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cgisimple.c
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/*********************************************************************
*
* File : $Source: /cvsroot/ijbswa/current/cgisimple.c,v $
*
* Purpose : Simple CGIs to get information about Privoxy's
* status.
*
* Copyright : Written by and Copyright (C) 2001-2022 the
* Privoxy team. https://www.privoxy.org/
*
* Based on the Internet Junkbuster originally written
* by and Copyright (C) 1997 Anonymous Coders and
* Junkbusters Corporation. http://www.junkbusters.com
*
* This program is free software; you can redistribute it
* and/or modify it under the terms of the GNU General
* Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will
* be useful, but WITHOUT ANY WARRANTY; without even the
* implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE. See the GNU General Public
* License for more details.
*
* The GNU General Public License should be included with
* this file. If not, you can view it at
* http://www.gnu.org/copyleft/gpl.html
* or write to the Free Software Foundation, Inc., 59
* Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
**********************************************************************/
#include "config.h"
#include <stdio.h>
#include <sys/types.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <assert.h>
#if defined (HAVE_ACCESS) && defined (HAVE_UNISTD_H)
#include <unistd.h>
#endif /* def HAVE_ACCESS && HAVE_UNISTD_H */
#include "project.h"
#include "cgi.h"
#include "cgisimple.h"
#include "list.h"
#include "encode.h"
#include "jcc.h"
#include "filters.h"
#include "actions.h"
#include "miscutil.h"
#include "loadcfg.h"
#include "parsers.h"
#include "urlmatch.h"
#include "errlog.h"
#ifdef FEATURE_CLIENT_TAGS
#include "client-tags.h"
#endif
static jb_err show_defines(struct map *exports);
static jb_err cgi_show_file(struct client_state *csp,
struct http_response *rsp,
const struct map *parameters);
static jb_err load_file(const char *filename, char **buffer, size_t *length);
/*********************************************************************
*
* Function : cgi_default
*
* Description : CGI function that is called for the CGI_SITE_1_HOST
* and CGI_SITE_2_HOST/CGI_SITE_2_PATH base URLs.
* Boring - only exports the default exports.
*
* Parameters :
* 1 : csp = Current client state (buffers, headers, etc...)
* 2 : rsp = http_response data structure for output
* 3 : parameters = map of cgi parameters
*
* CGI Parameters : none
*
* Returns : JB_ERR_OK on success
* JB_ERR_MEMORY on out-of-memory
*
*********************************************************************/
jb_err cgi_default(struct client_state *csp,
struct http_response *rsp,
const struct map *parameters)
{
struct map *exports;
(void)parameters;
assert(csp);
assert(rsp);
if (NULL == (exports = default_exports(csp, "")))
{
return JB_ERR_MEMORY;
}
return template_fill_for_cgi(csp, "default", exports, rsp);
}
/*********************************************************************
*
* Function : cgi_error_404
*
* Description : CGI function that is called if an unknown action was
* given.
*
* Parameters :
* 1 : csp = Current client state (buffers, headers, etc...)
* 2 : rsp = http_response data structure for output
* 3 : parameters = map of cgi parameters
*
* CGI Parameters : none
*
* Returns : JB_ERR_OK on success
* JB_ERR_MEMORY on out-of-memory error.
*
*********************************************************************/
jb_err cgi_error_404(struct client_state *csp,
struct http_response *rsp,
const struct map *parameters)
{
struct map *exports;
assert(csp);
assert(rsp);
assert(parameters);
if (NULL == (exports = default_exports(csp, NULL)))
{
return JB_ERR_MEMORY;
}
rsp->status = strdup_or_die("404 Privoxy configuration page not found");
return template_fill_for_cgi(csp, "cgi-error-404", exports, rsp);
}
#ifdef FEATURE_GRACEFUL_TERMINATION
/*********************************************************************
*
* Function : cgi_die
*
* Description : CGI function to shut down Privoxy.
