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- /*********************************************************************
- *
- * File : $Source: /cvsroot/ijbswa/current/cgiedit.c,v $
- *
- * Purpose : CGI-based actionsfile editor.
- *
- * NOTE: The CGIs in this file use parameter names
- * such as "f" and "s" which are really *BAD* choices.
- * However, I'm trying to save bytes in the
- * edit-actions-list HTML page - the standard actions
- * file generated a 550kbyte page, which is ridiculous.
- *
- * Stick to the short names in this file for consistency.
- *
- * Copyright : Written by and Copyright (C) 2001-2014 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"
- /*
- * FIXME: Following includes copied from cgi.c - which are actually needed?
- */
- #include <stdio.h>
- #include <stdlib.h>
- #include <sys/types.h>
- #include <ctype.h>
- #include <string.h>
- #include <assert.h>
- #include <sys/stat.h>
- #include "project.h"
- #include "cgi.h"
- #include "cgiedit.h"
- #include "cgisimple.h"
- #include "list.h"
- #include "encode.h"
- #include "actions.h"
- #include "miscutil.h"
- #include "errlog.h"
- #include "loaders.h"
- #ifdef FEATURE_TOGGLE
- /* loadcfg.h is for global_toggle_state only */
- #include "loadcfg.h"
- #endif /* def FEATURE_TOGGLE */
- #include "urlmatch.h"
- #ifdef FEATURE_CGI_EDIT_ACTIONS
- /**
- * A line in an editable_file.
- */
- struct file_line
- {
- /** Next entry in the linked list */
- struct file_line * next;
- /** The raw data, to write out if this line is unmodified. */
- char * raw;
- /** Comments and/or whitespace to put before this line if it's modified
- and then written out. */
- char * prefix;
- /** The actual data, as a string. Line continuation and comment removal
- are performed on the data read from file before it's stored here, so
- it will be a single line of data. */
- char * unprocessed;
- /** The type of data on this line. One of the FILE_LINE_xxx constants. */
- int type;
- /** The actual data, processed into some sensible data type. */
- union
- {
- /** An action specification. */
- struct action_spec action[1];
- /** A name=value pair. */
- struct
- {
- /** The name in the name=value pair. */
- char * name;
- /** The value in the name=value pair, as a string. */
- char * svalue;
- /** The value in the name=value pair, as an integer. */
- int ivalue;
- } setting;
- } data;
- };
- /** This file_line has not been processed yet. */
- #define FILE_LINE_UNPROCESSED 1
- /** This file_line is blank. Can only appear at the end of a file, due to
- the way the parser works. */
- #define FILE_LINE_BLANK 2
- /** This file_line says {{alias}}. */
- #define FILE_LINE_ALIAS_HEADER 3
- /** This file_line defines an alias. */
- #define FILE_LINE_ALIAS_ENTRY 4
- /** This file_line defines an {action}. */
- #define FILE_LINE_ACTION 5
- /** This file_line specifies a URL pattern. */
- #define FILE_LINE_URL 6
- /** This file_line says {{settings}}. */
- #define FILE_LINE_SETTINGS_HEADER 7
- /** This file_line is in a {{settings}} block. */
- #define FILE_LINE_SETTINGS_ENTRY 8
- /** This file_line says {{description}}. */
- #define FILE_LINE_DESCRIPTION_HEADER 9
- /** This file_line is in a {{description}} block. */
- #define FILE_LINE_DESCRIPTION_ENTRY 10
- /*
- * Number of file modification time mismatches
- * before the CGI editor gets turned off.
- */
- #define ACCEPTABLE_TIMESTAMP_MISMATCHES 3
- /**
- * A configuration file, in a format that can be edited and written back to
- * disk.
- */
- struct editable_file
- {
- struct file_line * lines; /**< The contents of the file. A linked list of lines. */
- const char * filename; /**< Full pathname - e.g. "/etc/privoxy/wibble.action". */
- unsigned identifier; /**< The file name's position in csp->config->actions_file[]. */
- const char * version_str; /**< Last modification time, as a string. For CGI param. */
- /**< Can be used in URL without using url_param(). */
- unsigned version; /**< Last modification time - prevents chaos with
- the browser's "back" button. Note that this is a
- time_t cast to an unsigned. When comparing, always
- cast the time_t to an unsigned, and *NOT* vice-versa.
- This may lose the top few bits, but they're not
- significant anyway. */
- int newline; /**< Newline convention - one of the NEWLINE_xxx constants.
- Note that changing this after the file has been
- read in will cause a mess. */
- struct file_line * parse_error; /**< On parse error, this is the offending line. */
- const char * parse_error_text; /**< On parse error, this is the problem.
- (Statically allocated) */
- };
- /**
- * Information about the filter types.
- * Used for macro replacement in cgi_edit_actions_for_url.
- */
- struct filter_type_info
- {
- const int multi_action_index; /**< The multi action index as defined in project.h */
- const char *macro_name; /**< Name of the macro that has to be replaced
- with the prepared templates.
- For example "content-filter-params" */
- const char *type; /**< Name of the filter type,
- for example "server-header-filter". */
- /* XXX: check if these two can be combined. */
- const char *disable_all_option; /**< Name of the catch-all radio option that has
- to be checked or unchecked for this filter type. */
- const char *disable_all_param; /**< Name of the parameter that causes all filters of
- this type to be disabled. */
- const char *abbr_type; /**< Abbreviation of the filter type, usually the
- first or second character capitalized */
- const char *anchor; /**< Anchor for the User Manual link,
- for example "SERVER-HEADER-FILTER" */
- };
- /* Accessed by index, keep the order in the way the FT_ macros are defined. */
- static const struct filter_type_info filter_type_info[] =
- {
- {
- ACTION_MULTI_FILTER,
- "content-filter-params", "filter",
- "filter-all", "filter_all",
- "F", "FILTER"
- },
- {
- ACTION_MULTI_CLIENT_HEADER_FILTER,
- "client-header-filter-params", "client-header-filter",
- "client-header-filter-all", "client_header_filter_all",
- "C", "CLIENT-HEADER-FILTER"
- },
- {
- ACTION_MULTI_SERVER_HEADER_FILTER,
- "server-header-filter-params", "server-header-filter",
- "server-header-filter-all", "server_header_filter_all",
- "S", "SERVER-HEADER-FILTER"
- },
- {
- ACTION_MULTI_CLIENT_HEADER_TAGGER,
- "client-header-tagger-params", "client-header-tagger",
- "client-header-tagger-all", "client_header_tagger_all",
- "L", "CLIENT-HEADER-TAGGER"
- },
- {
- ACTION_MULTI_SERVER_HEADER_TAGGER,
- "server-header-tagger-params", "server-header-tagger",
- "server-header-tagger-all", "server_header_tagger_all",
- "E", "SERVER-HEADER-TAGGER"
- },
- #ifdef FEATURE_EXTERNAL_FILTERS
- {
- ACTION_MULTI_EXTERNAL_FILTER,
- "external-content-filter-params", "external-filter",
- "external-content-filter-all", "external_content_filter_all",
- "E", "EXTERNAL-CONTENT-FILTER"
- },
- #endif
- };
- /* FIXME: Following non-static functions should be prototyped in .h or made static */
- /* Functions to read and write arbitrary config files */
- jb_err edit_read_file(struct client_state *csp,
- const struct map *parameters,
- int require_version,
- struct editable_file **pfile);
- jb_err edit_write_file(struct editable_file * file);
- void edit_free_file(struct editable_file * file);
- /* Functions to read and write actions files */
- jb_err edit_parse_actions_file(struct editable_file * file);
- jb_err edit_read_actions_file(struct client_state *csp,
- struct http_response *rsp,
- const struct map *parameters,
- int require_version,
- struct editable_file **pfile);
- /* Error handlers */
- jb_err cgi_error_modified(struct client_state *csp,
- struct http_response *rsp,
- const char *filename);
- jb_err cgi_error_parse(struct client_state *csp,
- struct http_response *rsp,
- struct editable_file *file);
- jb_err cgi_error_file(struct client_state *csp,
- struct http_response *rsp,
- const char *filename);
- jb_err cgi_error_file_read_only(struct client_state *csp,
- struct http_response *rsp,
- const char *filename);
- /* Internal arbitrary config file support functions */
- static jb_err edit_read_file_lines(FILE *fp, struct file_line ** pfile, int *newline);
- static void edit_free_file_lines(struct file_line * first_line);
- /* Internal actions file support functions */
- static int match_actions_file_header_line(const char * line, const char * name);
- static jb_err split_line_on_equals(const char * line, char ** pname, char ** pvalue);
- /* Internal parameter parsing functions */
- static jb_err get_url_spec_param(struct client_state *csp,
- const struct map *parameters,
- const char *name,
- char **pvalue);
- /* Internal actionsfile <==> HTML conversion functions */
- static jb_err map_radio(struct map * exports,
- const char * optionname,
- const char * values,
- int value);
- static jb_err actions_to_radio(struct map * exports,
- const struct action_spec *action);
- static jb_err actions_from_radio(const struct map * parameters,
- struct action_spec *action);
- static jb_err map_copy_parameter_html(struct map *out,
- const struct map *in,
- const char *name);
- static jb_err get_file_name_param(struct client_state *csp,
- const struct map *parameters,
- const char *param_name,
- const char **pfilename);
- /* Internal convenience functions */
- static char *section_target(const unsigned sectionid);
- /*********************************************************************
- *
- * Function : section_target
- *
- * Description : Given an unsigned (section id) n, produce a dynamically
- * allocated string of the form #l<n>, for use in link
- * targets.
- *
- * XXX: The hash should be moved into the templates
- * to make this function more generic and render
- * stringify() obsolete.
- *
- * Parameters :
- * 1 : sectionid = start line number of section
- *
- * Returns : String with link target, or NULL if out of
- * memory
- *
- *********************************************************************/
- static char *section_target(const unsigned sectionid)
- {
- char buf[30];
- snprintf(buf, sizeof(buf), "#l%u", sectionid);
- return(strdup(buf));
- }
- /*********************************************************************
- *
- * Function : stringify
- *
- * Description : Convert a number into a dynamically allocated string.
- *
- * Parameters :
- * 1 : number = The number to convert.
- *
- * Returns : String with link target, or NULL if out of memory
- *
- *********************************************************************/
- static char *stringify(const unsigned number)
- {
- char buf[6];
- snprintf(buf, sizeof(buf), "%u", number);
- return strdup(buf);
- }
- /*********************************************************************
- *
- * Function : map_copy_parameter_html
- *
- * Description : Copy a CGI parameter from one map to another, HTML
- * encoding it.
- *
- * Parameters :
- * 1 : out = target map
- * 2 : in = source map
- * 3 : name = name of cgi parameter to copy
- *
- * Returns : JB_ERR_OK on success
- * JB_ERR_MEMORY on out-of-memory
- * JB_ERR_CGI_PARAMS if the parameter doesn't exist
- * in the source map
- *
- *********************************************************************/
- static jb_err map_copy_parameter_html(struct map *out,
- const struct map *in,
- const char *name)
- {
- const char * value;
- jb_err err;
- assert(out);
- assert(in);
- assert(name);
- value = lookup(in, name);
- err = map(out, name, 1, html_encode(value), 0);
- if (err)
- {
- /* Out of memory */
- return err;
- }
- else if (*value == '\0')
- {
- return JB_ERR_CGI_PARAMS;
- }
- else
- {
- return JB_ERR_OK;
- }
- }
- /*********************************************************************
- *
- * Function : cgi_edit_actions_url_form
- *
- * Description : CGI function that displays a form for
- * edit-actions-url
- *
- * 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
- * i : (action index) Identifies the file to edit
- * v : (version) File's last-modified time
- * p : (pattern) Line number of pattern to edit
- *
- * Returns : JB_ERR_OK on success
- * JB_ERR_MEMORY on out-of-memory
- * JB_ERR_CGI_PARAMS if the CGI parameters are not
- * specified or not valid.
- *
- *********************************************************************/
- jb_err cgi_edit_actions_url_form(struct client_state *csp,
- struct http_response *rsp,
- const struct map *parameters)
- {
- struct map * exports;
- unsigned patternid;
- struct editable_file * file;
- struct file_line * cur_line;
- unsigned line_number;
- unsigned section_start_line_number = 0;
- jb_err err;
- assert(csp);
- assert(rsp);
- assert(parameters);
- if (0 == (csp->config->feature_flags & RUNTIME_FEATURE_CGI_EDIT_ACTIONS))
- {
- return cgi_error_disabled(csp, rsp);
- }
- err = get_number_param(csp, parameters, "p", &patternid);
- if (err)
- {
- return err;
- }
- err = edit_read_actions_file(csp, rsp, parameters, 1, &file);
- if (err)
- {
- /* No filename specified, can't read file, modified, or out of memory. */
- return (err == JB_ERR_FILE ? JB_ERR_OK : err);
- }
- cur_line = file->lines;
- for (line_number = 1; (cur_line != NULL) && (line_number < patternid); line_number++)
- {
- if (cur_line->type == FILE_LINE_ACTION)
- {
- section_start_line_number = line_number;
- }
- cur_line = cur_line->next;
- }
- if ( (cur_line == NULL)
- || (line_number != patternid)
- || (patternid < 1U)
- || (cur_line->type != FILE_LINE_URL))
- {
- /* Invalid "patternid" parameter */
- edit_free_file(file);
- return JB_ERR_CGI_PARAMS;
- }
- if (NULL == (exports = default_exports(csp, NULL)))
- {
- edit_free_file(file);
- return JB_ERR_MEMORY;
- }
- err = map(exports, "f", 1, stringify(file->identifier), 0);
- if (!err) err = map(exports, "v", 1, file->version_str, 1);
- if (!err) err = map(exports, "p", 1, url_encode(lookup(parameters, "p")), 0);
- if (!err) err = map(exports, "u", 1, html_encode(cur_line->unprocessed), 0);
- if (!err) err = map(exports, "jumptarget", 1, section_target(section_start_line_number), 0);
- edit_free_file(file);
- if (err)
- {
- free_map(exports);
- return err;
- }
- return template_fill_for_cgi(csp, "edit-actions-url-form", exports, rsp);
- }
- /*********************************************************************
- *
- * Function : cgi_edit_actions_add_url_form
- *
- * Description : CGI function that displays a form for
- * edit-actions-url
- *
- * 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 :
- * f : (filename) Identifies the file to edit
- * v : (version) File's last-modified time
- * s : (section) Line number of section to edit
- *
- * Returns : JB_ERR_OK on success
- * JB_ERR_MEMORY on out-of-memory
- * JB_ERR_CGI_PARAMS if the CGI parameters are not
- * specified or not valid.
