add feature: support for running scripts through an interpreter. Thanks Florian Schirmer <jolt@tuxbox.org>

git-svn-id: svn://busybox.net/trunk/busybox@13759 69ca8d6d-28ef-0310-b511-8ec308f3f277

2 files changed, 51 insertions, 5 deletions

diff --git a/networking/Config.in b/networking/Config.in
index 0f4381b5c..c0278778e 100644
--- a/networking/Config.in
+++ b/networking/Config.in
@@ -85,7 +85,6 @@ config CONFIG_FEATURE_HTTPD_AUTH_MD5
           Enables basic per url authentication from /etc/httpd.conf
           using md5 passwords.
 
-
 if !CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
 config CONFIG_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
         bool "  Support reloading the global config file using hup signal"
@@ -122,6 +121,17 @@ config CONFIG_FEATURE_HTTPD_CGI
           This option allows scripts and executables to be invoked
           when specific urls are requested.
 
+config CONFIG_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
+        bool "  Enable support for running scripts through an interpreter"
+        default n
+        depends on CONFIG_FEATURE_HTTPD_CGI
+        help
+          This option enables support for running scripts through an 
+          interpreter. Turn this on, if you want PHP scripts to work 
+          properly. You need to supply an addition line in your httpd 
+          config file:
+          *.php:/path/to/your/php
+
 config CONFIG_FEATURE_HTTPD_SET_REMOTE_PORT_TO_ENV
         bool "  Support the REMOTE_PORT environment variable for CGI"
         default n
diff --git a/networking/httpd.c b/networking/httpd.c
index b44adf730..99a87d186 100644
--- a/networking/httpd.c
+++ b/networking/httpd.c
@@ -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.
@@ -285,6 +286,9 @@ 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 +533,7 @@ 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
@@ -538,6 +542,9 @@ static void parse_conf(const char *path, int flag)
 #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
 
@@ -601,6 +608,9 @@ static void parse_conf(const char *path, int flag)
 #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
            && *p0 != '.'
 #endif
+#ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
+           && *p0 != '*'
+#endif
           )
                continue;
         if(*p0 == 'A' || *p0 == 'D') {
@@ -672,7 +682,7 @@ 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 +698,14 @@ 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 +1237,29 @@ 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);
                 }
             }
       }