* NOTE: Turning this on in a production build
* would be a BAD idea. An EXTREMELY BAD idea.
* In short, don't do it.
*
* Parameters :
* 1 : csp = Current client state (buffers, headers, etc...)
* 2 : rsp = http_response data structure for output
* 3 : parameters = map of cgi parameters
*
* CGI Parameters : none
*
* Returns : JB_ERR_OK on success
*
*********************************************************************/
jb_err cgi_die (struct client_state *csp,
struct http_response *rsp,
const struct map *parameters)
{
static const char status[] = "200 OK Privoxy shutdown request received";
static const char body[] =
"<html>\n"
"<head>\n"
" <title>Privoxy shutdown request received</title>\n"
" <link rel=\"shortcut icon\" href=\"" CGI_PREFIX "error-favicon.ico\" type=\"image/x-icon\">\n"
" <link rel=\"stylesheet\" type=\"text/css\" href=\"" CGI_PREFIX "send-stylesheet\">\n"
"</head>\n"
"<body>\n"
"<h1>Privoxy shutdown request received</h1>\n"
"<p>Privoxy is going to shut down after the next request.</p>\n"
"</body>\n"
"</html>\n";
assert(csp);
assert(rsp);
assert(parameters);
/* quit */
g_terminate = 1;
csp->flags &= ~CSP_FLAG_CLIENT_CONNECTION_KEEP_ALIVE;
rsp->content_length = 0;
rsp->head_length = 0;
rsp->is_static = 0;
rsp->body = strdup_or_die(body);
rsp->status = strdup_or_die(status);
return JB_ERR_OK;
}
#endif /* def FEATURE_GRACEFUL_TERMINATION */
/*********************************************************************
*
* Function : cgi_show_request
*
* Description : Show the client's request and what sed() would have
* made of it.
*
* Parameters :
* 1 : csp = Current client state (buffers, headers, etc...)
* 2 : rsp = http_response data structure for output
* 3 : parameters = map of cgi parameters
*
* CGI Parameters : none
*
* Returns : JB_ERR_OK on success
* JB_ERR_MEMORY on out-of-memory error.
*
*********************************************************************/
jb_err cgi_show_request(struct client_state *csp,
struct http_response *rsp,
const struct map *parameters)
{
char *p;
struct map *exports;
assert(csp);
assert(rsp);
assert(parameters);
if (NULL == (exports = default_exports(csp, "show-request")))
{
return JB_ERR_MEMORY;
}
/*
* Repair the damage done to the IOB by get_header()
*/
for (p = csp->client_iob->buf; p < csp->client_iob->cur; p++)
{
if (*p == '\0') *p = '\n';
}
/*
* Export the original client's request and the one we would
* be sending to the server if this wasn't a CGI call
*/
if (map(exports, "client-request", 1, html_encode(csp->client_iob->buf), 0))
{
free_map(exports);
return JB_ERR_MEMORY;
}
if (map(exports, "processed-request", 1,
html_encode_and_free_original(
#ifdef FEATURE_HTTPS_INSPECTION
csp->http->ssl ?
list_to_text(csp->https_headers) :
#endif
list_to_text(csp->headers)
), 0))
{
free_map(exports);
return JB_ERR_MEMORY;
}
return template_fill_for_cgi(csp, "show-request", exports, rsp);
}
#ifdef FEATURE_CLIENT_TAGS
/*********************************************************************
*
* Function : cgi_create_client_tag_form
*
* Description : Creates a HTML form to enable or disable a given
* client tag.
* XXX: Could use a template.
*
* Parameters :
* 1 : form = Buffer to fill with the generated form
* 2 : size = Size of the form buffer
* 3 : tag = Name of the tag this form should affect
* 4 : toggle_state = Desired state after the button pressed 0
* 5 : expires = Whether or not the tag should be enabled.
* Only checked if toggle_state is 1.
