-const char cgi_rcs[] = "$Id: cgi.c,v 1.30 2001/10/02 15:30:57 oes Exp $";
+const char cgi_rcs[] = "$Id: cgi.c,v 1.31 2001/10/10 10:56:39 oes Exp $";
/*********************************************************************
*
* File : $Source: /cvsroot/ijbswa/current/cgi.c,v $
*
* Revisions :
* $Log: cgi.c,v $
+ * Revision 1.31 2001/10/10 10:56:39 oes
+ * Failiure to load template now fatal. Before, the user got a hard-to-understand assertion failure from cgi.c
+ *
* Revision 1.30 2001/10/02 15:30:57 oes
* Introduced show-request cgi
*
const char cgi_h_rcs[] = CGI_H_VERSION;
-const struct cgi_dispatcher cgi_dispatcher[] = {
- { "robots.txt",
- 10, cgi_robots_txt,
- "HIDE Sends a robots.txt file to tell robots to go away." },
+static const struct cgi_dispatcher cgi_dispatchers[] = {
+ { "",
+ cgi_default,
+ "Junkbuster main page" },
{ "show-status",
- 11, cgi_show_status,
+ cgi_show_status,
"Show information about the current configuration" },
- { "show-url-info",
- 13, cgi_show_url_info,
- "Show which actions apply to a URL and why" },
{ "show-version",
- 12, cgi_show_version,
+ cgi_show_version,
"Show the source code version numbers" },
- { "send-banner",
- 11, cgi_send_banner,
- "HIDE Send the transparent or \"Junkbuster\" gif" },
+ { "show-request",
+ cgi_show_request,
+ "Show the client's request headers." },
+ { "show-url-info",
+ cgi_show_url_info,
+ "Show which actions apply to a URL and why" },
#ifdef FEATURE_CGI_EDIT_ACTIONS
- { "edit-actions-list",
- 17, cgi_edit_actions_list,
+ { "edit-actions",
+ cgi_edit_actions,
"Edit the actions list" },
+#endif /* def FEATURE_CGI_EDIT_ACTIONS */
+
+#ifdef FEATURE_CGI_EDIT_ACTIONS
+ { "edit-actions-for-url",
+ cgi_edit_actions_for_url,
+ NULL /* Edit the actions for (a) specified URL(s) */ },
+ { "edit-actions-list",
+ cgi_edit_actions_list,
+ NULL /* Edit the actions list */ },
{ "edit-actions-submit",
- 19, cgi_edit_actions_submit,
- "HIDE Change the actions for (a) specified URL(s)" },
- { "edit-actions",
- 12, cgi_edit_actions,
- "HIDE Edit the actions for (a) specified URL(s)" },
+ cgi_edit_actions_submit,
+ NULL /* Change the actions for (a) specified URL(s) */ },
#endif /* def FEATURE_CGI_EDIT_ACTIONS */
- { "show-request",
- 12, cgi_show_request,
- "Show the client's request headers." },
- { "",
- 0, cgi_default,
- "Junkbuster main page" },
- { NULL, 0, NULL, NULL }
+ { "robots.txt",
+ cgi_robots_txt,
+ NULL /* Sends a robots.txt file to tell robots to go away. */ },
+ { "send-banner",
+ cgi_send_banner,
+ NULL /* Send the transparent or \"Junkbuster\" gif */ },
+ { NULL, /* NULL Indicates end of list and default page */
+ cgi_error_404,
+ NULL /* Unknown CGI page */ }
};
/*
* Some images
*
- * Hint: You can encode your own GIFs like that:
+ * Hint: You can encode your own GIFs like this:
* perl -e 'while (read STDIN, $c, 1) { printf("\\%.3o,", unpack("C", $c)); }'
*/
const int image_blank_gif_length = sizeof(image_blank_gif_data) - 1;
+static struct http_response *dispatch_known_cgi(struct client_state * csp,
+ const char * path);
+
+
/*********************************************************************
*
* Function : dispatch_cgi
*
* Description : Checks if a request URL has either the magical hostname
- * i.j.b or matches HOME_PAGE_URL/config/. If so, it parses
- * the (rest of the) path as a cgi name plus query string,
- * prepares a map that maps CGI parameter names to their values,
- * initializes the http_response struct, and calls the
- * relevant CGI handler function.
+ * i.j.b or matches HOME_PAGE_URL/config/. If so, it passes
+ * the (rest of the) path onto dispatch_known_cgi, which
+ * calls the relevant CGI handler function.
*
* Parameters :
* 1 : csp = Current client state (buffers, headers, etc...)
*********************************************************************/
struct http_response *dispatch_cgi(struct client_state *csp)
{
- char *argstring = NULL;
- const struct cgi_dispatcher *d;
- struct map *param_list;
- struct http_response *rsp;
+ const char *host = csp->http->host;
+ const char *path = csp->http->path;
/*
* Should we intercept ?