- *
- *********************************************************************/
- jb_err cgi_edit_actions_add_url_form(struct client_state *csp,
- struct http_response *rsp,
- const struct map *parameters)
- {
- struct map *exports;
- jb_err err;
- assert(csp);
- assert(rsp);
- assert(parameters);
- if (0 == (csp->config->feature_flags & RUNTIME_FEATURE_CGI_EDIT_ACTIONS))
- {
- return cgi_error_disabled(csp, rsp);
- }
- if (NULL == (exports = default_exports(csp, NULL)))
- {
- return JB_ERR_MEMORY;
- }
- err = map_copy_parameter_html(exports, parameters, "f");
- if (!err) err = map_copy_parameter_html(exports, parameters, "v");
- if (!err) err = map_copy_parameter_html(exports, parameters, "s");
- if (err)
- {
- free_map(exports);
- return err;
- }
- return template_fill_for_cgi(csp, "edit-actions-add-url-form", exports, rsp);
- }
- /*********************************************************************
- *
- * Function : cgi_edit_actions_remove_url_form
- *
- * Description : CGI function that displays a form for
- * edit-actions-url
- *
- * 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 :
- * f : (number) The action file identifier.
- * v : (version) File's last-modified time
- * p : (pattern) Line number of pattern to edit
- *
- * Returns : JB_ERR_OK on success
- * JB_ERR_MEMORY on out-of-memory
- * JB_ERR_CGI_PARAMS if the CGI parameters are not
- * specified or not valid.
- *
- *********************************************************************/
- jb_err cgi_edit_actions_remove_url_form(struct client_state *csp,
- struct http_response *rsp,
- const struct map *parameters)
- {
- struct map * exports;
- unsigned patternid;
- struct editable_file * file;
- struct file_line * cur_line;
- unsigned line_number;
- unsigned section_start_line_number = 0;
- jb_err err;
- assert(csp);
- assert(rsp);
- assert(parameters);
- if (0 == (csp->config->feature_flags & RUNTIME_FEATURE_CGI_EDIT_ACTIONS))
- {
- return cgi_error_disabled(csp, rsp);
- }
- err = get_number_param(csp, parameters, "p", &patternid);
- if (err)
- {
- return err;
- }
- err = edit_read_actions_file(csp, rsp, parameters, 1, &file);
- if (err)
- {
- /* No filename specified, can't read file, modified, or out of memory. */
- return (err == JB_ERR_FILE ? JB_ERR_OK : err);
- }
- cur_line = file->lines;
- for (line_number = 1; (cur_line != NULL) && (line_number < patternid); line_number++)
- {
- if (cur_line->type == FILE_LINE_ACTION)
- {
- section_start_line_number = line_number;
- }
- cur_line = cur_line->next;
- }
- if ( (cur_line == NULL)
- || (line_number != patternid)
- || (patternid < 1U)
- || (cur_line->type != FILE_LINE_URL))
- {
- /* Invalid "patternid" parameter */
- edit_free_file(file);
- return JB_ERR_CGI_PARAMS;
- }
- if (NULL == (exports = default_exports(csp, NULL)))
- {
- edit_free_file(file);
- return JB_ERR_MEMORY;
- }
- err = map(exports, "f", 1, stringify(file->identifier), 0);
- if (!err) err = map(exports, "v", 1, file->version_str, 1);
- if (!err) err = map(exports, "p", 1, url_encode(lookup(parameters, "p")), 0);
- if (!err) err = map(exports, "u", 1, html_encode(cur_line->unprocessed), 0);
- if (!err) err = map(exports, "jumptarget", 1, section_target(section_start_line_number), 0);
- if (!err) err = map(exports, "actions-file", 1, html_encode(file->filename), 0);
- edit_free_file(file);
- if (err)
- {
- free_map(exports);
- return err;
- }
- return template_fill_for_cgi(csp, "edit-actions-remove-url-form", exports, rsp);
- }
- /*********************************************************************
- *
- * Function : edit_write_file
- *
- * Description : Write a complete file to disk.
- *
- * Parameters :
- * 1 : file = File to write.
- *
- * Returns : JB_ERR_OK on success
- * JB_ERR_FILE on error writing to file.
- * JB_ERR_MEMORY on out of memory
- *
- *********************************************************************/
- jb_err edit_write_file(struct editable_file * file)
- {
- FILE * fp;
- struct file_line * cur_line;
- struct stat statbuf[1];
- char version_buf[22]; /* 22 = ceil(log10(2^64)) + 2 = max number of
- digits in time_t, assuming this is a 64-bit
- machine, plus null terminator, plus one
- for paranoia */
- assert(file);
- assert(file->filename);
- if (NULL == (fp = fopen(file->filename, "wb")))
- {
- return JB_ERR_FILE;
- }
- cur_line = file->lines;
- while (cur_line != NULL)
- {
- if (cur_line->raw)
- {
- if (fputs(cur_line->raw, fp) < 0)
- {
- fclose(fp);
- return JB_ERR_FILE;
- }
- }
- else
- {
- if (cur_line->prefix)
- {
- if (fputs(cur_line->prefix, fp) < 0)
- {
- fclose(fp);
- return JB_ERR_FILE;
- }
- }
- if (cur_line->unprocessed)
- {
- if (NULL != strchr(cur_line->unprocessed, '#'))
- {
- /* Must quote '#' characters */
- int numhash = 0;
- size_t len;
- char * src;
- char * dest;
- char * str;
- /* Count number of # characters, so we know length of output string */
- src = cur_line->unprocessed;
- while (NULL != (src = strchr(src, '#')))
- {
- numhash++;
- src++;
- }
- assert(numhash > 0);
- /* Allocate new memory for string */
- len = strlen(cur_line->unprocessed) + (size_t)numhash;
- str = malloc_or_die(len + 1);
- /* Copy string but quote hashes */
- src = cur_line->unprocessed;
- dest = str;
- while (*src)
- {
- if (*src == '#')
- {
- *dest++ = '\\';
- numhash--;
- assert(numhash >= 0);
- }
- *dest++ = *src++;
- }
- *dest = '\0';
- assert(numhash == 0);
- assert(strlen(str) == len);
- assert(str == dest - len);
- assert(src - len <= cur_line->unprocessed);
- if ((strlen(str) != len) || (numhash != 0))
- {
- /*
- * Escaping didn't work as expected, go spread the news.
- * Only reached in non-debugging builds.
- */
- log_error(LOG_LEVEL_ERROR,
- "Looks like hash escaping failed. %s might be corrupted now.",
- file->filename);
- }
- if (fputs(str, fp) < 0)
- {
- free(str);
- fclose(fp);
- return JB_ERR_FILE;
- }
- free(str);
- }
- else
- {
- /* Can write without quoting '#' characters. */
- if (fputs(cur_line->unprocessed, fp) < 0)
- {
- fclose(fp);
- return JB_ERR_FILE;
- }
- }
- if (fputs(NEWLINE(file->newline), fp) < 0)
- {
- fclose(fp);
- return JB_ERR_FILE;
- }
- }
- else
- {
- /* FIXME: Write data from file->data->whatever */
- assert(0);
- }
- }
- cur_line = cur_line->next;
- }
- fclose(fp);
- /* Update the version stamp in the file structure, since we just
- * wrote to the file & changed it's date.
- */
- if (stat(file->filename, statbuf) < 0)
- {
- /* Error, probably file not found. */
- return JB_ERR_FILE;
- }
- file->version = (unsigned)statbuf->st_mtime;
- /* Correct file->version_str */
- freez(file->version_str);
- snprintf(version_buf, sizeof(version_buf), "%u", file->version);
- version_buf[sizeof(version_buf)-1] = '\0';
- file->version_str = strdup_or_die(version_buf);
- return JB_ERR_OK;
- }
- /*********************************************************************
- *
- * Function : edit_free_file
- *
- * Description : Free a complete file in memory.
- *
- * Parameters :
- * 1 : file = Data structure to free.
- *
- * Returns : N/A
- *
- *********************************************************************/
- void edit_free_file(struct editable_file * file)
- {
- if (!file)
- {
- /* Silently ignore NULL pointer */
- return;
- }
- edit_free_file_lines(file->lines);
- freez(file->version_str);
- file->version = 0;
- file->parse_error_text = NULL; /* Statically allocated */
- file->parse_error = NULL;
- free(file);
- }
- /*********************************************************************
- *
- * Function : edit_free_file_lines
- *
- * Description : Free an entire linked list of file lines.
- *
- * Parameters :
- * 1 : first_line = Data structure to free.
- *
- * Returns : N/A
- *
- *********************************************************************/
- static void edit_free_file_lines(struct file_line * first_line)
- {
- struct file_line * next_line;
- while (first_line != NULL)
- {
- next_line = first_line->next;
- first_line->next = NULL;
- freez(first_line->raw);
- freez(first_line->prefix);
- freez(first_line->unprocessed);
- switch(first_line->type)
- {
- case 0: /* special case if memory zeroed */
- case FILE_LINE_UNPROCESSED:
- case FILE_LINE_BLANK:
- case FILE_LINE_ALIAS_HEADER:
- case FILE_LINE_SETTINGS_HEADER:
- case FILE_LINE_DESCRIPTION_HEADER:
- case FILE_LINE_DESCRIPTION_ENTRY:
- case FILE_LINE_ALIAS_ENTRY:
- case FILE_LINE_URL:
- /* No data is stored for these */
- break;
- case FILE_LINE_ACTION:
- free_action(first_line->data.action);
- break;
- case FILE_LINE_SETTINGS_ENTRY:
- freez(first_line->data.setting.name);
- freez(first_line->data.setting.svalue);
- break;
- default:
- /* Should never happen */
- assert(0);
- break;
- }
- first_line->type = 0; /* paranoia */
- free(first_line);
- first_line = next_line;
- }
- }
- /*********************************************************************
- *
- * Function : match_actions_file_header_line
- *
- * Description : Match an actions file {{header}} line
- *
- * Parameters :
- * 1 : line = String from file
- * 2 : name = Header to match against
- *
- * Returns : 0 iff they match.
- *
- *********************************************************************/
- static int match_actions_file_header_line(const char * line, const char * name)
- {
- size_t len;
- assert(line);
- assert(name);
- /* Look for "{{" */
- if ((line[0] != '{') || (line[1] != '{'))
- {
- return 1;
- }
- line += 2;
- /* Look for optional whitespace */
- while ((*line == ' ') || (*line == '\t'))
- {
- line++;
- }
- /* Look for the specified name (case-insensitive) */
- len = strlen(name);
- if (0 != strncmpic(line, name, len))
- {
- return 1;
- }
- line += len;
- /* Look for optional whitespace */
- while ((*line == ' ') || (*line == '\t'))
- {
- line++;
- }
- /* Look for "}}" and end of string*/
- if ((line[0] != '}') || (line[1] != '}') || (line[2] != '\0'))
- {
- return 1;
- }
- /* It matched!! */
- return 0;
- }
- /*********************************************************************
- *
- * Function : match_actions_file_header_line
- *
- * Description : Match an actions file {{header}} line
- *
- * Parameters :
- * 1 : line = String from file. Must not start with
- * whitespace (else infinite loop!)
- * 2 : pname = Destination for name
- * 2 : pvalue = Destination for value
- *
- * Returns : JB_ERR_OK on success
- * JB_ERR_MEMORY on out-of-memory
- * JB_ERR_PARSE if there's no "=" sign, or if there's
- * nothing before the "=" sign (but empty
- * values *after* the "=" sign are legal).
- *
- *********************************************************************/
- static jb_err split_line_on_equals(const char * line, char ** pname, char ** pvalue)
- {
- const char * name_end;
- const char * value_start;
- size_t name_len;
- assert(line);
- assert(pname);
- assert(pvalue);
- assert(*line != ' ');
- assert(*line != '\t');
- *pname = NULL;
- *pvalue = NULL;
- value_start = strchr(line, '=');
- if ((value_start == NULL) || (value_start == line))
- {
- return JB_ERR_PARSE;
- }
- name_end = value_start - 1;
- /* Eat any whitespace before the '=' */
- while ((*name_end == ' ') || (*name_end == '\t'))
- {
- /*
- * we already know we must have at least 1 non-ws char
- * at start of buf - no need to check
- */
- name_end--;
- }
- name_len = (size_t)(name_end - line) + 1; /* Length excluding \0 */
- *pname = malloc_or_die(name_len + 1);
- strncpy(*pname, line, name_len);
- (*pname)[name_len] = '\0';
- /* Eat any the whitespace after the '=' */
- value_start++;
- while ((*value_start == ' ') || (*value_start == '\t'))
- {
- value_start++;
- }
- if (NULL == (*pvalue = strdup(value_start)))
- {
- free(*pname);
- *pname = NULL;
- return JB_ERR_MEMORY;
- }
- return JB_ERR_OK;
- }
- /*********************************************************************
- *
- * Function : edit_parse_actions_file
- *
- * Description : Parse an actions file in memory.
- *
- * Passed linked list must have the "data" member
- * zeroed, and must contain valid "next" and
- * "unprocessed" fields. The "raw" and "prefix"
- * fields are ignored, and "type" is just overwritten.
- *
- * Note that on error the file may have been
- * partially parsed.
- *
- * Parameters :
- * 1 : file = Actions file to be parsed in-place.
- *
- * Returns : JB_ERR_OK on success
- * JB_ERR_MEMORY on out-of-memory
- * JB_ERR_PARSE on error
- *
- *********************************************************************/
- jb_err edit_parse_actions_file(struct editable_file * file)
- {
- struct file_line * cur_line;
- size_t len;
- const char * text; /* Text from a line */
- char * name; /* For lines of the form name=value */
- char * value; /* For lines of the form name=value */
- struct action_alias * alias_list = NULL;
- jb_err err = JB_ERR_OK;
- /* alias_list contains the aliases defined in this file.
- * It might be better to use the "file_line.data" fields
- * in the relevant places instead.
- */
- cur_line = file->lines;
- /* A note about blank line support: Blank lines should only
- * ever occur as the last line in the file. This function
- * is more forgiving than that - FILE_LINE_BLANK can occur
- * anywhere.
- */
- /* Skip leading blanks. Should only happen if file is
- * empty (which is valid, but pointless).