*
* Returns : void
*
*********************************************************************/
static void cgi_create_client_tag_form(char *form, size_t size,
const char *tag, int toggle_state, int expires)
{
char *button_name;
if (toggle_state == 1)
{
button_name = (expires == 1) ? "Enable" : "Enable temporarily";
}
else
{
assert(toggle_state == 0);
button_name = "Disable";
}
snprintf(form, size,
"<form method=\"GET\" action=\""CGI_PREFIX"toggle-client-tag\" style=\"display: inline\">\n"
" <input type=\"hidden\" name=\"tag\" value=\"%s\">\n"
" <input type=\"hidden\" name=\"toggle-state\" value=\"%i\">\n"
" <input type=\"hidden\" name=\"expires\" value=\"%u\">\n"
" <input type=\"submit\" value=\"%s\">\n"
"</form>", tag, toggle_state, !expires, button_name);
}
/*********************************************************************
*
* Function : cgi_show_client_tags
*
* Description : Shows the tags that can be set based on the client
* address (opt-in).
*
* Parameters :
* 1 : csp = Current client state (buffers, headers, etc...)
* 2 : rsp = http_response data structure for output
* 3 : parameters = map of cgi parameters
*
* CGI Parameters : none
*
* Returns : JB_ERR_OK on success
* JB_ERR_MEMORY on out-of-memory error.
*
*********************************************************************/
jb_err cgi_show_client_tags(struct client_state *csp,
struct http_response *rsp,
const struct map *parameters)
{
struct map *exports;
struct client_tag_spec *this_tag;
jb_err err = JB_ERR_OK;
char *client_tag_status;
char buf[1000];
time_t refresh_delay;
assert(csp);
assert(rsp);
assert(parameters);
if (NULL == (exports = default_exports(csp, "client-tags")))
{
return JB_ERR_MEMORY;
}
assert(csp->client_address != NULL);
this_tag = csp->config->client_tags;
if (this_tag->name == NULL)
{
client_tag_status = strdup_or_die("<p>No tags have been configured.</p>\n");
}
else
{
client_tag_status = strdup_or_die("<table border=\"1\">\n"
"<tr><th>Tag name</th>\n"
"<th>Current state</th><th>Change state</th><th>Description</th></tr>\n");
while ((this_tag != NULL) && (this_tag->name != NULL))
{
int tag_state;
privoxy_mutex_lock(&client_tags_mutex);
tag_state = client_has_requested_tag(csp->client_address, this_tag->name);
privoxy_mutex_unlock(&client_tags_mutex);
if (!err) err = string_append(&client_tag_status, "<tr><td>");
if (!err) err = string_append(&client_tag_status, this_tag->name);
if (!err) err = string_append(&client_tag_status, "</td><td>");
if (!err) err = string_append(&client_tag_status, tag_state == 1 ? "Enabled" : "Disabled");
if (!err) err = string_append(&client_tag_status, "</td><td>");
cgi_create_client_tag_form(buf, sizeof(buf), this_tag->name, !tag_state, 1);
if (!err) err = string_append(&client_tag_status, buf);
if (tag_state == 0)
{
cgi_create_client_tag_form(buf, sizeof(buf), this_tag->name, !tag_state, 0);
if (!err) err = string_append(&client_tag_status, buf);
}
if (!err) err = string_append(&client_tag_status, "</td><td>");
if (!err) err = string_append(&client_tag_status, this_tag->description);
if (!err) err = string_append(&client_tag_status, "</td></tr>\n");
if (err)
{
break;
}
this_tag = this_tag->next;
}
if (!err) err = string_append(&client_tag_status, "</table>\n");
if (err)
{
free_map(exports);
return JB_ERR_MEMORY;
}
}
refresh_delay = get_next_tag_timeout_for_client(csp->client_address);
if (refresh_delay != 0)
{
snprintf(buf, sizeof(buf), "%u", csp->config->client_tag_lifetime);
if (map(exports, "refresh-delay", 1, buf, 1))
{
freez(client_tag_status);
free_map(exports);
return JB_ERR_MEMORY;
}
}
else
{
err = map_block_killer(exports, "tags-expire");
if (err != JB_ERR_OK)
{
freez(client_tag_status);
return err;
}
}
if (map(exports, "client-tags", 1, client_tag_status, 0))
{
free_map(exports);
return JB_ERR_MEMORY;
}
if (map(exports, "client-ip-addr", 1, csp->client_address, 1))
{
free_map(exports);
return JB_ERR_MEMORY;
}
return template_fill_for_cgi(csp, "client-tags", exports, rsp);
}
/*********************************************************************
*
* Function : cgi_toggle_client_tag
*
* Description : Toggles a client tag and redirects to the show-tags
* page
*
* Parameters :
* 1 : csp = Current client state (buffers, headers, etc...)
