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;
@@ -335,6 +335,7 @@ out:
 void uh_file_request(struct client *cl, struct http_request *req, struct path_info *pi)
 {
        int rlen;
+       int ok = 1;
        int fd = -1;
        char buf[UH_LIMIT_MSGHEAD];
 
@@ -342,15 +343,16 @@ void uh_file_request(struct client *cl, struct http_request *req, struct path_in
        if( (pi->stat.st_mode & S_IFREG) && ((fd = open(pi->phys, O_RDONLY)) > 0) )
        {
                /* test preconditions */
-               if(
-                       uh_file_if_modified_since(cl, req, &pi->stat)   &&
-                       uh_file_if_match(cl, req, &pi->stat)            &&
-                       uh_file_if_range(cl, req, &pi->stat)            &&
-                       uh_file_if_unmodified_since(cl, req, &pi->stat) &&
-                       uh_file_if_none_match(cl, req, &pi->stat)
-               ) {
+               if(ok) ensure_out(uh_file_if_modified_since(cl, req, &pi->stat, &ok));
+               if(ok) ensure_out(uh_file_if_match(cl, req, &pi->stat, &ok));
+               if(ok) ensure_out(uh_file_if_range(cl, req, &pi->stat, &ok));
+               if(ok) ensure_out(uh_file_if_unmodified_since(cl, req, &pi->stat, &ok));
+               if(ok) ensure_out(uh_file_if_none_match(cl, req, &pi->stat, &ok));
+
+               if( ok > 0 )
+               {
                        /* write status */
-                       uh_file_response_200(cl, req, &pi->stat);
+                       ensure_out(uh_file_response_200(cl, req, &pi->stat));
 
                        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));
@@ -385,7 +387,7 @@ void uh_file_request(struct client *cl, struct http_request *req, struct path_in
        else if( (pi->stat.st_mode & S_IFDIR) && !cl->server->conf->no_dirlists )
        {
                /* write status */
-               uh_file_response_200(cl, req, NULL);
+               ensure_out(uh_file_response_200(cl, req, NULL));
 
                if( req->version > 1.0 )
                        ensure_out(uh_http_send(cl, NULL, "Transfer-Encoding: chunked\r\n", -1));