client: remove <data_dir> option from cc_config.xml

This leads to confusion;
e.g. if you do "read config files" it will look for cc_config.xml
in the new directory, not find it, and set default options.
Also, log files end up in old directory.
Also, gui_rpc_auth.cfg will be in new directory,
and the Manager won't look there.

client/log_flags.cpp

@@ -248,7 +248,6 @@ void CC_CONFIG::show() {
 // (It's separate so that we can write messages in it)
 
 int CC_CONFIG::parse_options_client(XML_PARSER& xp) {
-    char path[MAXPATHLEN];
     string s;
     int n, retval;
 
@@ -311,13 +310,6 @@ int CC_CONFIG::parse_options_client(XML_PARSER& xp) {
             }
             continue;
         }
-        if (xp.parse_str("data_dir", path, sizeof(path))) {
-            if (chdir(path)) {
-                perror("chdir");
-                exit(1);
-            }
-            continue;
-        }
         if (xp.parse_bool("disallow_attach", disallow_attach)) continue;
         if (xp.parse_bool("dont_check_file_sizes", dont_check_file_sizes)) continue;
         if (xp.parse_bool("dont_contact_ref_site", dont_contact_ref_site)) continue;
@@ -525,19 +517,6 @@ int read_config_file(bool init, const char* fname) {
 
     if (init) {
         coprocs = cc_config.config_coprocs;
-        if (strlen(cc_config.data_dir)) {
-#ifdef _WIN32
-            _chdir(cc_config.data_dir);
-#else
-            if (chdir(cc_config.data_dir)) {
-                msg_printf(NULL, MSG_INFO,
-                    "Couldn't change to directory specified in cc_config.xml: %s",
-                    cc_config.data_dir
-                );
-                return ERR_OPENDIR;
-            }
-#endif
-        }
     } else {
         select_proxy_info();        // in case added or removed proxy info
     }

lib/cc_config.cpp

@@ -205,7 +205,6 @@ void CC_CONFIG::defaults() {
     client_new_version_text = "";
     client_version_check_url = "http://boinc.berkeley.edu/download.php?xml=1";
     config_coprocs.clear();
-    data_dir[0] = 0;
     disallow_attach = false;
     dont_check_file_sizes = false;
     dont_contact_ref_site = false;
@@ -336,9 +335,6 @@ int CC_CONFIG::parse_options(XML_PARSER& xp) {
             config_coprocs.add(c);
             continue;
         }
-        if (xp.parse_str("data_dir", data_dir, sizeof(data_dir))) {
-            continue;
-        }
         if (xp.parse_bool("disallow_attach", disallow_attach)) continue;
         if (xp.parse_bool("dont_check_file_sizes", dont_check_file_sizes)) continue;
         if (xp.parse_bool("dont_contact_ref_site", dont_contact_ref_site)) continue;
@@ -541,12 +537,6 @@ int CC_CONFIG::write(MIOFILE& out, LOG_FLAGS& log_flags) {
         );
     }
     
-    // Older versions of BOINC choke on empty data_dir string 
-    //
-    if (strlen(data_dir)) {
-        out.printf("        <data_dir>%s</data_dir>\n", data_dir);
-    }
-    
     out.printf(
         "        <disallow_attach>%d</disallow_attach>\n"
         "        <dont_check_file_sizes>%d</dont_check_file_sizes>\n"

lib/cc_config.h

@@ -146,7 +146,6 @@ struct CC_CONFIG {
     std::string client_new_version_text;
     std::string client_version_check_url;
     COPROCS config_coprocs;
-    char data_dir[256];
     bool disallow_attach;
     bool dont_check_file_sizes;
     bool dont_contact_ref_site;