* 2 : rsp = http_response data structure for output
* 3 : parameters = map of cgi parameters
*
* CGI Parameters : none
* 1 : tag = Name of the tag to enable or disable
* 2 : toggle-state = How to toggle the tag (0/1)
* 3 : expires = Set to 1 if the tag should be enabled
* temporarily, otherwise set to 0
*
* Returns : JB_ERR_OK on success
* JB_ERR_MEMORY on out-of-memory error.
*
*********************************************************************/
jb_err cgi_toggle_client_tag(struct client_state *csp,
struct http_response *rsp,
const struct map *parameters)
{
const char *toggled_tag;
const char *toggle_state;
const char *tag_expires;
time_t time_to_live;
assert(csp);
assert(rsp);
assert(parameters);
toggled_tag = lookup(parameters, "tag");
if (*toggled_tag == '\0')
{
log_error(LOG_LEVEL_ERROR, "Received tag toggle request without tag");
}
else
{
tag_expires = lookup(parameters, "expires");
if (*tag_expires == '0')
{
time_to_live = 0;
}
else
{
time_to_live = csp->config->client_tag_lifetime;
}
toggle_state = lookup(parameters, "toggle-state");
if (*toggle_state == '1')
{
enable_client_specific_tag(csp, toggled_tag, time_to_live);
}
else
{
disable_client_specific_tag(csp, toggled_tag);
}
}
rsp->status = strdup_or_die("302 Done dealing with toggle request");
if (enlist_unique_header(rsp->headers,
"Location", CGI_PREFIX "client-tags"))
{
return JB_ERR_MEMORY;
}
return JB_ERR_OK;
}
#endif /* def FEATURE_CLIENT_TAGS */
/*********************************************************************
*
* Function : cgi_send_banner
*
* Description : CGI function that returns a banner.
*
* Parameters :
* 1 : csp = Current client state (buffers, headers, etc...)
* 2 : rsp = http_response data structure for output
* 3 : parameters = map of cgi parameters
*
* CGI Parameters :
* type : Selects the type of banner between "trans", "pattern",
* and "auto". Defaults to "pattern" if absent or invalid.
* "auto" means to select as if we were image-blocking.
* (Only the first character really counts; b and t are
* equivalent).
*
* Returns : JB_ERR_OK on success
* JB_ERR_MEMORY on out-of-memory error.