- */
- while ((cur_line != NULL)
- && (cur_line->unprocessed[0] == '\0'))
- {
- /* Blank line */
- cur_line->type = FILE_LINE_BLANK;
- cur_line = cur_line->next;
- }
- if ((cur_line != NULL)
- && (cur_line->unprocessed[0] != '{'))
- {
- /* File doesn't start with a header */
- file->parse_error = cur_line;
- file->parse_error_text = "First (non-comment) line of the file must contain a header.";
- return JB_ERR_PARSE;
- }
- if ((cur_line != NULL) && (0 ==
- match_actions_file_header_line(cur_line->unprocessed, "settings")))
- {
- cur_line->type = FILE_LINE_SETTINGS_HEADER;
- cur_line = cur_line->next;
- while ((cur_line != NULL) && (cur_line->unprocessed[0] != '{'))
- {
- if (cur_line->unprocessed[0])
- {
- cur_line->type = FILE_LINE_SETTINGS_ENTRY;
- err = split_line_on_equals(cur_line->unprocessed,
- &cur_line->data.setting.name,
- &cur_line->data.setting.svalue);
- if (err == JB_ERR_MEMORY)
- {
- return err;
- }
- else if (err != JB_ERR_OK)
- {
- /* Line does not contain a name=value pair */
- file->parse_error = cur_line;
- file->parse_error_text = "Expected a name=value pair on this {{description}} line, but couldn't find one.";
- return JB_ERR_PARSE;
- }
- }
- else
- {
- cur_line->type = FILE_LINE_BLANK;
- }
- cur_line = cur_line->next;
- }
- }
- if ((cur_line != NULL) && (0 ==
- match_actions_file_header_line(cur_line->unprocessed, "description")))
- {
- cur_line->type = FILE_LINE_DESCRIPTION_HEADER;
- cur_line = cur_line->next;
- while ((cur_line != NULL) && (cur_line->unprocessed[0] != '{'))
- {
- if (cur_line->unprocessed[0])
- {
- cur_line->type = FILE_LINE_DESCRIPTION_ENTRY;
- }
- else
- {
- cur_line->type = FILE_LINE_BLANK;
- }
- cur_line = cur_line->next;
- }
- }
- if ((cur_line != NULL) && (0 ==
- match_actions_file_header_line(cur_line->unprocessed, "alias")))
- {
- cur_line->type = FILE_LINE_ALIAS_HEADER;
- cur_line = cur_line->next;
- while ((cur_line != NULL) && (cur_line->unprocessed[0] != '{'))
- {
- if (cur_line->unprocessed[0])
- {
- /* define an alias */
- struct action_alias * new_alias;
- cur_line->type = FILE_LINE_ALIAS_ENTRY;
- err = split_line_on_equals(cur_line->unprocessed, &name, &value);
- if (err == JB_ERR_MEMORY)
- {
- free_alias_list(alias_list);
- return err;
- }
- else if (err != JB_ERR_OK)
- {
- /* Line does not contain a name=value pair */
- file->parse_error = cur_line;
- file->parse_error_text = "Expected a name=value pair on this {{alias}} line, but couldn't find one.";
- free_alias_list(alias_list);
- return JB_ERR_PARSE;
- }
- new_alias = zalloc_or_die(sizeof(*new_alias));
- err = get_actions(value, alias_list, new_alias->action);
- if (err)
- {
- /* Invalid action or out of memory */
- free(name);
- free(value);
- free(new_alias);
- free_alias_list(alias_list);
- if (err == JB_ERR_MEMORY)
- {
- return err;
- }
- else
- {
- /* Line does not contain a name=value pair */
- file->parse_error = cur_line;
- file->parse_error_text = "This alias does not specify a valid set of actions.";
- return JB_ERR_PARSE;
- }
- }
- free(value);
- new_alias->name = name;
- /* add to list */
- new_alias->next = alias_list;
- alias_list = new_alias;
- }
- else
- {
- cur_line->type = FILE_LINE_BLANK;
- }
- cur_line = cur_line->next;
- }
- }
- /* Header done, process the main part of the file */
- while (cur_line != NULL)
- {
- /* At this point, (cur_line->unprocessed[0] == '{') */
- assert(cur_line->unprocessed[0] == '{');
- text = cur_line->unprocessed + 1;
- len = strlen(text) - 1;
- if (text[len] != '}')
- {
- /* No closing } on header */
- free_alias_list(alias_list);
- file->parse_error = cur_line;
- file->parse_error_text = "Headers starting with '{' must have a "
- "closing bracket ('}'). Headers starting with two brackets ('{{') "
- "must close with two brackets ('}}').";
- return JB_ERR_PARSE;
- }
- if (text[0] == '{')
- {
- /* An invalid {{ header. */
- free_alias_list(alias_list);
- file->parse_error = cur_line;
- file->parse_error_text = "Unknown or unexpected two-bracket header. "
- "Please remember that the system (two-bracket) headers must "
- "appear in the order {{settings}}, {{description}}, {{alias}}, "
- "and must appear before any actions (one-bracket) headers. "
- "Also note that system headers may not be repeated.";
- return JB_ERR_PARSE;
- }
- while ((*text == ' ') || (*text == '\t'))
- {
- text++;
- len--;
- }
- while ((len > (size_t)0)
- && ((text[len - 1] == ' ')
- || (text[len - 1] == '\t')))
- {
- len--;
- }
- cur_line->type = FILE_LINE_ACTION;
- /* Remove {} and make copy */
- value = malloc_or_die(len + 1);
- strncpy(value, text, len);
- value[len] = '\0';
- /* Get actions */
- err = get_actions(value, alias_list, cur_line->data.action);
- if (err)
- {
- /* Invalid action or out of memory */
- free(value);
- free_alias_list(alias_list);
- if (err == JB_ERR_MEMORY)
- {
- return err;
- }
- else
- {
- /* Line does not contain a name=value pair */
- file->parse_error = cur_line;
- file->parse_error_text = "This header does not specify a valid set of actions.";
- return JB_ERR_PARSE;
- }
- }
- /* Done with string - it was clobbered anyway */
- free(value);
- /* Process next line */
- cur_line = cur_line->next;
- /* Loop processing URL patterns */
- while ((cur_line != NULL) && (cur_line->unprocessed[0] != '{'))
- {
- if (cur_line->unprocessed[0])
- {
- /* Could parse URL here, but this isn't currently needed */
- cur_line->type = FILE_LINE_URL;
- }
- else
- {
- cur_line->type = FILE_LINE_BLANK;
- }
- cur_line = cur_line->next;
- }
- } /* End main while(cur_line != NULL) loop */
- free_alias_list(alias_list);
- return JB_ERR_OK;
- }
- /*********************************************************************
- *
- * Function : edit_read_file_lines
- *
- * Description : Read all the lines of a file into memory.
- * Handles whitespace, comments and line continuation.
- *
- * Parameters :
- * 1 : fp = File to read from. On return, this will be
- * at EOF but it will not have been closed.
- * 2 : pfile = Destination for a linked list of file_lines.
- * Will be set to NULL on error.
- * 3 : newline = How to handle newlines.
- *
- * Returns : JB_ERR_OK on success
- * JB_ERR_MEMORY on out-of-memory
- *
- *********************************************************************/
- jb_err edit_read_file_lines(FILE *fp, struct file_line ** pfile, int *newline)
- {
- struct file_line * first_line; /* Keep for return value or to free */
- struct file_line * cur_line; /* Current line */
- struct file_line * prev_line; /* Entry with prev_line->next = cur_line */
- jb_err rval;
- assert(fp);
- assert(pfile);
- *pfile = NULL;
- cur_line = first_line = zalloc_or_die(sizeof(struct file_line));
- cur_line->type = FILE_LINE_UNPROCESSED;
- rval = edit_read_line(fp, &cur_line->raw, &cur_line->prefix, &cur_line->unprocessed, newline, NULL);
- if (rval)
- {
- /* Out of memory or empty file. */
- /* Note that empty file is not an error we propagate up */
- free(cur_line);
- return ((rval == JB_ERR_FILE) ? JB_ERR_OK : rval);
- }
- do
- {
- prev_line = cur_line;
- cur_line = prev_line->next = zalloc_or_die(sizeof(struct file_line));
- cur_line->type = FILE_LINE_UNPROCESSED;
- rval = edit_read_line(fp, &cur_line->raw, &cur_line->prefix, &cur_line->unprocessed, newline, NULL);
- if ((rval != JB_ERR_OK) && (rval != JB_ERR_FILE))
- {
- /* Out of memory */
- edit_free_file_lines(first_line);
- return JB_ERR_MEMORY;
- }
- }
- while (rval != JB_ERR_FILE);
- /* EOF */
- /* We allocated one too many - free it */
- prev_line->next = NULL;
- free(cur_line);
- *pfile = first_line;
- return JB_ERR_OK;
- }
- /*********************************************************************
- *
- * Function : edit_read_file
- *
- * Description : Read a complete file into memory.
- * Handles CGI parameter parsing. If requested, also
- * checks the file's modification timestamp.
- *
- * Parameters :
- * 1 : csp = Current client state (buffers, headers, etc...)
- * 2 : parameters = map of cgi parameters.
- * 3 : require_version = true to check "ver" parameter.
- * 4 : pfile = Destination for the file. Will be set
- * to NULL on error.
- *
- * CGI Parameters :
- * f : The action file identifier.
- * ver : (Only if require_version is nonzero)
- * Timestamp of the actions file. If wrong, this
- * function fails with JB_ERR_MODIFIED.
- *
- * Returns : JB_ERR_OK on success
- * JB_ERR_MEMORY on out-of-memory
- * JB_ERR_CGI_PARAMS if "filename" was not specified
- * or is not valid.
- * JB_ERR_FILE if the file cannot be opened or
- * contains no data
- * JB_ERR_MODIFIED if version checking was requested and
- * failed - the file was modified outside
- * of this CGI editor instance.
- *
- *********************************************************************/
- jb_err edit_read_file(struct client_state *csp,
- const struct map *parameters,
- int require_version,
- struct editable_file **pfile)
- {
- struct file_line * lines;
- FILE * fp;
- jb_err err;
- const char *filename = NULL;
- struct editable_file * file;
- unsigned version = 0;
- struct stat statbuf[1];
- char version_buf[22];
- int newline = NEWLINE_UNKNOWN;
- unsigned i;
- assert(csp);
- assert(parameters);
- assert(pfile);
- *pfile = NULL;
- err = get_number_param(csp, parameters, "f", &i);
- if ((JB_ERR_OK == err) && (i < MAX_AF_FILES) && (NULL != csp->config->actions_file[i]))
- {
- filename = csp->config->actions_file[i];
- }
- else if (JB_ERR_CGI_PARAMS == err)
- {
- /*
- * Probably an old-school URL like
- * http://config.privoxy.org/edit-actions-list?f=default
- */
- get_file_name_param(csp, parameters, "f", &filename);
- }
- if (NULL == filename || stat(filename, statbuf) < 0)
- {
- /* Error, probably file not found. */
- return JB_ERR_FILE;
- }
- version = (unsigned) statbuf->st_mtime;
- if (require_version)
- {
- unsigned specified_version;
- err = get_number_param(csp, parameters, "v", &specified_version);
- if (err)
- {
- return err;
- }
- if (version != specified_version)
- {
- return JB_ERR_MODIFIED;
- }
- }
- if (NULL == (fp = fopen(filename,"rb")))
- {
- return JB_ERR_FILE;
- }
- err = edit_read_file_lines(fp, &lines, &newline);
- fclose(fp);
- if (err)
- {
- return err;
- }
- file = zalloc_or_die(sizeof(*file));
- file->lines = lines;
- file->newline = newline;
- file->filename = filename;
- file->version = version;
- file->identifier = i;
- /* Correct file->version_str */
- freez(file->version_str);
- snprintf(version_buf, sizeof(version_buf), "%u", file->version);
- version_buf[sizeof(version_buf)-1] = '\0';
- file->version_str = strdup_or_die(version_buf);
- *pfile = file;
- return JB_ERR_OK;
- }
- /*********************************************************************
- *
- * Function : edit_read_actions_file
- *
- * Description : Read a complete actions file into memory.
- * Handles CGI parameter parsing. If requested, also
- * checks the file's modification timestamp.
- *
- * If this function detects an error in the categories
- * JB_ERR_FILE, JB_ERR_MODIFIED, or JB_ERR_PARSE,
- * then it handles it by filling in the specified
- * response structure and returning JB_ERR_FILE.
- *
- * Parameters :
- * 1 : csp = Current client state (buffers, headers, etc...)
- * 2 : rsp = HTTP response. Only filled in on error.
- * 2 : parameters = map of cgi parameters.
- * 3 : require_version = true to check "ver" parameter.
- * 4 : pfile = Destination for the file. Will be set
- * to NULL on error.
- *
- * CGI Parameters :
- * f : The actions file identifier.
- * ver : (Only if require_version is nonzero)
- * Timestamp of the actions file. If wrong, this
- * function fails with JB_ERR_MODIFIED.
- *
- * Returns : JB_ERR_OK on success
- * JB_ERR_MEMORY on out-of-memory
- * JB_ERR_CGI_PARAMS if "filename" was not specified
- * or is not valid.
- * JB_ERR_FILE if the file does not contain valid data,
- * or if file cannot be opened or
- * contains no data, or if version
- * checking was requested and failed.
- *
- *********************************************************************/
- jb_err edit_read_actions_file(struct client_state *csp,
- struct http_response *rsp,
- const struct map *parameters,
- int require_version,
- struct editable_file **pfile)
- {
- jb_err err;
- struct editable_file *file;
- static int acceptable_failures = ACCEPTABLE_TIMESTAMP_MISMATCHES - 1;
- assert(csp);
- assert(parameters);
- assert(pfile);
- *pfile = NULL;
- err = edit_read_file(csp, parameters, require_version, &file);
- if (err)
- {
- /* Try to handle if possible */
- if (err == JB_ERR_FILE)
- {
- err = cgi_error_file(csp, rsp, lookup(parameters, "f"));
- }
- else if (err == JB_ERR_MODIFIED)
- {
- assert(require_version);
- err = cgi_error_modified(csp, rsp, lookup(parameters, "f"));
- log_error(LOG_LEVEL_ERROR,
- "Blocking CGI edit request due to modification time mismatch.");
- if (acceptable_failures > 0)
- {
- log_error(LOG_LEVEL_INFO,
- "The CGI editor will be turned off after another %d mismatche(s).",
- acceptable_failures);
- acceptable_failures--;
- }
- else
- {
- log_error(LOG_LEVEL_INFO,
- "Timestamp mismatch limit reached, turning CGI editor off. "
- "Reload the configuration file to re-enable it.");
- csp->config->feature_flags &= ~RUNTIME_FEATURE_CGI_EDIT_ACTIONS;
- }
- }
- if (err == JB_ERR_OK)
- {
- /*
- * Signal to higher-level CGI code that there was a problem but we
- * handled it, they should just return JB_ERR_OK.
