- use RESERVE_CONFIG_BUFFER. For defconfig this gives:
[oweals/busybox.git] / networking / httpd.c
index b44adf730389f56799cf93938cd04c29aa00dfc3..6e80fd9bed9440b2556b8928f0108ed82386891c 100644 (file)
@@ -54,6 +54,7 @@
  * /adm:admin:setup  # Require user admin, pwd setup on urls starting with /adm/
  * /adm:toor:PaSsWd  # or user toor, pwd PaSsWd on urls starting with /adm/
  * .au:audio/basic   # additional mime type for audio.au files
+ * *.php:/path/php   # running cgi.php scripts through an interpreter
  *
  * A/D may be as a/d or allow/deny - first char case insensitive
  * Deny IP rules take precedence over allow rules.
@@ -239,16 +240,12 @@ typedef struct
 {
   char buf[MAX_MEMORY_BUFF];
 
-#ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
-  const char *realm;
-  char *remoteuser;
-#endif
+  USE_FEATURE_HTTPD_BASIC_AUTH(const char *realm;)
+  USE_FEATURE_HTTPD_BASIC_AUTH(char *remoteuser;)
 
   const char *query;
 
-#ifdef CONFIG_FEATURE_HTTPD_CGI
-  char *referer;
-#endif
+  USE_FEATURE_HTTPD_CGI(char *referer;)
 
   const char *configFile;
 
@@ -285,6 +282,9 @@ typedef struct
 #endif
   volatile int alarm_signaled;
 
+#ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
+  Htaccess *script_i;           /* config script interpreters */
+#endif
 } HttpdConfig;
 
 static HttpdConfig *config;
@@ -529,7 +529,7 @@ static void parse_conf(const char *path, int flag)
 
     config->flg_deny_all = 0;
 
-#if defined(CONFIG_FEATURE_HTTPD_BASIC_AUTH) || defined(CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES)
+#if defined(CONFIG_FEATURE_HTTPD_BASIC_AUTH) || defined(CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES) || defined(CONFIG_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR)
     /* retain previous auth and mime config only for subdir parse */
     if(flag != SUBDIR_PARSE) {
 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
@@ -537,6 +537,9 @@ static void parse_conf(const char *path, int flag)
 #endif
 #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
        free_config_lines(&config->mime_a);
+#endif
+#ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
+       free_config_lines(&config->script_i);
 #endif
     }
 #endif
@@ -600,6 +603,9 @@ static void parse_conf(const char *path, int flag)
 #endif
 #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
           && *p0 != '.'
+#endif
+#ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
+          && *p0 != '*'
 #endif
          )
               continue;
@@ -672,7 +678,7 @@ static void parse_conf(const char *path, int flag)
        }
 #endif
 
-#if defined(CONFIG_FEATURE_HTTPD_BASIC_AUTH) || defined(CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES)
+#if defined(CONFIG_FEATURE_HTTPD_BASIC_AUTH) || defined(CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES) || defined(CONFIG_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR)
        /* storing current config line */
        cur = calloc(1, sizeof(Htaccess) + strlen(p0));
        if(cur) {
@@ -688,6 +694,14 @@ static void parse_conf(const char *path, int flag)
                continue;
            }
 #endif
+#ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
+           if(*cf == '*' && cf[1] == '.') {
+               /* config script interpreter line move top for overwrite previous */
+               cur->next = config->script_i;
+               config->script_i = cur;
+               continue;
+           }
+#endif
 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
            free(p0);
            if(prev == NULL) {
@@ -1219,11 +1233,29 @@ static int sendCgi(const char *url,
            if(script) {
                *script = '\0';
                if(chdir(realpath_buff) == 0) {
-                 *script = '/';
                  // now run the program.  If it fails,
                  // use _exit() so no destructors
                  // get called and make a mess.
-                 execv(realpath_buff, argp);
+#ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
+                 char *interpr = NULL;
+                 char *suffix = strrchr(purl, '.');
+
+                 if(suffix) {
+                       Htaccess * cur;
+                       for (cur = config->script_i; cur; cur = cur->next)
+                               if(strcmp(cur->before_colon + 1, suffix) == 0) {
+                                       interpr = cur->after_colon;
+                                       break;
+                               }
+                 }
+#endif
+                 *script = '/';
+#ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
+                 if (interpr)
+                       execv(interpr, argp);
+                 else
+#endif
+                       execv(realpath_buff, argp);
                }
            }
       }
@@ -1955,39 +1987,42 @@ static void sighup_handler(int sig)
 }
 #endif
 
+enum httpd_opts_nums {
+       c_opt_config_file = 0,
+       d_opt_decode_url,
+       h_opt_home_httpd,
+       USE_FEATURE_HTTPD_ENCODE_URL_STR(e_opt_encode_url,)
+       USE_FEATURE_HTTPD_BASIC_AUTH(r_opt_realm,)
+       USE_FEATURE_HTTPD_AUTH_MD5(m_opt_md5,)
+       USE_FEATURE_HTTPD_SETUID(u_opt_setuid,)
+       SKIP_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY(p_opt_port,)
+};
 
 static const char httpd_opts[]="c:d:h:"
-#ifdef CONFIG_FEATURE_HTTPD_ENCODE_URL_STR
-                               "e:"
-#endif
-#define OPT_INC_1 ENABLE_FEATURE_HTTPD_ENCODE_URL_STR
+       USE_FEATURE_HTTPD_ENCODE_URL_STR("e:")
+       USE_FEATURE_HTTPD_BASIC_AUTH("r:")
+       USE_FEATURE_HTTPD_AUTH_MD5("m:")
+       USE_FEATURE_HTTPD_SETUID("u:")
+       SKIP_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY("p:");
 