*
*********************************************************************/
jb_err cgi_send_banner(struct client_state *csp,
struct http_response *rsp,
const struct map *parameters)
{
char imagetype = lookup(parameters, "type")[0];
if (imagetype != 'a' && imagetype != 'b' &&
imagetype != 'p' && imagetype != 't')
{
log_error(LOG_LEVEL_ERROR, "Overruling invalid image type '%c'.",
imagetype);
imagetype = 'p';
}
/*
* If type is auto, then determine the right thing
* to do from the set-image-blocker action
*/
if (imagetype == 'a')
{
/*
* Default to pattern
*/
imagetype = 'p';
#ifdef FEATURE_IMAGE_BLOCKING
if ((csp->action->flags & ACTION_IMAGE_BLOCKER) != 0)
{
static const char prefix1[] = CGI_PREFIX "send-banner?type=";
static const char prefix2[] = "http://" CGI_SITE_1_HOST "/send-banner?type=";
const char *p = csp->action->string[ACTION_STRING_IMAGE_BLOCKER];
if (p == NULL)
{
/* Use default - nothing to do here. */
}
else if (0 == strcmpic(p, "blank"))
{
imagetype = 'b';
}
else if (0 == strcmpic(p, "pattern"))
{
imagetype = 'p';
}
/*
* If the action is to call this CGI, determine
* the argument:
*/
else if (0 == strncmpic(p, prefix1, sizeof(prefix1) - 1))
{
imagetype = p[sizeof(prefix1) - 1];
}
else if (0 == strncmpic(p, prefix2, sizeof(prefix2) - 1))
{
imagetype = p[sizeof(prefix2) - 1];
}
/*
* Everything else must (should) be a URL to
* redirect to.
*/
else
{
imagetype = 'r';
}
}
#endif /* def FEATURE_IMAGE_BLOCKING */
}
/*
* Now imagetype is either the non-auto type we were called with,
* or it was auto and has since been determined. In any case, we
* can proceed to actually answering the request by sending a redirect
* or an image as appropriate:
*/
if (imagetype == 'r')
{
rsp->status = strdup_or_die("302 Local Redirect from Privoxy");
if (enlist_unique_header(rsp->headers, "Location",
csp->action->string[ACTION_STRING_IMAGE_BLOCKER]))
{
return JB_ERR_MEMORY;
}
}
else
{
if ((imagetype == 'b') || (imagetype == 't'))
{
rsp->body = bindup(image_blank_data, image_blank_length);
rsp->content_length = image_blank_length;
}
else
{
rsp->body = bindup(image_pattern_data, image_pattern_length);
rsp->content_length = image_pattern_length;
}
if (rsp->body == NULL)
{
return JB_ERR_MEMORY;
}
if (enlist(rsp->headers, "Content-Type: " BUILTIN_IMAGE_MIMETYPE))
{
return JB_ERR_MEMORY;
}
rsp->is_static = 1;
}
return JB_ERR_OK;
}
/*********************************************************************
*
* Function : cgi_transparent_image
*
* Description : CGI function that sends a 1x1 transparent image.
*
* Parameters :
* 1 : csp = Current client state (buffers, headers, etc...)
* 2 : rsp = http_response data structure for output
* 3 : parameters = map of cgi parameters
*
* CGI Parameters : None
*
* Returns : JB_ERR_OK on success
* JB_ERR_MEMORY on out-of-memory error.
*
*********************************************************************/
jb_err cgi_transparent_image(struct client_state *csp,
struct http_response *rsp,
const struct map *parameters)
{
(void)csp;
(void)parameters;
rsp->body = bindup(image_blank_data, image_blank_length);
rsp->content_length = image_blank_length;
if (rsp->body == NULL)
{
return JB_ERR_MEMORY;
}
if (enlist(rsp->headers, "Content-Type: " BUILTIN_IMAGE_MIMETYPE))
{
return JB_ERR_MEMORY;
}
rsp->is_static = 1;
return JB_ERR_OK;
}
/*********************************************************************
*
* Function : cgi_send_default_favicon
*
* Description : CGI function that sends the standard favicon.
*
* Parameters :
* 1 : csp = Current client state (buffers, headers, etc...)
* 2 : rsp = http_response data structure for output
* 3 : parameters = map of cgi parameters
*
* CGI Parameters : None
*
* Returns : JB_ERR_OK on success
* JB_ERR_MEMORY on out-of-memory error.