- */
- err = JB_ERR_FILE;
- }
- return err;
- }
- err = edit_parse_actions_file(file);
- if (err)
- {
- if (err == JB_ERR_PARSE)
- {
- err = cgi_error_parse(csp, rsp, file);
- if (err == JB_ERR_OK)
- {
- /*
- * Signal to higher-level CGI code that there was a problem but we
- * handled it, they should just return JB_ERR_OK.
- */
- err = JB_ERR_FILE;
- }
- }
- edit_free_file(file);
- return err;
- }
- *pfile = file;
- return JB_ERR_OK;
- }
- /*********************************************************************
- *
- * Function : get_file_name_param
- *
- * Description : Get the name of the file to edit from the parameters
- * passed to a CGI function using the old syntax.
- * This function handles security checks and only
- * accepts files that Privoxy already knows.
- *
- * Parameters :
- * 1 : csp = Current client state (buffers, headers, etc...)
- * 2 : parameters = map of cgi parameters
- * 3 : param_name = The name of the parameter to read
- * 4 : pfilename = pointer to the filename in
- * csp->config->actions_file[] if found. Set to NULL on error.
- *
- * Returns : JB_ERR_OK on success
- * JB_ERR_MEMORY on out-of-memory
- * JB_ERR_CGI_PARAMS if "filename" was not specified
- * or is not valid.
- *
- *********************************************************************/
- static jb_err get_file_name_param(struct client_state *csp,
- const struct map *parameters,
- const char *param_name,
- const char **pfilename)
- {
- const char *param;
- const char suffix[] = ".action";
- const char *s;
- char *name;
- char *fullpath;
- char ch;
- size_t len;
- size_t name_size;
- int i;
- assert(csp);
- assert(parameters);
- assert(pfilename);
- *pfilename = NULL;
- param = lookup(parameters, param_name);
- if (!*param)
- {
- return JB_ERR_CGI_PARAMS;
- }
- len = strlen(param);
- if (len >= FILENAME_MAX)
- {
- /* Too long. */
- return JB_ERR_CGI_PARAMS;
- }
- /*
- * Check every character to see if it's legal.
- * Totally unnecessary but we do it anyway.
- */
- s = param;
- while ((ch = *s++) != '\0')
- {
- if ( ((ch < 'A') || (ch > 'Z'))
- && ((ch < 'a') || (ch > 'z'))
- && ((ch < '0') || (ch > '9'))
- && (ch != '-')
- && (ch != '_'))
- {
- /* Probable hack attempt. */
- return JB_ERR_CGI_PARAMS;
- }
- }
- /* Append extension */
- name_size = len + strlen(suffix) + 1;
- name = malloc_or_die(name_size);
- strlcpy(name, param, name_size);
- strlcat(name, suffix, name_size);
- /* Prepend path */
- fullpath = make_path(csp->config->confdir, name);
- free(name);
- if (fullpath == NULL)
- {
- return JB_ERR_MEMORY;
- }
- /* Check if the file is known */
- for (i = 0; i < MAX_AF_FILES; i++)
- {
- if (NULL != csp->config->actions_file[i] &&
- !strcmp(fullpath, csp->config->actions_file[i]))
- {
- /* Success */
- *pfilename = csp->config->actions_file[i];
- freez(fullpath);
- return JB_ERR_OK;
- }
- }
- freez(fullpath);
- return JB_ERR_CGI_PARAMS;
- }
- /*********************************************************************
- *
- * Function : get_url_spec_param
- *
- * Description : Get a URL pattern from the parameters
- * passed to a CGI function. Removes leading/trailing
- * spaces and validates it.
- *
- * Parameters :
- * 1 : csp = Current client state (buffers, headers, etc...)
- * 2 : parameters = map of cgi parameters
- * 3 : name = Name of CGI parameter to read
- * 4 : pvalue = destination for value. Will be malloc()'d.
- * Set to NULL on error.
- *
- * Returns : JB_ERR_OK on success
- * JB_ERR_MEMORY on out-of-memory
- * JB_ERR_CGI_PARAMS if the parameter was not specified
- * or is not valid.
- *
- *********************************************************************/
- static jb_err get_url_spec_param(struct client_state *csp,
- const struct map *parameters,
- const char *name,
- char **pvalue)
- {
- const char *orig_param;
- char *param;
- char *s;
- struct pattern_spec compiled[1];
- jb_err err;
- assert(csp);
- assert(parameters);
- assert(name);
- assert(pvalue);
- *pvalue = NULL;
- orig_param = lookup(parameters, name);
- if (!*orig_param)
- {
- return JB_ERR_CGI_PARAMS;
- }
- /* Copy and trim whitespace */
- param = strdup(orig_param);
- if (param == NULL)
- {
- return JB_ERR_MEMORY;
- }
- chomp(param);
- /* Must be non-empty, and can't allow 1st character to be '{' */
- if (param[0] == '\0' || param[0] == '{')
- {
- free(param);
- return JB_ERR_CGI_PARAMS;
- }
- /* Check for embedded newlines */
- for (s = param; *s != '\0'; s++)
- {
- if ((*s == '\r') || (*s == '\n'))
- {
- free(param);
- return JB_ERR_CGI_PARAMS;
- }
- }
- /* Check that regex is valid */
- s = strdup(param);
- if (s == NULL)
- {
- free(param);
- return JB_ERR_MEMORY;
- }
- err = create_pattern_spec(compiled, s);
- free(s);
- if (err)
- {
- free(param);
- return (err == JB_ERR_MEMORY) ? JB_ERR_MEMORY : JB_ERR_CGI_PARAMS;
- }
- free_pattern_spec(compiled);
- if (param[strlen(param) - 1] == '\\')
- {
- /*
- * Must protect trailing '\\' from becoming line continuation character.
- * Two methods: 1) If it's a domain only, add a trailing '/'.
- * 2) For path, add the do-nothing PCRE expression (?:) to the end
- */
- if (strchr(param, '/') == NULL)
- {
- err = string_append(¶m, "/");
- }
- else
- {
- err = string_append(¶m, "(?:)");
- }
- if (err)
- {
- return err;
- }
- /* Check that the modified regex is valid */
- s = strdup(param);
- if (s == NULL)
- {
- free(param);
- return JB_ERR_MEMORY;
- }
- err = create_pattern_spec(compiled, s);
- free(s);
- if (err)
- {
- free(param);
- return (err == JB_ERR_MEMORY) ? JB_ERR_MEMORY : JB_ERR_CGI_PARAMS;
- }
- free_pattern_spec(compiled);
- }
- *pvalue = param;
- return JB_ERR_OK;
- }
- /*********************************************************************
- *
- * Function : map_radio
- *
- * Description : Map a set of radio button values. E.g. if you have
- * 3 radio buttons, declare them as:
- * <option type="radio" name="xyz" @xyz-a@>
- * <option type="radio" name="xyz" @xyz-b@>
- * <option type="radio" name="xyz" @xyz-c@>
- * Then map one of the @xyz-?@ variables to "checked"
- * and all the others to empty by calling:
- * map_radio(exports, "xyz", "abc", sel)
- * Where 'sel' is 'a', 'b', or 'c'.
- *
- * Parameters :
- * 1 : exports = Exports map to modify.
- * 2 : optionname = name for map
- * 3 : values = null-terminated list of values;
- * 4 : value = Selected value.
- *
- * CGI Parameters : None
- *
- * Returns : JB_ERR_OK on success
- * JB_ERR_MEMORY on out-of-memory
- *
- *********************************************************************/
- static jb_err map_radio(struct map * exports,
- const char * optionname,
- const char * values,
- int value)
- {
- char * buf;
- char * p;
- char c;
- const size_t len = strlen(optionname);
- const size_t buf_size = len + 3;
- assert(exports);
- assert(optionname);
- assert(values);
- buf = malloc_or_die(buf_size);
- strlcpy(buf, optionname, buf_size);
- /* XXX: this looks ... interesting */
- p = buf + len;
- *p++ = '-';
- p[1] = '\0';
- while ((c = *values++) != '\0')
- {
- if (c != value)
- {
- *p = c;
- if (map(exports, buf, 1, "", 1))
- {
- return JB_ERR_MEMORY;
- }
- }
- }
- *p = (char)value;
- return map(exports, buf, 0, "checked", 1);
- }
- /*********************************************************************
- *
- * Function : cgi_error_modified
- *
- * Description : CGI function that is called when a file is modified
- * outside the CGI editor.
- *
- * Parameters :
- * 1 : csp = Current client state (buffers, headers, etc...)
- * 2 : rsp = http_response data structure for output
- * 3 : filename = The file that was modified.
- *
- * CGI Parameters : none
- *
- * Returns : JB_ERR_OK on success
- * JB_ERR_MEMORY on out-of-memory error.
- *
- *********************************************************************/
- jb_err cgi_error_modified(struct client_state *csp,
- struct http_response *rsp,
- const char *filename)
- {
- struct map *exports;
- jb_err err;
- assert(csp);
- assert(rsp);
- assert(filename);
- if (NULL == (exports = default_exports(csp, NULL)))
- {
- return JB_ERR_MEMORY;
- }
- err = map(exports, "f", 1, html_encode(filename), 0);
- if (err)
- {
- free_map(exports);
- return err;
- }
- return template_fill_for_cgi(csp, "cgi-error-modified", exports, rsp);
- }
- /*********************************************************************
- *
- * Function : cgi_error_parse
- *
- * Description : CGI function that is called when a file cannot
- * be parsed by the CGI editor.
- *
- * Parameters :
- * 1 : csp = Current client state (buffers, headers, etc...)
- * 2 : rsp = http_response data structure for output
- * 3 : file = The file that was modified.
- *
- * CGI Parameters : none
- *
- * Returns : JB_ERR_OK on success
- * JB_ERR_MEMORY on out-of-memory error.
- *
- *********************************************************************/
- jb_err cgi_error_parse(struct client_state *csp,
- struct http_response *rsp,
- struct editable_file *file)
- {
- struct map *exports;
- jb_err err;
- struct file_line *cur_line;
- assert(csp);
- assert(rsp);
- assert(file);
- if (NULL == (exports = default_exports(csp, NULL)))
- {
- return JB_ERR_MEMORY;
- }
- err = map(exports, "f", 1, stringify(file->identifier), 0);
- if (!err) err = map(exports, "parse-error", 1, html_encode(file->parse_error_text), 0);
- cur_line = file->parse_error;
- assert(cur_line);
- if (!err) err = map(exports, "line-raw", 1, html_encode(cur_line->raw), 0);
- if (!err) err = map(exports, "line-data", 1, html_encode(cur_line->unprocessed), 0);
- if (err)
- {
- free_map(exports);
- return err;
- }
- return template_fill_for_cgi(csp, "cgi-error-parse", exports, rsp);
- }
- /*********************************************************************
- *
- * Function : cgi_error_file
- *
- * Description : CGI function that is called when a file cannot be
- * opened by the CGI editor.
- *
- * Parameters :
- * 1 : csp = Current client state (buffers, headers, etc...)
- * 2 : rsp = http_response data structure for output
- * 3 : filename = The file that was modified.
- *
- * CGI Parameters : none
- *
- * Returns : JB_ERR_OK on success
- * JB_ERR_MEMORY on out-of-memory error.
- *
- *********************************************************************/
- jb_err cgi_error_file(struct client_state *csp,
- struct http_response *rsp,
- const char *filename)
- {
- struct map *exports;
- jb_err err;
- assert(csp);
- assert(rsp);
- assert(filename);
- if (NULL == (exports = default_exports(csp, NULL)))
- {
- return JB_ERR_MEMORY;
- }
- err = map(exports, "f", 1, html_encode(filename), 0);
- if (err)
- {
- free_map(exports);
- return err;
- }
- return template_fill_for_cgi(csp, "cgi-error-file", exports, rsp);
- }
- /*********************************************************************
- *
- * Function : cgi_error_file_read_only
- *
- * Description : CGI function that is called when a file cannot be
- * opened for writing by the CGI editor.
- *
- * Parameters :
- * 1 : csp = Current client state (buffers, headers, etc...)
- * 2 : rsp = http_response data structure for output
- * 3 : filename = The file that we can't write to
- *
- * CGI Parameters : none
- *
- * Returns : JB_ERR_OK on success
- * JB_ERR_MEMORY on out-of-memory error.
- *
- *********************************************************************/
- jb_err cgi_error_file_read_only(struct client_state *csp,
- struct http_response *rsp,
- const char *filename)
- {
- struct map *exports;
- jb_err err;
- assert(csp);
- assert(rsp);
- assert(filename);
- if (NULL == (exports = default_exports(csp, NULL)))
- {
- return JB_ERR_MEMORY;
- }
- err = map(exports, "f", 1, html_encode(filename), 0);
- if (err)
- {
- free_map(exports);
- return err;
- }
- return template_fill_for_cgi(csp, "cgi-error-file-read-only", exports, rsp);
- }
- /*********************************************************************
- *
- * Function : cgi_edit_actions
- *
- * Description : CGI function that allows the user to choose which
- * actions file to edit.
- *
- * 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_edit_actions(struct client_state *csp,
- struct http_response *rsp,
- const struct map *parameters)
- {
- (void)parameters;
- if (0 == (csp->config->feature_flags & RUNTIME_FEATURE_CGI_EDIT_ACTIONS))
- {
- return cgi_error_disabled(csp, rsp);
- }
- /* FIXME: Incomplete */
- return cgi_redirect(rsp, CGI_PREFIX "edit-actions-list?f=default");
- }
- /*********************************************************************
- *
- * Function : cgi_edit_actions_list
- *
- * Description : CGI function that edits the actions list.
- * FIXME: This function shouldn't FATAL ever.
- * FIXME: This function doesn't check the retval of map()
- * 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 : filename
- *
- * Returns : JB_ERR_OK on success
- * JB_ERR_MEMORY on out-of-memory
- * JB_ERR_FILE if the file cannot be opened or
- * contains no data
- * JB_ERR_CGI_PARAMS if "filename" was not specified
- * or is not valid.
