19663905eef3c662d647b8da9d30ced044290713
max
  Fri Oct 24 06:33:41 2025 -0700
making hgMenubar not abort when run outside of an Apache SSI statement, refs #36580

diff --git src/hg/hgMenubar/hgMenubar.c src/hg/hgMenubar/hgMenubar.c
index df6c9a2459f..e0e86341860 100644
--- src/hg/hgMenubar/hgMenubar.c
+++ src/hg/hgMenubar/hgMenubar.c
@@ -3,30 +3,32 @@
  * On an Apache with activated SSI, a html statement like
  * <!--#include virtual="../cgi-bin/hgMenubar"-->
  * will include the menu bar into a static page.
  */
 #include "common.h"
 #include "cheapcgi.h"
 #include "dystring.h"
 #include "filePath.h"
 #include "linefile.h"
 #include "jsHelper.h"
 
 #define CGI_NAME "cgi-bin/hgMenubar"
 #define NAVBAR_INC_PATH "/inc/globalNavBar.inc"
 #define OLD_HREF "href=\"../"
 
+char* errMessage;
+
 char *incFilePath(char *cgiPath, char *filePath, char *docRoot)
 /* Replace CGI_NAME in cgiPath with docRoot/filePath.  filePath must begin with "/" eg "/inc/..." */
 {
 char *incPath = replaceChars(cgiPath, "/"CGI_NAME, filePath);
 return catTwoStrings(docRoot, incPath);
 }
 
 void printIncludes(char* baseDir)
 {
 printf ("<noscript><div class='noscript'><div class='noscript-inner'><p><b>JavaScript is disabled in your web browser</b></p><p>You must have JavaScript enabled in your web browser to use the Genome Browser</p></div></div></noscript>\n");
 printf ("<script type='text/javascript' SRC='%sjs/jquery.js'></script>\n", baseDir);
 printf ("<script type='text/javascript' SRC='%sjs/jquery.plugins.js'></script>\n", baseDir);
 printf("<script type='text/javascript' SRC='%s/js/utils.js'></script>\n", baseDir);
 printf ("<LINK rel='STYLESHEET' href='%sstyle/nice_menu.css' TYPE='text/css'>\n", baseDir);
 }
@@ -67,33 +69,40 @@
 "            e.currentTarget.href += \"&pix=\" + pix;\n"
 "        }\n"
 "    }\n"
 "});\n");
 jsInlineFinish();
 }
 
 
 void parseEnvOrDie (char **cgiPath, char** docRoot, char** pagePath)
 {
 *cgiPath = getenv("SCRIPT_NAME");
 *docRoot = getenv("DOCUMENT_ROOT");
 *pagePath = getenv("REDIRECT_URL");
 if (*pagePath == NULL)
     *pagePath = getenv("DOCUMENT_URI");
+if (*pagePath == NULL)
+    {
+    *pagePath = cloneString("/inc/");
+    errMessage = "Error: hgMenubar was run without the REDIRECT_URL or DOCUMENT_URI variable set. Looks like it wasn't run from an SSI statement. Defaulting to the 'inc/' directory, avoids errors in the Apache error log.";
+    }
 
 if ( (*cgiPath == NULL) || (*docRoot == NULL) || (*pagePath == NULL) )
     {
     fprintf (stderr, "Error: bad invocation of menubar\n");
     exit (1);
     }
 }
 
 int main(int argc, char *argv[])
 /* Process command line. */
 {
 char *cgiPath, *docRoot, *pagePath;
 parseEnvOrDie(&cgiPath, &docRoot, &pagePath);
 cgiSpoof(&argc, argv);
 char *incFile = cgiUsualString("incFile", NAVBAR_INC_PATH);
 printMenuBar(cgiPath, docRoot, pagePath, incFile);
+if (errMessage)
+    puts(errMessage);
 return 0;
 }