*
*********************************************************************/
jb_err cgi_send_default_favicon(struct client_state *csp,
struct http_response *rsp,
const struct map *parameters)
{
static const char default_favicon_data[] =
"\000\000\001\000\001\000\020\020\002\000\000\000\000\000\260"
"\000\000\000\026\000\000\000\050\000\000\000\020\000\000\000"
"\040\000\000\000\001\000\001\000\000\000\000\000\100\000\000"
"\000\000\000\000\000\000\000\000\000\002\000\000\000\000\000"
"\000\000\377\377\377\000\377\000\052\000\017\360\000\000\077"
"\374\000\000\161\376\000\000\161\376\000\000\361\377\000\000"
"\361\377\000\000\360\017\000\000\360\007\000\000\361\307\000"
"\000\361\307\000\000\361\307\000\000\360\007\000\000\160\036"
"\000\000\177\376\000\000\077\374\000\000\017\360\000\000\360"
"\017\000\000\300\003\000\000\200\001\000\000\200\001\000\000"
"\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
"\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
"\000\000\200\001\000\000\200\001\000\000\300\003\000\000\360"
"\017\000\000";
static const size_t favicon_length = sizeof(default_favicon_data) - 1;
(void)csp;
(void)parameters;
rsp->body = bindup(default_favicon_data, favicon_length);
rsp->content_length = favicon_length;
if (rsp->body == NULL)
{
return JB_ERR_MEMORY;
}
if (enlist(rsp->headers, "Content-Type: image/x-icon"))
{
return JB_ERR_MEMORY;
}
rsp->is_static = 1;
return JB_ERR_OK;
}
/*********************************************************************
*
* Function : cgi_send_error_favicon
*
* Description : CGI function that sends the favicon for error pages.
*
* Parameters :
* 1 : csp = Current client state (buffers, headers, etc...)
* 2 : rsp = http_response data structure for output
* 3 : parameters = map of cgi parameters
*
* CGI Parameters : None
*
* Returns : JB_ERR_OK on success
* JB_ERR_MEMORY on out-of-memory error.
*
*********************************************************************/
jb_err cgi_send_error_favicon(struct client_state *csp,
struct http_response *rsp,
const struct map *parameters)
{
static const char error_favicon_data[] =
"\000\000\001\000\001\000\020\020\002\000\000\000\000\000\260"
"\000\000\000\026\000\000\000\050\000\000\000\020\000\000\000"
"\040\000\000\000\001\000\001\000\000\000\000\000\100\000\000"
"\000\000\000\000\000\000\000\000\000\002\000\000\000\000\000"
"\000\000\377\377\377\000\000\000\377\000\017\360\000\000\077"
"\374\000\000\161\376\000\000\161\376\000\000\361\377\000\000"
"\361\377\000\000\360\017\000\000\360\007\000\000\361\307\000"
"\000\361\307\000\000\361\307\000\000\360\007\000\000\160\036"
"\000\000\177\376\000\000\077\374\000\000\017\360\000\000\360"
"\017\000\000\300\003\000\000\200\001\000\000\200\001\000\000"
"\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
"\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
"\000\000\200\001\000\000\200\001\000\000\300\003\000\000\360"
"\017\000\000";
static const size_t favicon_length = sizeof(error_favicon_data) - 1;
(void)csp;
(void)parameters;
rsp->body = bindup(error_favicon_data, favicon_length);
rsp->content_length = favicon_length;
if (rsp->body == NULL)
{
return JB_ERR_MEMORY;
}
if (enlist(rsp->headers, "Content-Type: image/x-icon"))
{
return JB_ERR_MEMORY;
}
rsp->is_static = 1;
return JB_ERR_OK;
}
/*********************************************************************
*
* Function : cgi_send_stylesheet
*
* Description : CGI function that sends a css stylesheet found
* in the cgi-style.css template
*
* Parameters :
* 1 : csp = Current client state (buffers, headers, etc...)