- *
- *********************************************************************/
- jb_err cgi_edit_actions_list(struct client_state *csp,
- struct http_response *rsp,
- const struct map *parameters)
- {
- char * section_template;
- char * url_template;
- char * sections;
- char * urls;
- char buf[150];
- char * s;
- struct map * exports;
- struct map * section_exports;
- struct map * url_exports;
- struct editable_file * file;
- struct file_line * cur_line;
- unsigned line_number = 0;
- unsigned prev_section_line_number = ((unsigned) (-1));
- int i, url_1_2;
- struct file_list * fl;
- struct url_actions * b;
- char * buttons = NULL;
- jb_err err;
- if (0 == (csp->config->feature_flags & RUNTIME_FEATURE_CGI_EDIT_ACTIONS))
- {
- return cgi_error_disabled(csp, rsp);
- }
- if (NULL == (exports = default_exports(csp, NULL)))
- {
- return JB_ERR_MEMORY;
- }
- /* Load actions file */
- err = edit_read_actions_file(csp, rsp, parameters, 0, &file);
- if (err)
- {
- /* No filename specified, can't read file, or out of memory. */
- free_map(exports);
- return (err == JB_ERR_FILE ? JB_ERR_OK : err);
- }
- /* Find start of actions in file */
- cur_line = file->lines;
- line_number = 1;
- while ((cur_line != NULL) && (cur_line->type != FILE_LINE_ACTION))
- {
- cur_line = cur_line->next;
- line_number++;
- }
- /*
- * Conventional actions files should have a match all block
- * at the start:
- * cur_line = {...global actions...}
- * cur_line->next = /
- * cur_line->next->next = {...actions...} or EOF
- */
- if ( (cur_line != NULL)
- && (cur_line->type == FILE_LINE_ACTION)
- && (cur_line->next != NULL)
- && (cur_line->next->type == FILE_LINE_URL)
- && (0 == strcmp(cur_line->next->unprocessed, "/"))
- && ( (cur_line->next->next == NULL)
- || (cur_line->next->next->type != FILE_LINE_URL)
- ) )
- {
- /*
- * Generate string with buttons to set actions for "/" to
- * any predefined set of actions (named standard.*, probably
- * residing in standard.action).
- */
- err = template_load(csp, §ion_template, "edit-actions-list-button", 0);
- if (err)
- {
- edit_free_file(file);
- free_map(exports);
- if (err == JB_ERR_FILE)
- {
- return cgi_error_no_template(csp, rsp, "edit-actions-list-button");
- }
- return err;
- }
- err = template_fill(§ion_template, exports);
- if (err)
- {
- edit_free_file(file);
- free_map(exports);
- return err;
- }
- buttons = strdup("");
- for (i = 0; i < MAX_AF_FILES; i++)
- {
- if (((fl = csp->actions_list[i]) != NULL) && ((b = fl->f) != NULL))
- {
- for (b = b->next; NULL != b; b = b->next)
- {
- if (!strncmp(b->url->spec, "standard.", 9) && *(b->url->spec + 9) != '\0')
- {
- if (err)
- {
- freez(buttons);
- free(section_template);
- edit_free_file(file);
- free_map(exports);
- return JB_ERR_MEMORY;
- }
- section_exports = new_map();
- err = map(section_exports, "button-name", 1, b->url->spec + 9, 1);
- if (err || (NULL == (s = strdup(section_template))))
- {
- free_map(section_exports);
- freez(buttons);
- free(section_template);
- edit_free_file(file);
- free_map(exports);
- return JB_ERR_MEMORY;
- }
- if (!err) err = template_fill(&s, section_exports);
- free_map(section_exports);
- if (!err) err = string_join(&buttons, s);
- }
- }
- }
- }
- freez(section_template);
- if (!err) err = map(exports, "all-urls-buttons", 1, buttons, 0);
- /*
- * Conventional actions file, supply extra editing help.
- * (e.g. don't allow them to make it an unconventional one).
- */
- if (!err) err = map_conditional(exports, "all-urls-present", 1);
- snprintf(buf, sizeof(buf), "%u", line_number);
- if (!err) err = map(exports, "all-urls-s", 1, buf, 1);
- snprintf(buf, sizeof(buf), "%u", line_number + 2);
- if (!err) err = map(exports, "all-urls-s-next", 1, buf, 1);
- if (!err) err = map(exports, "all-urls-actions", 1,
- actions_to_html(csp, cur_line->data.action), 0);
- /* Skip the 2 lines */
- cur_line = cur_line->next->next;
- line_number += 2;
- /*
- * Note that prev_section_line_number is NOT set here.
- * This is deliberate and not a bug. It stops a "Move up"
- * option appearing on the next section. Clicking "Move
- * up" would make the actions file unconventional, which
- * we don't want, so we hide this option.
- */
- }
- else
- {
- /*
- * Non-standard actions file - does not begin with
- * the "All URLs" section.
- */
- if (!err) err = map_conditional(exports, "all-urls-present", 0);
- }
- /* Set up global exports */
- if (!err) err = map(exports, "actions-file", 1, html_encode(file->filename), 0);
- if (!err) err = map(exports, "f", 1, stringify(file->identifier), 0);
- if (!err) err = map(exports, "v", 1, file->version_str, 1);
- /* Discourage private additions to default.action */
- if (!err) err = map_conditional(exports, "default-action",
- (strstr("default.action", file->filename) != NULL));
- if (err)
- {
- edit_free_file(file);
- free_map(exports);
- return err;
- }
- /* Should do all global exports above this point */
- /* Load templates */
- err = template_load(csp, §ion_template, "edit-actions-list-section", 0);
- if (err)
- {
- edit_free_file(file);
- free_map(exports);
- if (err == JB_ERR_FILE)
- {
- return cgi_error_no_template(csp, rsp, "edit-actions-list-section");
- }
- return err;
- }
- err = template_load(csp, &url_template, "edit-actions-list-url", 0);
- if (err)
- {
- free(section_template);
- edit_free_file(file);
- free_map(exports);
- if (err == JB_ERR_FILE)
- {
- return cgi_error_no_template(csp, rsp, "edit-actions-list-url");
- }
- return err;
- }
- err = template_fill(§ion_template, exports);
- if (err)
- {
- free(url_template);
- edit_free_file(file);
- free_map(exports);
- return err;
- }
- err = template_fill(&url_template, exports);
- if (err)
- {
- free(section_template);
- edit_free_file(file);
- free_map(exports);
- return err;
- }
- if (NULL == (sections = strdup("")))
- {
- free(section_template);
- free(url_template);
- edit_free_file(file);
- free_map(exports);
- return JB_ERR_MEMORY;
- }
- while ((cur_line != NULL) && (cur_line->type == FILE_LINE_ACTION))
- {
- section_exports = new_map();
- snprintf(buf, sizeof(buf), "%u", line_number);
- err = map(section_exports, "s", 1, buf, 1);
- if (!err) err = map(section_exports, "actions", 1,
- actions_to_html(csp, cur_line->data.action), 0);
- if ((!err)
- && (cur_line->next != NULL)
- && (cur_line->next->type == FILE_LINE_URL))
- {
- /* This section contains at least one URL, don't allow delete */
- err = map_block_killer(section_exports, "empty-section");
- }
- else
- {
- if (!err) err = map_block_keep(section_exports, "empty-section");
- }
- if (prev_section_line_number != ((unsigned)(-1)))
- {
- /* Not last section */
- snprintf(buf, sizeof(buf), "%u", prev_section_line_number);
- if (!err) err = map(section_exports, "s-prev", 1, buf, 1);
- if (!err) err = map_block_keep(section_exports, "s-prev-exists");
- }
- else
- {
- /* Last section */
- if (!err) err = map_block_killer(section_exports, "s-prev-exists");
- }
- prev_section_line_number = line_number;
- if (err)
- {
- free(sections);
- free(section_template);
- free(url_template);
- edit_free_file(file);
- free_map(exports);
- free_map(section_exports);
- return err;
- }
- /* Should do all section-specific exports above this point */
- if (NULL == (urls = strdup("")))
- {
- free(sections);
- free(section_template);
- free(url_template);
- edit_free_file(file);
- free_map(exports);
- free_map(section_exports);
- return JB_ERR_MEMORY;
- }
- url_1_2 = 2;
- cur_line = cur_line->next;
- line_number++;
- while ((cur_line != NULL) && (cur_line->type == FILE_LINE_URL))
- {
- url_exports = new_map();
- snprintf(buf, sizeof(buf), "%u", line_number);
- err = map(url_exports, "p", 1, buf, 1);
- snprintf(buf, sizeof(buf), "%d", url_1_2);
- if (!err) err = map(url_exports, "url-1-2", 1, buf, 1);
- if (!err) err = map(url_exports, "url-html", 1,
- html_encode(cur_line->unprocessed), 0);
- if (!err) err = map(url_exports, "url", 1,
- url_encode(cur_line->unprocessed), 0);
- if (err)
- {
- free(urls);
- free(sections);
- free(section_template);
- free(url_template);
- edit_free_file(file);
- free_map(exports);
- free_map(section_exports);
- free_map(url_exports);
- return err;
- }
- if (NULL == (s = strdup(url_template)))
- {
- free(urls);
- free(sections);
- free(section_template);
- free(url_template);
- edit_free_file(file);
- free_map(exports);
- free_map(section_exports);
- free_map(url_exports);
- return JB_ERR_MEMORY;
- }
- err = template_fill(&s, section_exports);
- if (!err) err = template_fill(&s, url_exports);
- if (!err) err = string_append(&urls, s);
- free_map(url_exports);
- freez(s);
- if (err)
- {
- freez(urls);
- free(sections);
- free(section_template);
- free(url_template);
- edit_free_file(file);
- free_map(exports);
- free_map(section_exports);
- return err;
- }
- url_1_2 = 3 - url_1_2;
- cur_line = cur_line->next;
- line_number++;
- }
- err = map(section_exports, "urls", 1, urls, 0);
- /* Could also do section-specific exports here, but it wouldn't be as fast */
- snprintf(buf, sizeof(buf), "%u", line_number);
- if (!err) err = map(section_exports, "s-next", 1, buf, 1);
- if ((cur_line != NULL)
- && (cur_line->type == FILE_LINE_ACTION))
- {
- /* Not last section */
- if (!err) err = map_block_keep(section_exports, "s-next-exists");
- }
- else
- {
- /* Last section */
- if (!err) err = map_block_killer(section_exports, "s-next-exists");
- }
- if (err)
- {
- free(sections);
- free(section_template);
- free(url_template);
- edit_free_file(file);
- free_map(exports);
- free_map(section_exports);
- return err;
- }
- if (NULL == (s = strdup(section_template)))
- {
- free(sections);
- free(section_template);
- free(url_template);
- edit_free_file(file);
- free_map(exports);
- free_map(section_exports);
- return JB_ERR_MEMORY;
- }
- err = template_fill(&s, section_exports);
- if (!err) err = string_append(§ions, s);
- freez(s);
- free_map(section_exports);
- if (err)
- {
- freez(sections);
- free(section_template);
- free(url_template);
- edit_free_file(file);
- free_map(exports);
- return err;
- }
- }
- edit_free_file(file);
- free(section_template);
- free(url_template);
- err = map(exports, "sections", 1, sections, 0);
- if (err)
- {
- free_map(exports);
- return err;
- }
- /* Could also do global exports here, but it wouldn't be as fast */
- return template_fill_for_cgi(csp, "edit-actions-list", exports, rsp);
- }
- /*********************************************************************
- *
- * Function : cgi_edit_actions_for_url
- *
- * Description : CGI function that edits the Actions list.
- *
- * 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_PARAMS if the CGI parameters are not
- * specified or not valid.
- *
- *********************************************************************/
- jb_err cgi_edit_actions_for_url(struct client_state *csp,
- struct http_response *rsp,
- const struct map *parameters)
- {
- struct map * exports;
- unsigned sectionid;
- struct editable_file * file;
- struct file_line * cur_line;
- unsigned line_number;
- jb_err err;
- struct re_filterfile_spec *filter_group;
- int i, have_filters = 0;
- if (0 == (csp->config->feature_flags & RUNTIME_FEATURE_CGI_EDIT_ACTIONS))
- {
- return cgi_error_disabled(csp, rsp);
- }
- err = get_number_param(csp, parameters, "s", §ionid);
- if (err)
- {
- return err;
- }
- err = edit_read_actions_file(csp, rsp, parameters, 1, &file);
- if (err)
- {
- /* No filename specified, can't read file, modified, or out of memory. */
- return (err == JB_ERR_FILE ? JB_ERR_OK : err);
- }
- cur_line = file->lines;
- for (line_number = 1; (cur_line != NULL) && (line_number < sectionid); line_number++)
- {
- cur_line = cur_line->next;
- }
- if ( (cur_line == NULL)
- || (line_number != sectionid)
- || (sectionid < 1)
- || (cur_line->type != FILE_LINE_ACTION))
- {
- /* Invalid "sectionid" parameter */
- edit_free_file(file);
- return JB_ERR_CGI_PARAMS;
- }
- if (NULL == (exports = default_exports(csp, NULL)))
- {
- edit_free_file(file);
- return JB_ERR_MEMORY;
- }
- err = map(exports, "f", 1, stringify(file->identifier), 0);
- if (!err) err = map(exports, "v", 1, file->version_str, 1);
- if (!err) err = map(exports, "s", 1, url_encode(lookup(parameters, "s")), 0);
- if (!err) err = actions_to_radio(exports, cur_line->data.action);
- /*
- * XXX: Some browsers (at least IE6 and IE7) have an artificial URL
- * length limitation and ignore clicks on the Submit buttons if
- * the resulting GET URL would be longer than their limit.
- *
- * In Privoxy 3.0.5 beta the standard edit-actions-for-url template
- * reached this limit and action editing stopped working in these
- * browsers (BR #1570678).
- *
- * The config option split-large-forms works around this browser
- * bug (HTTP has no URL length limitation) by dividing the action
- * list form into multiple smaller ones. It means the URLs are shorter
- * and work in broken browsers as well, but the user can no longer change
- * all actions with one submit.
- *
- * A better solution would be to switch to POST requests,
- * but this will do for now.
