package/network/services/uhttpd/src/uhttpd-utils.h

   1 /*
   2  * uhttpd - Tiny single-threaded httpd - Utility header
   3  *
   4  *   Copyright (C) 2010-2012 Jo-Philipp Wich <xm@subsignal.org>
   5  *
   6  *  Licensed under the Apache License, Version 2.0 (the "License");
   7  *  you may not use this file except in compliance with the License.
   8  *  You may obtain a copy of the License at
   9  *
  10  *      http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  *  Unless required by applicable law or agreed to in writing, software
  13  *  distributed under the License is distributed on an "AS IS" BASIS,
  14  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  *  See the License for the specific language governing permissions and
  16  *  limitations under the License.
  17  */
  18
  19 #ifndef _UHTTPD_UTILS_
  20
  21 #include <stdarg.h>
  22 #include <fcntl.h>
  23 #include <pwd.h>
  24 #include <sys/stat.h>
  25
  26 #include <libubox/uloop.h>
  27
  28
  29 #ifdef HAVE_SHADOW
  30 #include <shadow.h>
  31 #endif
  32
  33 #define min(x, y) (((x) < (y)) ? (x) : (y))
  34 #define max(x, y) (((x) > (y)) ? (x) : (y))
  35
  36 #define array_size(x) \
  37         (sizeof(x) / sizeof(x[0]))
  38
  39 #define foreach_header(i, h) \
  40         for( i = 0; (i + 1) < (sizeof(h) / sizeof(h[0])) && h[i]; i += 2 )
  41
  42 #define fd_cloexec(fd) \
  43         fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC)
  44
  45 #define fd_nonblock(fd) \
  46         fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_NONBLOCK)
  47
  48 #define ensure_out(x) \
  49         do { if((x) < 0) goto out; } while(0)
  50
  51 #define ensure_ret(x) \
  52         do { if((x) < 0) return -1; } while(0)
  53
  54
  55 struct path_info {
  56         char *root;
  57         char *phys;
  58         char *name;
  59         char *info;
  60         char *query;
  61         int redirected;
  62         struct stat stat;
  63 };
  64
  65
  66 const char * sa_straddr(void *sa);
  67 const char * sa_strport(void *sa);
  68 int sa_port(void *sa);
  69 int sa_rfc1918(void *sa);
  70
  71 char *strfind(char *haystack, int hslen, const char *needle, int ndlen);
  72
  73 bool uh_socket_wait(int fd, int sec, bool write);
  74
  75 int uh_raw_send(int fd, const char *buf, int len, int seconds);
  76 int uh_raw_recv(int fd, char *buf, int len, int seconds);
  77 int uh_tcp_send(struct client *cl, const char *buf, int len);
  78 int uh_tcp_send_lowlevel(struct client *cl, const char *buf, int len);
  79 int uh_tcp_recv(struct client *cl, char *buf, int len);
  80 int uh_tcp_recv_lowlevel(struct client *cl, char *buf, int len);
  81
  82 int uh_http_sendhf(struct client *cl, int code, const char *summary,
  83                                    const char *fmt, ...);
  84
  85 #define uh_http_response(cl, code, message) \
  86         uh_http_sendhf(cl, code, message, message)
  87
  88 int uh_http_sendc(struct client *cl, const char *data, int len);
  89
  90 int uh_http_sendf(
  91         struct client *cl, struct http_request *req,
  92         const char *fmt, ...
  93 );
  94
  95 int uh_http_send(
  96         struct client *cl, struct http_request *req,
  97         const char *buf, int len
  98 );
  99
 100
 101 int uh_urldecode(char *buf, int blen, const char *src, int slen);
 102 int uh_urlencode(char *buf, int blen, const char *src, int slen);
 103 int uh_b64decode(char *buf, int blen, const unsigned char *src, int slen);
 104
 105
 106 struct auth_realm * uh_auth_add(char *path, char *user, char *pass);
 107
 108 int uh_auth_check(
 109         struct client *cl, struct http_request *req, struct path_info *pi
 110 );
 111
 112
 113 struct path_info * uh_path_lookup(struct client *cl, const char *url);
 114
 115 struct listener * uh_listener_add(int sock, struct config *conf);
 116 struct listener * uh_listener_lookup(int sock);
 117
 118 struct client * uh_client_add(int sock, struct listener *serv,
 119                               struct sockaddr_in6 *peer);
 120
 121 struct client * uh_client_lookup(int sock);
 122
 123 #define uh_client_error(cl, code, status, ...) do { \
 124         uh_http_sendhf(cl, code, status, __VA_ARGS__);  \
 125         uh_client_shutdown(cl);                         \
 126 } while(0)
 127
 128 void uh_client_shutdown(struct client *cl);
 129 void uh_client_remove(struct client *cl);
 130
 131 void uh_ufd_add(struct uloop_fd *u, uloop_fd_handler h, unsigned int ev);
 132 void uh_ufd_remove(struct uloop_fd *u);
 133
 134
 135 #ifdef HAVE_CGI
 136 struct interpreter * uh_interpreter_add(const char *extn, const char *path);
 137 struct interpreter * uh_interpreter_lookup(const char *path);
 138 #endif
 139
 140 #endif