* 2 : rsp = http_response data structure for output
* 3 : parameters = map of cgi parameters
*
* CGI Parameters : None
*
* Returns : JB_ERR_OK on success
* JB_ERR_MEMORY on out-of-memory error.
*
*********************************************************************/
jb_err cgi_send_stylesheet(struct client_state *csp,
struct http_response *rsp,
const struct map *parameters)
{
jb_err err;
assert(csp);
assert(rsp);
(void)parameters;
err = template_load(csp, &rsp->body, "cgi-style.css", 0);
if (err == JB_ERR_FILE)
{
/*
* No way to tell user; send empty stylesheet
*/
log_error(LOG_LEVEL_ERROR, "Could not find cgi-style.css template");
}
else if (err)
{
return err; /* JB_ERR_MEMORY */
}
if (enlist(rsp->headers, "Content-Type: text/css"))
{
return JB_ERR_MEMORY;
}
return JB_ERR_OK;
}
/*********************************************************************
*
* Function : cgi_send_wpad
*
* Description : CGI function that sends a Proxy Auto-Configuration
* (PAC) file.
*
* Parameters :
* 1 : csp = Current client state (buffers, headers, etc...)
* 2 : rsp = http_response data structure for output
* 3 : parameters = map of cgi parameters
*
* CGI Parameters : None
*
* Returns : JB_ERR_OK on success
* JB_ERR_MEMORY on out-of-memory error.
*
*********************************************************************/
jb_err cgi_send_wpad(struct client_state *csp,
struct http_response *rsp,
const struct map *parameters)
{
struct map *exports;
assert(csp);
assert(rsp);
assert(parameters);
if (NULL == (exports = default_exports(csp, NULL)))
{
return JB_ERR_MEMORY;
}
if (enlist(rsp->headers, "Content-Type: application/x-ns-proxy-autoconfig"))
{
free_map(exports);
return JB_ERR_MEMORY;
}
return template_fill_for_cgi(csp, "wpad.dat", exports, rsp);
}
/*********************************************************************
*
* Function : cgi_send_url_info_osd
*
* Description : CGI function that sends the OpenSearch Description
* template for the show-url-info page. It allows to
* access the page through "search engine plugins".
*
* Parameters :
* 1 : csp = Current client state (buffers, headers, etc...)
* 2 : rsp = http_response data structure for output
* 3 : parameters = map of cgi parameters
*
* CGI Parameters : None
*
* Returns : JB_ERR_OK on success
* JB_ERR_MEMORY on out-of-memory error.
*
*********************************************************************/
jb_err cgi_send_url_info_osd(struct client_state *csp,
struct http_response *rsp,
const struct map *parameters)
{
jb_err err = JB_ERR_MEMORY;
struct map *exports = default_exports(csp, NULL);
(void)csp;
(void)parameters;
if (NULL != exports)
{
err = template_fill_for_cgi(csp, "url-info-osd.xml", exports, rsp);
if (JB_ERR_OK == err)
{
err = enlist(rsp->headers,
"Content-Type: application/opensearchdescription+xml");
}
}
return err;
}
/*********************************************************************
*
* Function : get_content_type
*
* Description : Use the file extension to guess the content type
* header we should use to serve the file.
*
* Parameters :
* 1 : filename = Name of the file whose content type
* we care about
*
* Returns : The guessed content type.
*
*********************************************************************/
static const char *get_content_type(const char *filename)
{
int i;
struct content_type
{
const char extension[6];
const char content_type[11];
};
static const struct content_type content_types[] =
{
{".css", "text/css"},
{".jpg", "image/jpeg"},
{".jpeg", "image/jpeg"},
{".png", "image/png"},
};
for (i = 0; i < SZ(content_types); i++)
{
if (strstr(filename, content_types[i].extension))
{
return content_types[i].content_type;
}
}
/* No match by extension, default to html */
return "text/html";