- */
- if (!err && (csp->config->feature_flags & RUNTIME_FEATURE_SPLIT_LARGE_FORMS))
- {
- /* Generate multiple smaller form by killing the big one. */
- err = map_block_killer(exports, "one-form-only");
- }
- else
- {
- /* Default: Generate one large form by killing the smaller ones. */
- err = map_block_killer(exports, "multiple-forms");
- }
- for (i = 0; i < MAX_AF_FILES; i++)
- {
- if ((csp->rlist[i] != NULL) && (csp->rlist[i]->f != NULL))
- {
- if (!err) err = map_conditional(exports, "any-filters-defined", 1);
- have_filters = 1;
- break;
- }
- }
- #ifndef FEATURE_EXTERNAL_FILTERS
- if (!err) err = map_block_killer(exports, "external-content-filters");
- #endif
- #ifndef FEATURE_HTTPS_INSPECTION
- if (!err) err = map_block_killer(exports, "https-inspection");
- #endif
- if (err)
- {
- edit_free_file(file);
- free_map(exports);
- return err;
- }
- if (0 == have_filters)
- {
- err = map(exports, "filter-params", 1, "", 1);
- }
- else
- {
- /*
- * List available filters and their settings.
- */
- char *filter_template;
- int filter_identifier = 0;
- char *prepared_templates[MAX_FILTER_TYPES];
- for (i = 0; i < MAX_FILTER_TYPES; i++)
- {
- prepared_templates[i] = strdup("");
- }
- err = template_load(csp, &filter_template, "edit-actions-for-url-filter", 0);
- if (err)
- {
- edit_free_file(file);
- free_map(exports);
- if (err == JB_ERR_FILE)
- {
- return cgi_error_no_template(csp, rsp, "edit-actions-for-url-filter");
- }
- return err;
- }
- err = template_fill(&filter_template, exports);
- for (i = 0; i < MAX_AF_FILES; i++)
- {
- if ((csp->rlist[i] != NULL) && (csp->rlist[i]->f != NULL))
- {
- filter_group = csp->rlist[i]->f;
- for (;(!err) && (filter_group != NULL); filter_group = filter_group->next)
- {
- char current_mode = 'x';
- char number[20];
- struct list_entry *filter_name;
- struct map *line_exports;
- const enum filter_type type = filter_group->type;
- const int multi_action_index = filter_type_info[type].multi_action_index;
- assert(type < MAX_FILTER_TYPES);
- filter_name = cur_line->data.action->multi_add[multi_action_index]->first;
- while ((filter_name != NULL)
- && (0 != strcmp(filter_group->name, filter_name->str)))
- {
- filter_name = filter_name->next;
- }
- if (filter_name != NULL)
- {
- current_mode = 'y';
- }
- else
- {
- filter_name = cur_line->data.action->multi_remove[multi_action_index]->first;
- while ((filter_name != NULL)
- && (0 != strcmp(filter_group->name, filter_name->str)))
- {
- filter_name = filter_name->next;
- }
- if (filter_name != NULL)
- {
- current_mode = 'n';
- }
- }
- /* Generate a unique serial number */
- snprintf(number, sizeof(number), "%x", filter_identifier++);
- number[sizeof(number) - 1] = '\0';
- line_exports = new_map();
- if (line_exports == NULL)
- {
- err = JB_ERR_MEMORY;
- }
- else
- {
- char *filter_line;
- if (!err) err = map(line_exports, "index", 1, number, 1);
- if (!err) err = map(line_exports, "name", 1, filter_group->name, 1);
- if (!err) err = map(line_exports, "description", 1, filter_group->description, 1);
- if (!err) err = map_radio(line_exports, "this-filter", "ynx", current_mode);
- if (!err) err = map(line_exports, "filter-type", 1, filter_type_info[type].type, 1);
- if (!err) err = map(line_exports, "abbr-filter-type", 1, filter_type_info[type].abbr_type, 1);
- if (!err) err = map(line_exports, "anchor", 1, filter_type_info[type].anchor, 1);
- if (!err)
- {
- filter_line = strdup(filter_template);
- if (filter_line == NULL) err = JB_ERR_MEMORY;
- }
- if (!err) err = template_fill(&filter_line, line_exports);
- string_join(&prepared_templates[type], filter_line);
- free_map(line_exports);
- }
- }
- }
- }
- freez(filter_template);
- /* Replace all filter macros with the aggregated templates */
- for (i = 0; i < MAX_FILTER_TYPES; i++)
- {
- if (err) break;
- err = map(exports, filter_type_info[i].macro_name, 1, prepared_templates[i], 0);
- }
- if (err)
- {
- /* Free aggregated templates */
- for (i = 0; i < MAX_FILTER_TYPES; i++)
- {
- freez(prepared_templates[i]);
- }
- }
- }
- /* Check or uncheck the "disable all of this type" radio buttons. */
- for (i = 0; i < MAX_FILTER_TYPES; i++)
- {
- const int a = filter_type_info[i].multi_action_index;
- const int disable_all = cur_line->data.action->multi_remove_all[a];
- if (err) break;
- err = map_radio(exports, filter_type_info[i].disable_all_option, "nx", (disable_all ? 'n' : 'x'));
- }
- edit_free_file(file);
- if (err)
- {
- free_map(exports);
- return err;
- }
- return template_fill_for_cgi(csp, "edit-actions-for-url", exports, rsp);
- }
- /*********************************************************************
- *
- * Function : get_number_of_filters
- *
- * Description : Counts the number of filter available.
- *
- * Parameters :
- * 1 : csp = Current client state (buffers, headers, etc...)
- *
- * Returns : Number of filters available.
- *
- *********************************************************************/
- static int get_number_of_filters(const struct client_state *csp)
- {
- int i;
- struct re_filterfile_spec *b;
- struct file_list *fl;
- int number_of_filters = 0;
- for (i = 0; i < MAX_AF_FILES; i++)
- {
- fl = csp->rlist[i];
- if ((NULL == fl) || (NULL == fl->f))
- {
- /*
- * Either there are no filter files left or this
- * filter file just contains no valid filters.
- *
- * Continue to be sure we don't miss valid filter
- * files that are chained after empty or invalid ones.
- */
- continue;
- }
- for (b = fl->f; b != NULL; b = b->next)
- {
- number_of_filters++;
- }
- }
- return number_of_filters;
- }
- /*********************************************************************
- *
- * Function : cgi_edit_actions_submit
- *
- * Description : CGI function that actually edits the Actions list.
- *
- * 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_PARAMS if the CGI parameters are not
- * specified or not valid.
- *
- *********************************************************************/
- jb_err cgi_edit_actions_submit(struct client_state *csp,
- struct http_response *rsp,
- const struct map *parameters)
- {
- unsigned sectionid;
- char * actiontext;
- char * newtext;
- size_t newtext_size;
- size_t len;
- struct editable_file * file;
- struct file_line * cur_line;
- unsigned line_number;
- char target[1024];
- jb_err err;
- int filter_identifier;
- int i;
- const char * action_set_name;
- struct file_list * fl;
- struct url_actions * b;
- int number_of_filters;
- if (0 == (csp->config->feature_flags & RUNTIME_FEATURE_CGI_EDIT_ACTIONS))
- {
- return cgi_error_disabled(csp, rsp);
- }
- err = get_number_param(csp, parameters, "s", §ionid);
- if (err)
- {
- return err;
- }
- err = edit_read_actions_file(csp, rsp, parameters, 1, &file);
- if (err)
- {
- /* No filename specified, can't read file, modified, or out of memory. */
- return (err == JB_ERR_FILE ? JB_ERR_OK : err);
- }
- cur_line = file->lines;
- for (line_number = 1; (cur_line != NULL) && (line_number < sectionid); line_number++)
- {
- cur_line = cur_line->next;
- }
- if ( (cur_line == NULL)
- || (line_number != sectionid)
- || (sectionid < 1)
- || (cur_line->type != FILE_LINE_ACTION))
- {
- /* Invalid "sectionid" parameter */
- edit_free_file(file);
- return JB_ERR_CGI_PARAMS;
- }
- get_string_param(parameters, "p", &action_set_name);
- if (action_set_name != NULL)
- {
- for (filter_identifier = 0; filter_identifier < MAX_AF_FILES; filter_identifier++)
- {
- if (((fl = csp->actions_list[filter_identifier]) != NULL) && ((b = fl->f) != NULL))
- {
- for (b = b->next; NULL != b; b = b->next)
- {
- if (!strncmp(b->url->spec, "standard.", 9) && !strcmp(b->url->spec + 9, action_set_name))
- {
- copy_action(cur_line->data.action, b->action);
- goto found;
- }
- }
- }
- }
- edit_free_file(file);
- return JB_ERR_CGI_PARAMS;
- found: ;
- }
- else
- {
- err = actions_from_radio(parameters, cur_line->data.action);
- }
- if (err)
- {
- /* Out of memory */
- edit_free_file(file);
- return err;
- }
- /* Check the "disable all of this type" parameters. */
- for (i = 0; i < MAX_FILTER_TYPES; i++)
- {
- const int multi_action_index = filter_type_info[i].multi_action_index;
- const char ch = get_char_param(parameters, filter_type_info[i].disable_all_param);
- if (ch == 'N')
- {
- list_remove_all(cur_line->data.action->multi_add[multi_action_index]);
- list_remove_all(cur_line->data.action->multi_remove[multi_action_index]);
- cur_line->data.action->multi_remove_all[multi_action_index] = 1;
- }
- else if (ch == 'X')
- {
- cur_line->data.action->multi_remove_all[multi_action_index] = 0;
- }
- }
- number_of_filters = get_number_of_filters(csp);
- for (filter_identifier = 0; filter_identifier < number_of_filters && !err; filter_identifier++)
- {
- char key_value[30];
- char key_name[30];
- char key_type[30];
- const char *name;
- char value; /*
- * Filter state. Valid states are: 'Y' (active),
- * 'N' (inactive) and 'X' (no change).
- * XXX: bad name.
- */
- char type; /*
- * Abbreviated filter type. Valid types are: 'F' (content filter),
- * 'S' (server-header filter) and 'C' (client-header filter).
- */
- int multi_action_index = 0;
- /* Generate the keys */
- snprintf(key_value, sizeof(key_value), "filter_r%x", filter_identifier);
- key_value[sizeof(key_value) - 1] = '\0'; /* XXX: Why? */
- snprintf(key_name, sizeof(key_name), "filter_n%x", filter_identifier);
- key_name[sizeof(key_name) - 1] = '\0'; /* XXX: Why? */
- snprintf(key_type, sizeof(key_type), "filter_t%x", filter_identifier);
- err = get_string_param(parameters, key_name, &name);
- if (err) break;
- if (name == NULL)
- {
- /* The filter identifier isn't present. Try the next one. */
- continue;
- }
- type = get_char_param(parameters, key_type);
- switch (type)
- {
- case 'F':
- multi_action_index = ACTION_MULTI_FILTER;
- break;
- case 'S':
- multi_action_index = ACTION_MULTI_SERVER_HEADER_FILTER;
- break;
- case 'C':
- multi_action_index = ACTION_MULTI_CLIENT_HEADER_FILTER;
- break;
- case 'L':
- multi_action_index = ACTION_MULTI_CLIENT_HEADER_TAGGER;
- break;
- case 'E':
- multi_action_index = ACTION_MULTI_SERVER_HEADER_TAGGER;
- break;
- default:
- log_error(LOG_LEVEL_ERROR,
- "Unknown filter type: %c for filter %s. Filter ignored.", type, name);
- continue;
- }
- assert(multi_action_index);
- value = get_char_param(parameters, key_value);
- if (value == 'Y')
- {
- list_remove_item(cur_line->data.action->multi_add[multi_action_index], name);
- if (!err) err = enlist(cur_line->data.action->multi_add[multi_action_index], name);
- list_remove_item(cur_line->data.action->multi_remove[multi_action_index], name);
- }
- else if (value == 'N')
- {
- list_remove_item(cur_line->data.action->multi_add[multi_action_index], name);
- if (!cur_line->data.action->multi_remove_all[multi_action_index])
- {
- list_remove_item(cur_line->data.action->multi_remove[multi_action_index], name);
- if (!err) err = enlist(cur_line->data.action->multi_remove[multi_action_index], name);
- }
- }
- else if (value == 'X')
- {
- list_remove_item(cur_line->data.action->multi_add[multi_action_index], name);
- list_remove_item(cur_line->data.action->multi_remove[multi_action_index], name);
- }
- }
- if (err)
- {
- /* Out of memory */
- edit_free_file(file);
- return err;
- }
- if (NULL == (actiontext = actions_to_text(cur_line->data.action)))
- {
- /* Out of memory */
- edit_free_file(file);
- return JB_ERR_MEMORY;
- }
- len = strlen(actiontext);
- if (len == 0)
- {
- /*
- * Empty action - must special-case this.
- * Simply setting len to 1 is sufficient...
- */
- len = 1;
- }
- newtext_size = len + 2;
- newtext = malloc_or_die(newtext_size);
- strlcpy(newtext, actiontext, newtext_size);
- free(actiontext);
- newtext[0] = '{';
- newtext[len] = '}';
- newtext[len + 1] = '\0';
- freez(cur_line->raw);
- freez(cur_line->unprocessed);
- cur_line->unprocessed = newtext;
- err = edit_write_file(file);
- if (err)
- {
- /* Error writing file */
- if (err == JB_ERR_FILE)
- {
- /* Read-only file. */
- err = cgi_error_file_read_only(csp, rsp, file->filename);
- }
- edit_free_file(file);
- return err;
- }
- snprintf(target, sizeof(target), CGI_PREFIX "edit-actions-list?foo=%lu&f=%u#l%u",
- (unsigned long) time(NULL), file->identifier, sectionid);
- edit_free_file(file);
- return cgi_redirect(rsp, target);
- }
- /*********************************************************************
- *
- * Function : cgi_edit_actions_url
- *
- * Description : CGI function that actually edits a URL pattern in
- * an actions 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 :
- * filename : Identifies the file to edit
- * ver : File's last-modified time
- * section : Line number of section to edit
- * pattern : Line number of pattern to edit
- * newval : New value for pattern
- *
- * Returns : JB_ERR_OK on success
- * JB_ERR_MEMORY on out-of-memory
- * JB_ERR_CGI_PARAMS if the CGI parameters are not
- * specified or not valid.