-#ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
-                               "r:"
-#endif
-#define OPT_INC_2 ENABLE_FEATURE_HTTPD_BASIC_AUTH
+#define OPT_CONFIG_FILE (1<<c_opt_config_file)
+#define OPT_DECODE_URL  (1<<d_opt_decode_url)
+#define OPT_HOME_HTTPD  (1<<h_opt_home_httpd)
 
-#ifdef CONFIG_FEATURE_HTTPD_AUTH_MD5
-                               "m:"
-#endif
-#define OPT_INC_3 ENABLE_FEATURE_HTTPD_AUTH_MD5
+#define OPT_ENCODE_URL  USE_FEATURE_HTTPD_ENCODE_URL_STR((1<<e_opt_encode_url)) \
+                       SKIP_FEATURE_HTTPD_ENCODE_URL_STR(0)
 
-#ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
-                               "p:"
-#endif
-#ifdef CONFIG_FEATURE_HTTPD_SETUID
-                               "u:"
-#endif
-                                       ;
+#define OPT_REALM       USE_FEATURE_HTTPD_BASIC_AUTH((1<<r_opt_realm)) \
+                       SKIP_FEATURE_HTTPD_BASIC_AUTH(0)
+
+#define OPT_MD5         USE_FEATURE_HTTPD_AUTH_MD5((1<<m_opt_md5)) \
+                       SKIP_FEATURE_HTTPD_AUTH_MD5(0)
+
+#define OPT_SETUID      USE_FEATURE_HTTPD_SETUID((1<<u_opt_setuid)) \
+                       SKIP_FEATURE_HTTPD_SETUID(0)
 
-#define OPT_CONFIG_FILE (1<<0)                                    /* c */
-#define OPT_DECODE_URL  (1<<1)                                    /* d */
-#define OPT_HOME_HTTPD  (1<<2)                                    /* h */
-#define OPT_ENCODE_URL  (1<<(2+OPT_INC_1))                        /* e */
-#define OPT_REALM       (1<<(2+OPT_INC_1+OPT_INC_2))              /* r */
-#define OPT_MD5         (1<<(2+OPT_INC_1+OPT_INC_2+OPT_INC_3))    /* m */
-#define OPT_PORT        (1<<(3+OPT_INC_1+OPT_INC_2+OPT_INC_3))    /* p */
-#define OPT_SETUID      (1<<(4+OPT_INC_1+OPT_INC_2+OPT_INC_3))    /* u */
+#define OPT_PORT        SKIP_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY((1<<p_opt_port)) \
+                       USE_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY(0)
 
 
 #ifdef HTTPD_STANDALONE
@@ -1999,22 +2034,14 @@ int httpd_main(int argc, char *argv[])
   unsigned long opt;
   const char *home_httpd = home;
   char *url_for_decode;
-#ifdef CONFIG_FEATURE_HTTPD_ENCODE_URL_STR
-  const char *url_for_encode;
-#endif
-#ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
-  const char *s_port;
-  int server;
-#endif
+  USE_FEATURE_HTTPD_ENCODE_URL_STR(const char *url_for_encode;)
+  SKIP_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY(const char *s_port;)
+  SKIP_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY(int server;)
 
-#ifdef CONFIG_FEATURE_HTTPD_SETUID
-  const char *s_uid;
-  long uid = -1;
-#endif
+  USE_FEATURE_HTTPD_SETUID(const char *s_uid;)
+  USE_FEATURE_HTTPD_SETUID(long uid = -1;)
 
-#ifdef CONFIG_FEATURE_HTTPD_AUTH_MD5
-  const char *pass;
-#endif
+  USE_FEATURE_HTTPD_AUTH_MD5(const char *pass;)
 
   config = xcalloc(1, sizeof(*config));
 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
@@ -2029,22 +2056,12 @@ int httpd_main(int argc, char *argv[])
 
   opt = bb_getopt_ulflags(argc, argv, httpd_opts,
                        &(config->configFile), &url_for_decode, &home_httpd
-#ifdef CONFIG_FEATURE_HTTPD_ENCODE_URL_STR
-                       , &url_for_encode
-#endif
-#ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
-                       , &(config->realm)
-# ifdef CONFIG_FEATURE_HTTPD_AUTH_MD5
-                       , &pass
-# endif
-#endif
-#ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
-                       , &s_port
-#endif
-#ifdef CONFIG_FEATURE_HTTPD_SETUID
-                       , &s_uid
-#endif
-    );
+                       USE_FEATURE_HTTPD_ENCODE_URL_STR(, &url_for_encode)
+                       USE_FEATURE_HTTPD_BASIC_AUTH(, &(config->realm))
+                       USE_FEATURE_HTTPD_AUTH_MD5(, &pass)
+                       USE_FEATURE_HTTPD_SETUID(, &s_uid)
+                       SKIP_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY(, &s_port)
+       );
 
   if(opt & OPT_DECODE_URL) {
       printf("%s", decodeString(url_for_decode, 1));