*/
/* Either the host matches CGI_PREFIX_HOST ..*/
- if (0 == strcmpic(csp->http->host, CGI_PREFIX_HOST))
+ if ( (0 == strcmpic(host, CGI_PREFIX_HOST))
+ && (path[0] == '/') )
{
- /* ..then the path will all be for us */
- argstring = csp->http->path;
+ /* ..then the path will all be for us. Remove leading '/' */
+ path++;
}
- /* Or it's the host part HOME_PAGE_URL, and the path /config ? */
- else if ( (0 == strcmpic(csp->http->host, HOME_PAGE_URL + 7 ))
- && (0 == strncmpic(csp->http->path,"/config", 7))
- && ((csp->http->path[7] == '/') || (csp->http->path[7] == '\0')))
+ /* Or it's the host part HOME_PAGE_URL, and the path /config/ */
+ else if ( (0 == strcmpic(host, HOME_PAGE_URL + 7 ))
+ && (0 == strncmpic(path,"/config", 7)) )
{
- /* then it's everything following "/config" */
- argstring = csp->http->path + 7;
+ /* take everything following "/config" */
+ path += 7;
+ if (*path == '/')
+ {
+ /* skip the forward slash after "/config" */
+ path++;
+ }
+ else if (*path != '\0')
+ {
+ /* wierdness: URL is /configXXX, where XXX is some string */
+ return NULL;
+ }
}
else
{
+ /* Not a CGI */
return NULL;
}
* This is a CGI call.
*/
- /* Get mem for response or fail*/
- if (NULL == (rsp = alloc_http_response()))
+ return dispatch_cgi_2(csp, path);
+}
+
+
+/*********************************************************************
+ *
+ * Function : dispatch_known_cgi
+ *
+ * Description : Processes a CGI once dispatch_cgi has determined that
+ * it matches one of the magic prefixes. Parses the path
+ * as a cgi name plus query string, prepares a map that
+ * maps CGI parameter names to their values, initializes
+ * the http_response struct, and calls the relevant CGI
+ * handler function.
+ *
+ * Parameters :
+ * 1 : csp = Current client state (buffers, headers, etc...)
+ * 2 : path = Path of CGI, with the CGI prefix removed.
+ * Should not have a leading "/".
+ *
+ * Returns : http_response, or NULL on handler failure or out of
+ * memory.
+ *
+ *********************************************************************/
+static struct http_response *dispatch_known_cgi(struct client_state * csp,
+ const char * path)
+{
+ const struct cgi_dispatcher *d;
+ struct map *param_list;
+ struct http_response *rsp;
+ char *query_args_start;
+ char *path_copy;
+ int result;
+
+ if (NULL == (path_copy = strdup(path)))
{
return NULL;
}
+ query_args_start = path_copy;
+ while (*query_args_start && *query_args_start != '?')
+ {
+ query_args_start++;
+ }
+ if (*query_args_start == '?')
+ {
+ *query_args_start++ = '\0';
+ }
+
+ if (NULL == (param_list = parse_cgi_parameters(query_args_start)))
+ {
+ free(path_copy);
+ return(NULL);
+ }
+
- /* Remove leading slash */
- if (*argstring == '/')
+ /*
+ * At this point:
+ * path_copy = CGI call name
+ * param_list = CGI params, as map
+ */
+
+ /* Get mem for response or fail*/
+ if (NULL == (rsp = alloc_http_response()))
{
- argstring++;
+ free(path_copy);
+ free_map(param_list);
+ return NULL;
}
log_error(LOG_LEVEL_GPC, "%s%s cgi call", csp->http->hostport, csp->http->path);
csp->ip_addr_str, csp->http->cmd);
/* Find and start the right CGI function*/
- for (d = cgi_dispatcher; d->handler; d++)
+ for (d = cgi_dispatchers; FOREVER; d++)
{
- if (strncmp(argstring, d->name, d->name_length) == 0)
+ if ((d->name == NULL) || (strcmp(path_copy, d->name) == 0))
{
- if (NULL == (param_list =
- parse_cgi_parameters(argstring + d->name_length)))
+ result = (d->handler)(csp, rsp, param_list);
+ free(path_copy);
+ free_map(param_list);
+ if (result)
{
- free_map(param_list);
+ /* Error in handler */
free_http_response(rsp);
return(NULL);
}
- if ((d->handler)(csp, rsp, param_list))
+ else
{
- free_map(param_list);
- free_http_response(rsp);
- return(NULL);
+ /* It worked */
+ return(finish_http_response(rsp));
}
-
- free_map(param_list);
- return(finish_http_response(rsp));
}
}
-
- /* Can't get here, since cgi_default will match all requests */
- free_http_response(rsp);
- return(NULL);
-
}
* pairs and store them in a struct map list.
*
* Parameters :
- * 1 : string = string to be parsed
+ * 1 : string = string to be parsed. Will be trashed.
*
* Returns : pointer to param list, or NULL if out of memory.
*
*********************************************************************/
-struct map *parse_cgi_parameters(char *argstring)
+static struct map *parse_cgi_parameters(char *argstring)
{
- char *tmp, *p;
+ char *p;
char *vector[BUFFER_SIZE];
int pairs, i;
struct map *cgi_params;
return NULL;
}
- if(*argstring == '?')
- {
- argstring++;
- }
- if (NULL == (tmp = strdup(argstring)))
- {
- free_map(cgi_params);
- return NULL;
- }
-
- pairs = ssplit(tmp, "&", vector, SZ(vector), 1, 1);
+ pairs = ssplit(argstring, "&", vector, SZ(vector), 1, 1);
for (i = 0; i < pairs; i++)
{
}
}
- free(tmp);
return(cgi_params);
}
}
/* List available unhidden CGI's and export as "other-cgis" */
- for (d = cgi_dispatcher; d->handler; d++)
+ for (d = cgi_dispatchers; d->name; d++)
{
- if (strncmp(d->description, "HIDE", 4) && strcmp(d->name, self))
+ if (d->description && strcmp(d->name, self))
{
snprintf(buf, BUFFER_SIZE, "<li><a href=%s/config/%s>%s</a></li>\n",
HOME_PAGE_URL, d->name, d->description);
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