- *
- *********************************************************************/
- jb_err cgi_edit_actions_url(struct client_state *csp,
- struct http_response *rsp,
- const struct map *parameters)
- {
- unsigned patternid;
- char * new_pattern;
- struct editable_file * file;
- struct file_line * cur_line;
- unsigned line_number;
- unsigned section_start_line_number = 0;
- char target[1024];
- jb_err err;
- assert(csp);
- assert(rsp);
- assert(parameters);
- if (0 == (csp->config->feature_flags & RUNTIME_FEATURE_CGI_EDIT_ACTIONS))
- {
- return cgi_error_disabled(csp, rsp);
- }
- err = get_number_param(csp, parameters, "p", &patternid);
- if (err)
- {
- return err;
- }
- if (patternid < 1U)
- {
- return JB_ERR_CGI_PARAMS;
- }
- err = get_url_spec_param(csp, parameters, "u", &new_pattern);
- if (err)
- {
- return err;
- }
- err = edit_read_actions_file(csp, rsp, parameters, 1, &file);
- if (err)
- {
- /* No filename specified, can't read file, modified, or out of memory. */
- free(new_pattern);
- return (err == JB_ERR_FILE ? JB_ERR_OK : err);
- }
- line_number = 1;
- cur_line = file->lines;
- while ((cur_line != NULL) && (line_number < patternid))
- {
- if (cur_line->type == FILE_LINE_ACTION)
- {
- section_start_line_number = line_number;
- }
- cur_line = cur_line->next;
- line_number++;
- }
- if ((cur_line == NULL)
- || (cur_line->type != FILE_LINE_URL))
- {
- /* Invalid "patternid" parameter */
- free(new_pattern);
- edit_free_file(file);
- return JB_ERR_CGI_PARAMS;
- }
- /* At this point, the line to edit is in cur_line */
- freez(cur_line->raw);
- freez(cur_line->unprocessed);
- cur_line->unprocessed = new_pattern;
- err = edit_write_file(file);
- if (err)
- {
- /* Error writing file */
- if (err == JB_ERR_FILE)
- {
- /* Read-only file. */
- err = cgi_error_file_read_only(csp, rsp, file->filename);
- }
- edit_free_file(file);
- return err;
- }
- snprintf(target, sizeof(target), CGI_PREFIX "edit-actions-list?foo=%lu&f=%u#l%u",
- (unsigned long) time(NULL), file->identifier, section_start_line_number);
- edit_free_file(file);
- return cgi_redirect(rsp, target);
- }
- /*********************************************************************
- *
- * Function : cgi_edit_actions_add_url
- *
- * Description : CGI function that actually adds a URL pattern to
- * an actions 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 :
- * filename : Identifies the file to edit
- * ver : File's last-modified time
- * section : Line number of section to edit
- * newval : New pattern
- *
- * Returns : JB_ERR_OK on success
- * JB_ERR_MEMORY on out-of-memory
- * JB_ERR_CGI_PARAMS if the CGI parameters are not
- * specified or not valid.
- *
- *********************************************************************/
- jb_err cgi_edit_actions_add_url(struct client_state *csp,
- struct http_response *rsp,
- const struct map *parameters)
- {
- unsigned sectionid;
- char * new_pattern;
- struct file_line * new_line;
- struct editable_file * file;
- struct file_line * cur_line;
- unsigned line_number;
- char target[1024];
- jb_err err;
- if (0 == (csp->config->feature_flags & RUNTIME_FEATURE_CGI_EDIT_ACTIONS))
- {
- return cgi_error_disabled(csp, rsp);
- }
- err = get_number_param(csp, parameters, "s", §ionid);
- if (err)
- {
- return err;
- }
- if (sectionid < 1U)
- {
- return JB_ERR_CGI_PARAMS;
- }
- err = get_url_spec_param(csp, parameters, "u", &new_pattern);
- if (err)
- {
- return err;
- }
- err = edit_read_actions_file(csp, rsp, parameters, 1, &file);
- if (err)
- {
- /* No filename specified, can't read file, modified, or out of memory. */
- free(new_pattern);
- return (err == JB_ERR_FILE ? JB_ERR_OK : err);
- }
- line_number = 1;
- cur_line = file->lines;
- while ((cur_line != NULL) && (line_number < sectionid))
- {
- cur_line = cur_line->next;
- line_number++;
- }
- if ((cur_line == NULL)
- || (cur_line->type != FILE_LINE_ACTION))
- {
- /* Invalid "sectionid" parameter */
- free(new_pattern);
- edit_free_file(file);
- return JB_ERR_CGI_PARAMS;
- }
- /* At this point, the section header is in cur_line - add after this. */
- /* Allocate the new line */
- new_line = zalloc_or_die(sizeof(*new_line));
- /* Fill in the data members of the new line */
- new_line->raw = NULL;
- new_line->prefix = NULL;
- new_line->unprocessed = new_pattern;
- new_line->type = FILE_LINE_URL;
- /* Link new_line into the list, after cur_line */
- new_line->next = cur_line->next;
- cur_line->next = new_line;
- /* Done making changes, now commit */
- err = edit_write_file(file);
- if (err)
- {
- /* Error writing file */
- if (err == JB_ERR_FILE)
- {
- /* Read-only file. */
- err = cgi_error_file_read_only(csp, rsp, file->filename);
- }
- edit_free_file(file);
- return err;
- }
- snprintf(target, sizeof(target), CGI_PREFIX "edit-actions-list?foo=%lu&f=%u#l%u",
- (unsigned long) time(NULL), file->identifier, sectionid);
- edit_free_file(file);
- return cgi_redirect(rsp, target);
- }
- /*********************************************************************
- *
- * Function : cgi_edit_actions_remove_url
- *
- * Description : CGI function that actually removes a URL pattern from
- * the actions 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 :
- * f : (filename) Identifies the file to edit
- * v : (version) File's last-modified time
- * p : (pattern) Line number of pattern to remove
- *
- * Returns : JB_ERR_OK on success
- * JB_ERR_MEMORY on out-of-memory
- * JB_ERR_CGI_PARAMS if the CGI parameters are not
- * specified or not valid.
- *
- *********************************************************************/
- jb_err cgi_edit_actions_remove_url(struct client_state *csp,
- struct http_response *rsp,
- const struct map *parameters)
- {
- unsigned patternid;
- struct editable_file * file;
- struct file_line * cur_line;
- struct file_line * prev_line;
- unsigned line_number;
- unsigned section_start_line_number = 0;
- char target[1024];
- jb_err err;
- if (0 == (csp->config->feature_flags & RUNTIME_FEATURE_CGI_EDIT_ACTIONS))
- {
- return cgi_error_disabled(csp, rsp);
- }
- err = get_number_param(csp, parameters, "p", &patternid);
- if (err)
- {
- return err;
- }
- err = edit_read_actions_file(csp, rsp, parameters, 1, &file);
- if (err)
- {
- /* No filename specified, can't read file, modified, or out of memory. */
- return (err == JB_ERR_FILE ? JB_ERR_OK : err);
- }
- line_number = 1;
- prev_line = NULL;
- cur_line = file->lines;
- while ((cur_line != NULL) && (line_number < patternid))
- {
- if (cur_line->type == FILE_LINE_ACTION)
- {
- section_start_line_number = line_number;
- }
- prev_line = cur_line;
- cur_line = cur_line->next;
- line_number++;
- }
- if ( (cur_line == NULL)
- || (prev_line == NULL)
- || (cur_line->type != FILE_LINE_URL))
- {
- /* Invalid "patternid" parameter */
- edit_free_file(file);
- return JB_ERR_CGI_PARAMS;
- }
- /* At this point, the line to remove is in cur_line, and the previous
- * one is in prev_line
- */
- /* Unlink cur_line */
- prev_line->next = cur_line->next;
- cur_line->next = NULL;
- /* Free cur_line */
- edit_free_file_lines(cur_line);
- err = edit_write_file(file);
- if (err)
- {
- /* Error writing file */
- if (err == JB_ERR_FILE)
- {
- /* Read-only file. */
- err = cgi_error_file_read_only(csp, rsp, file->filename);
- }
- edit_free_file(file);
- return err;
- }
- snprintf(target, sizeof(target), CGI_PREFIX "edit-actions-list?foo=%lu&f=%u#l%u",
- (unsigned long) time(NULL), file->identifier, section_start_line_number);
- edit_free_file(file);
- return cgi_redirect(rsp, target);
- }
- /*********************************************************************
- *
- * Function : cgi_edit_actions_section_remove
- *
- * Description : CGI function that actually removes a whole section from
- * the actions file. The section must be empty first
- * (else JB_ERR_CGI_PARAMS).
- *
- * 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 :
- * f : (filename) Identifies the file to edit
- * v : (version) File's last-modified time
- * s : (section) Line number of section to edit
- *
- * Returns : JB_ERR_OK on success
- * JB_ERR_MEMORY on out-of-memory
- * JB_ERR_CGI_PARAMS if the CGI parameters are not
- * specified or not valid.
- *
- *********************************************************************/
- jb_err cgi_edit_actions_section_remove(struct client_state *csp,
- struct http_response *rsp,
- const struct map *parameters)
- {
- unsigned sectionid;
- struct editable_file * file;
- struct file_line * cur_line;
- struct file_line * prev_line;
- unsigned line_number;
- char target[1024];
- jb_err err;
- if (0 == (csp->config->feature_flags & RUNTIME_FEATURE_CGI_EDIT_ACTIONS))
- {
- return cgi_error_disabled(csp, rsp);
- }
- err = get_number_param(csp, parameters, "s", §ionid);
- if (err)
- {
- return err;
- }
- err = edit_read_actions_file(csp, rsp, parameters, 1, &file);
- if (err)
- {
- /* No filename specified, can't read file, modified, or out of memory. */
- return (err == JB_ERR_FILE ? JB_ERR_OK : err);
- }
- line_number = 1;
- cur_line = file->lines;
- prev_line = NULL;
- while ((cur_line != NULL) && (line_number < sectionid))
- {
- prev_line = cur_line;
- cur_line = cur_line->next;
- line_number++;
- }
- if ((cur_line == NULL)
- || (cur_line->type != FILE_LINE_ACTION))
- {
- /* Invalid "sectionid" parameter */
- edit_free_file(file);
- return JB_ERR_CGI_PARAMS;
- }
- if ((cur_line->next != NULL)
- && (cur_line->next->type == FILE_LINE_URL))
- {
- /* Section not empty. */
- edit_free_file(file);
- return JB_ERR_CGI_PARAMS;
- }
- /* At this point, the line to remove is in cur_line, and the previous
- * one is in prev_line
- */
- /* Unlink cur_line */
- if (prev_line == NULL)
- {
- /* Removing the first line from the file */
- file->lines = cur_line->next;
- }
- else
- {
- prev_line->next = cur_line->next;
- }
- cur_line->next = NULL;
- /* Free cur_line */
- edit_free_file_lines(cur_line);
- err = edit_write_file(file);
- if (err)
- {
- /* Error writing file */
- if (err == JB_ERR_FILE)
- {
- /* Read-only file. */
- err = cgi_error_file_read_only(csp, rsp, file->filename);
- }
- edit_free_file(file);
- return err;
- }
- snprintf(target, sizeof(target), CGI_PREFIX "edit-actions-list?foo=%lu&f=%u",
- (unsigned long) time(NULL), file->identifier);
- edit_free_file(file);
- return cgi_redirect(rsp, target);
- }
- /*********************************************************************
- *
- * Function : cgi_edit_actions_section_add
- *
- * Description : CGI function that adds a new empty section to
- * an actions 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 :
- * f : (filename) Identifies the file to edit
- * v : (version) File's last-modified time
- * s : (section) Line number of section to add after, 0 for
- * start of file.
- *
- * Returns : JB_ERR_OK on success
- * JB_ERR_MEMORY on out-of-memory
- * JB_ERR_CGI_PARAMS if the CGI parameters are not
- * specified or not valid.
- *
- *********************************************************************/
- jb_err cgi_edit_actions_section_add(struct client_state *csp,
- struct http_response *rsp,
- const struct map *parameters)
- {
- unsigned sectionid;
- struct file_line * new_line;
- char * new_text;
- struct editable_file * file;
- struct file_line * cur_line;
- unsigned line_number;
- char target[1024];
- jb_err err;
- if (0 == (csp->config->feature_flags & RUNTIME_FEATURE_CGI_EDIT_ACTIONS))
- {
- return cgi_error_disabled(csp, rsp);
- }
- err = get_number_param(csp, parameters, "s", §ionid);
- if (err)
- {
- return err;
- }
- err = edit_read_actions_file(csp, rsp, parameters, 1, &file);
- if (err)
- {
- /* No filename specified, can't read file, modified, or out of memory. */
- return (err == JB_ERR_FILE ? JB_ERR_OK : err);
- }
- line_number = 1;
- cur_line = file->lines;
- if (sectionid <= 1U)
- {
- /* Add to start of file */
- if (cur_line != NULL && cur_line->type != FILE_LINE_ACTION)
- {
- /* There's something in the file, find the line before the first
- * action.
- */
- while ((cur_line->next != NULL)
- && (cur_line->next->type != FILE_LINE_ACTION))
- {
- cur_line = cur_line->next;
- line_number++;
- }
- }
- else
- {
- /* File starts with action line, so insert at top */
- cur_line = NULL;
- }
- }
- else
- {
- /* Add after stated section. */
- while ((cur_line != NULL) && (line_number < sectionid))
- {
- cur_line = cur_line->next;
- line_number++;
- }
- if ((cur_line == NULL)
- || (cur_line->type != FILE_LINE_ACTION))
- {
- /* Invalid "sectionid" parameter */
- edit_free_file(file);
- return JB_ERR_CGI_PARAMS;
- }
- /* Skip through the section to find the last line in it. */
- while ((cur_line->next != NULL)
- && (cur_line->next->type != FILE_LINE_ACTION))
- {
- cur_line = cur_line->next;
- line_number++;
- }
- }
- /* At this point, the last line in the previous section is in cur_line
- * - add after this. (Or if we need to add as the first line, cur_line
- * will be NULL).
- */
- new_text = strdup("{}");
- if (NULL == new_text)
- {
- edit_free_file(file);
- return JB_ERR_MEMORY;
- }
- /* Allocate the new line */
- new_line = zalloc_or_die(sizeof(*new_line));
- /* Fill in the data members of the new line */
- new_line->raw = NULL;
- new_line->prefix = NULL;
- new_line->unprocessed = new_text;
- new_line->type = FILE_LINE_ACTION;
- if (cur_line != NULL)
- {
- /* Link new_line into the list, after cur_line */
- new_line->next = cur_line->next;
- cur_line->next = new_line;
- }
- else
- {
- /* Link new_line into the list, as first line */
- new_line->next = file->lines;
- file->lines = new_line;
- }
- /* Done making changes, now commit */
- err = edit_write_file(file);
- if (err)
- {
- /* Error writing file */
- if (err == JB_ERR_FILE)
- {
- /* Read-only file. */
- err = cgi_error_file_read_only(csp, rsp, file->filename);
- }
- edit_free_file(file);
- return err;
- }
- snprintf(target, sizeof(target), CGI_PREFIX "edit-actions-list?foo=%lu&f=%u",
- (unsigned long) time(NULL), file->identifier);
- edit_free_file(file);
- return cgi_redirect(rsp, target);
- }
- /*********************************************************************
- *
- * Function : cgi_edit_actions_section_swap
- *
- * Description : CGI function that swaps the order of two sections
- * in the actions file. Note that this CGI can actually
- * swap any two arbitrary sections, but the GUI interface
- * currently only allows consecutive sections to be
- * specified.
