Added RPM install detail

[privoxy.git] / cgi.c

diff --git a/cgi.c b/cgi.c
index 6df1413..062b976 100644 (file)
--- a/cgi.c
+++ b/cgi.c
@@ -1,4 +1,4 @@
-const char cgi_rcs[] = "$Id: cgi.c,v 1.60 2002/04/08 20:50:25 swa Exp $";
+const char cgi_rcs[] = "$Id: cgi.c,v 1.62 2002/04/10 19:59:46 jongfoster Exp $";
 /*********************************************************************
  *
  * File        :  $Source: /cvsroot/ijbswa/current/cgi.c,v $
@@ -38,6 +38,14 @@ const char cgi_rcs[] = "$Id: cgi.c,v 1.60 2002/04/08 20:50:25 swa Exp $";
  *
  * Revisions   :
  *    $Log: cgi.c,v $
+ *    Revision 1.62  2002/04/10 19:59:46  jongfoster
+ *    Fixes to #include in templates:
+ *    - Didn't close main file if loading an included template fails.
+ *    - I'm paranoid and want to disallow "#include /etc/passwd".
+ *
+ *    Revision 1.61  2002/04/10 13:37:48  oes
+ *    Made templates modular: template_load now recursive with max depth 1
+ *
  *    Revision 1.60  2002/04/08 20:50:25  swa
  *    fixed JB spelling
  *
@@ -552,7 +560,7 @@ static struct map *parse_cgi_parameters(char *argstring);
  * Function    :  dispatch_cgi
  *
  * Description :  Checks if a request URL has either the magical
- *                hostname CGI_SITE_1_HOST (usully http://i.j.b/) or
+ *                hostname CGI_SITE_1_HOST (usually http://p.p/) or
  *                matches CGI_SITE_2_HOST CGI_SITE_2_PATH (usually
  *                http://ijbswa.sourceforge.net/config). If so, it passes
  *                the (rest of the) path onto dispatch_known_cgi, which
@@ -1275,6 +1283,7 @@ jb_err template_load(struct client_state *csp, char **template_ptr,
    char *full_path;
    char *file_buffer;
    char *included_module;
+   const char *p;
    FILE *fp;
    char buf[BUFFER_SIZE];
 
@@ -1284,9 +1293,21 @@ jb_err template_load(struct client_state *csp, char **template_ptr,
 
    *template_ptr = NULL;
 
-   /*
-    * Open template file or fail
-    */
+   /* Validate template name.  Paranoia. */
+   for (p = templatename; *p != 0; p++)
+   {
+      if ( ((*p < 'a') || (*p > 'z'))
+        && ((*p < 'A') || (*p > 'Z'))
+        && ((*p < '0') || (*p > '9'))
+        && (*p != '-')
+        && (*p != '.'))
+      {
+         /* Illegal character */
+         return JB_ERR_FILE;
+      }
+   }
+
+   /* Generate full path */
 
    templates_dir_path = make_path(csp->config->confdir, "templates");
    if (templates_dir_path == NULL)
@@ -1301,6 +1322,8 @@ jb_err template_load(struct client_state *csp, char **template_ptr,
       return JB_ERR_MEMORY;
    }
 
+   /* Allocate buffer */
+
    file_buffer = strdup("");
    if (file_buffer == NULL)
    {
@@ -1308,6 +1331,8 @@ jb_err template_load(struct client_state *csp, char **template_ptr,
       return JB_ERR_MEMORY;
    }
 
+   /* Open template file */
+
    if (NULL == (fp = fopen(full_path, "r")))
    {
       log_error(LOG_LEVEL_ERROR, "Cannot open template file %s: %E", full_path);
@@ -1318,7 +1343,7 @@ jb_err template_load(struct client_state *csp, char **template_ptr,
    free(full_path);
 
    /* 
-    * Read the file, ignoring comments, and honring #include
+    * Read the file, ignoring comments, and honoring #include
     * statements, unless we're already called recursively.
     *
     * FIXME: The comment handling could break with lines >BUFFER_SIZE long.
@@ -1331,17 +1356,16 @@ jb_err template_load(struct client_state *csp, char **template_ptr,
          if (JB_ERR_OK != (err = template_load(csp, &included_module, chomp(buf + 9), 1)))
          {
             free(file_buffer);
+            fclose(fp);
             return err;
          }
 
-         if (string_append(&file_buffer, included_module))
+         if (string_join(&file_buffer, included_module))
          {
             fclose(fp);
-            free(included_module);
             return JB_ERR_MEMORY;
          }
 
-         free(included_module);
          continue;
       }