- *
- * 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 :
- * f : (filename) Identifies the file to edit
- * v : (version) File's last-modified time
- * s1 : (section1) Line number of first section to swap
- * s2 : (section2) Line number of second section to swap
- *
- * Returns : JB_ERR_OK on success
- * JB_ERR_MEMORY on out-of-memory
- * JB_ERR_CGI_PARAMS if the CGI parameters are not
- * specified or not valid.
- *
- *********************************************************************/
- jb_err cgi_edit_actions_section_swap(struct client_state *csp,
- struct http_response *rsp,
- const struct map *parameters)
- {
- unsigned section1;
- unsigned section2;
- struct editable_file * file;
- struct file_line * cur_line;
- struct file_line * prev_line;
- struct file_line * line_before_section1;
- struct file_line * line_start_section1;
- struct file_line * line_end_section1;
- struct file_line * line_after_section1;
- struct file_line * line_before_section2;
- struct file_line * line_start_section2;
- struct file_line * line_end_section2;
- struct file_line * line_after_section2;
- unsigned line_number;
- char target[1024];
- jb_err err;
- if (0 == (csp->config->feature_flags & RUNTIME_FEATURE_CGI_EDIT_ACTIONS))
- {
- return cgi_error_disabled(csp, rsp);
- }
- err = get_number_param(csp, parameters, "s1", §ion1);
- if (!err) err = get_number_param(csp, parameters, "s2", §ion2);
- if (err)
- {
- return err;
- }
- if (section1 > section2)
- {
- unsigned temp = section2;
- section2 = section1;
- section1 = temp;
- }
- err = edit_read_actions_file(csp, rsp, parameters, 1, &file);
- if (err)
- {
- /* No filename specified, can't read file, modified, or out of memory. */
- return (err == JB_ERR_FILE ? JB_ERR_OK : err);
- }
- /* Start at the beginning... */
- line_number = 1;
- cur_line = file->lines;
- prev_line = NULL;
- /* ... find section1 ... */
- while ((cur_line != NULL) && (line_number < section1))
- {
- prev_line = cur_line;
- cur_line = cur_line->next;
- line_number++;
- }
- if ((cur_line == NULL)
- || (cur_line->type != FILE_LINE_ACTION))
- {
- /* Invalid "section1" parameter */
- edit_free_file(file);
- return JB_ERR_CGI_PARAMS;
- }
- /* If no-op, we've validated params and can skip the rest. */
- if (section1 != section2)
- {
- /* ... find the end of section1 ... */
- line_before_section1 = prev_line;
- line_start_section1 = cur_line;
- do
- {
- prev_line = cur_line;
- cur_line = cur_line->next;
- line_number++;
- }
- while ((cur_line != NULL) && (cur_line->type == FILE_LINE_URL));
- line_end_section1 = prev_line;
- line_after_section1 = cur_line;
- /* ... find section2 ... */
- while ((cur_line != NULL) && (line_number < section2))
- {
- prev_line = cur_line;
- cur_line = cur_line->next;
- line_number++;
- }
- if ((cur_line == NULL)
- || (cur_line->type != FILE_LINE_ACTION))
- {
- /* Invalid "section2" parameter */
- edit_free_file(file);
- return JB_ERR_CGI_PARAMS;
- }
- /* ... find the end of section2 ... */
- line_before_section2 = prev_line;
- line_start_section2 = cur_line;
- do
- {
- prev_line = cur_line;
- cur_line = cur_line->next;
- line_number++;
- }
- while ((cur_line != NULL) && (cur_line->type == FILE_LINE_URL));
- line_end_section2 = prev_line;
- line_after_section2 = cur_line;
- /* Now have all the pointers we need. Do the swap. */
- /* Change the pointer to section1 to point to section2 instead */
- if (line_before_section1 == NULL)
- {
- file->lines = line_start_section2;
- }
- else
- {
- line_before_section1->next = line_start_section2;
- }
- if (line_before_section2 == line_end_section1)
- {
- /* Consecutive sections */
- line_end_section2->next = line_start_section1;
- }
- else
- {
- line_end_section2->next = line_after_section1;
- line_before_section2->next = line_start_section1;
- }
- /* Set the pointer from the end of section1 to the rest of the file */
- line_end_section1->next = line_after_section2;
- err = edit_write_file(file);
- if (err)
- {
- /* Error writing file */
- if (err == JB_ERR_FILE)
- {
- /* Read-only file. */
- err = cgi_error_file_read_only(csp, rsp, file->filename);
- }
- edit_free_file(file);
- return err;
- }
- } /* END if (section1 != section2) */
- snprintf(target, sizeof(target), CGI_PREFIX "edit-actions-list?foo=%lu&f=%u",
- (unsigned long) time(NULL), file->identifier);
- edit_free_file(file);
- return cgi_redirect(rsp, target);
- }
- /*********************************************************************
- *
- * Function : javascriptify
- *
- * Description : Converts a string into a form JavaScript will like.
- *
- * Netscape 4's JavaScript sucks - it doesn't use
- * "id" parameters, so you have to set the "name"
- * used to submit a form element to something JavaScript
- * will like. (Or access the elements by index in an
- * array. That array contains >60 elements and will
- * be changed whenever we add a new action to the
- * editor, so I'm NOT going to use indexes that have
- * to be figured out by hand.)
- *
- * Currently the only thing we have to worry about
- * is "-" ==> "_" conversion.
- *
- * This is a length-preserving operation so it is
- * carried out in-place, no memory is allocated
- * or freed.
- *
- * Parameters :
- * 1 : identifier = String to make JavaScript-friendly.
- *
- * Returns : N/A
- *
- *********************************************************************/
- static void javascriptify(char * identifier)
- {
- char * p = identifier;
- while (NULL != (p = strchr(p, '-')))
- {
- *p++ = '_';
- }
- }
- /*********************************************************************
- *
- * Function : actions_to_radio
- *
- * Description : Converts a actionsfile entry into settings for
- * radio buttons and edit boxes on a HTML form.
- *
- * Parameters :
- * 1 : exports = List of substitutions to add to.
- * 2 : action = Action to read
- *
- * Returns : JB_ERR_OK on success
- * JB_ERR_MEMORY on out-of-memory
- *
- *********************************************************************/
- static jb_err actions_to_radio(struct map * exports,
- const struct action_spec *action)
- {
- unsigned long mask;
- unsigned long add;
- int mapped_param;
- int checked;
- char current_mode;
- assert(exports);
- assert(action);
- mask = action->mask;
- add = action->add;
- /* sanity - prevents "-feature +feature" */
- mask |= add;
- #define DEFINE_ACTION_BOOL(name, bit) \
- if (!(mask & bit)) \
- { \
- current_mode = 'n'; \
- } \
- else if (add & bit) \
- { \
- current_mode = 'y'; \
- } \
- else \
- { \
- current_mode = 'x'; \
- } \
- if (map_radio(exports, name, "ynx", current_mode)) \
- { \
- return JB_ERR_MEMORY; \
- }
- #define DEFINE_ACTION_STRING(name, bit, index) \
- DEFINE_ACTION_BOOL(name, bit); \
- mapped_param = 0;
- #define DEFINE_CGI_PARAM_RADIO(name, bit, index, value, is_default) \
- if (add & bit) \
- { \
- checked = !strcmp(action->string[index], value); \
- } \
- else \
- { \
- checked = is_default; \
- } \
- mapped_param |= checked; \
- if (map(exports, name "-param-" value, 1, (checked ? "checked" : ""), 1)) \
- { \
- return JB_ERR_MEMORY; \
- }
- #define DEFINE_CGI_PARAM_CUSTOM(name, bit, index, default_val) \
- if (map(exports, name "-param-custom", 1, \
- ((!mapped_param) ? "checked" : ""), 1)) \
- { \
- return JB_ERR_MEMORY; \
- } \
- if (map(exports, name "-param", 1, \
- (((add & bit) && !mapped_param) ? \
- action->string[index] : default_val), 1)) \
- { \
- return JB_ERR_MEMORY; \
- }
- #define DEFINE_CGI_PARAM_NO_RADIO(name, bit, index, default_val) \
- if (map(exports, name "-param", 1, \
- ((add & bit) ? action->string[index] : default_val), 1)) \
- { \
- return JB_ERR_MEMORY; \
- }
- #define DEFINE_ACTION_MULTI(name, index) \
- if (action->multi_add[index]->first) \
- { \
- current_mode = 'y'; \
- } \
- else if (action->multi_remove_all[index]) \
- { \
- current_mode = 'n'; \
- } \
- else if (action->multi_remove[index]->first) \
- { \
- current_mode = 'y'; \
- } \
- else \
- { \
- current_mode = 'x'; \
- } \
- if (map_radio(exports, name, "ynx", current_mode)) \
- { \
- return JB_ERR_MEMORY; \
- }
- #define DEFINE_ACTION_ALIAS 0 /* No aliases for output */
- #include "actionlist.h"
- #undef DEFINE_ACTION_MULTI
- #undef DEFINE_ACTION_STRING
- #undef DEFINE_ACTION_BOOL
- #undef DEFINE_ACTION_ALIAS
- #undef DEFINE_CGI_PARAM_CUSTOM
- #undef DEFINE_CGI_PARAM_RADIO
- #undef DEFINE_CGI_PARAM_NO_RADIO
- return JB_ERR_OK;
- }
- /*********************************************************************
- *
- * Function : actions_from_radio
- *
- * Description : Converts a map of parameters passed to a CGI function
- * into an actionsfile entry.
- *
- * Parameters :
- * 1 : parameters = parameters to the CGI call
- * 2 : action = Action to change. Must be valid before
- * the call, actions not specified will be
- * left unchanged.
- *
- * Returns : JB_ERR_OK on success
- * JB_ERR_MEMORY on out-of-memory
- *
- *********************************************************************/
- static jb_err actions_from_radio(const struct map * parameters,
- struct action_spec *action)
- {
- const char * param;
- char * param_dup;
- char ch;
- const char * js_name;
- jb_err err = JB_ERR_OK;
- assert(parameters);
- assert(action);
- /* Statics are generally a potential race condition,
- * but in this case we're safe and don't need semaphores.
- * Be careful if you modify this function.
- * - Jon
- * The js_name_arr's are never free()d, but this is no
- * problem, since they will only be created once and
- * used by all threads thereafter. -oes
- */
- #define JAVASCRIPTIFY(dest_var, string) \
- { \
- static int first_time = 1; \
- static char *js_name_arr; \
- if (first_time) \
- { \
- js_name_arr = strdup(string); \
- javascriptify(js_name_arr); \
- } \
- dest_var = js_name_arr; \
- first_time = 0; \
- } \
- #define DEFINE_ACTION_BOOL(name, bit) \
- JAVASCRIPTIFY(js_name, name); \
- ch = get_char_param(parameters, js_name); \
- if (ch == 'Y') \
- { \
- action->add |= bit; \
- action->mask |= bit; \
- } \
- else if (ch == 'N') \
- { \
- action->add &= ~bit; \
- action->mask &= ~bit; \
- } \
- else if (ch == 'X') \
- { \
- action->add &= ~bit; \
- action->mask |= bit; \
- } \
- #define DEFINE_ACTION_STRING(name, bit, index) \
- JAVASCRIPTIFY(js_name, name); \
- ch = get_char_param(parameters, js_name); \
- if (ch == 'Y') \
- { \
- param = NULL; \
- JAVASCRIPTIFY(js_name, name "-mode"); \
- if (!err) err = get_string_param(parameters, js_name, ¶m); \
- if ((param == NULL) || (0 == strcmp(param, "CUSTOM"))) \
- { \
- JAVASCRIPTIFY(js_name, name "-param"); \
- if (!err) err = get_string_param(parameters, js_name, ¶m); \
- } \
- if (param != NULL) \
- { \
- if (NULL == (param_dup = strdup(param))) \
- { \
- return JB_ERR_MEMORY; \
- } \
- freez(action->string[index]); \
- action->add |= bit; \
- action->mask |= bit; \
- action->string[index] = param_dup; \
- } \
- } \
- else if (ch == 'N') \
- { \
- if (action->add & bit) \
- { \
- freez(action->string[index]); \
- } \
- action->add &= ~bit; \
- action->mask &= ~bit; \
- } \
- else if (ch == 'X') \
- { \
- if (action->add & bit) \
- { \
- freez(action->string[index]); \
- } \
- action->add &= ~bit; \
- action->mask |= bit; \
- } \
- #define DEFINE_ACTION_MULTI(name, index) \
- JAVASCRIPTIFY(js_name, name); \
- ch = get_char_param(parameters, js_name); \
- if (ch == 'Y') \
- { \
- /* FIXME */ \
- } \
- else if (ch == 'N') \
- { \
- list_remove_all(action->multi_add[index]); \
- list_remove_all(action->multi_remove[index]); \
- action->multi_remove_all[index] = 1; \
- } \
- else if (ch == 'X') \
- { \
- list_remove_all(action->multi_add[index]); \
- list_remove_all(action->multi_remove[index]); \
- action->multi_remove_all[index] = 0; \
- } \
- #define DEFINE_ACTION_ALIAS 0 /* No aliases for URL parsing */
- #include "actionlist.h"
- #undef DEFINE_ACTION_MULTI
- #undef DEFINE_ACTION_STRING
- #undef DEFINE_ACTION_BOOL
- #undef DEFINE_ACTION_ALIAS
- #undef JAVASCRIPTIFY
- return err;
- }
- #endif /* def FEATURE_CGI_EDIT_ACTIONS */
- #ifdef FEATURE_TOGGLE
- /*********************************************************************
- *
- * Function : cgi_toggle
- *
- * Description : CGI function that adds a new empty section to
- * an actions 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 :
- * set : If present, how to change toggle setting:
- * "enable", "disable", "toggle", or none (default).
- * mini : If present, use mini reply template.
- *
- * Returns : JB_ERR_OK on success
- * JB_ERR_MEMORY on out-of-memory
- *
- *********************************************************************/
- jb_err cgi_toggle(struct client_state *csp,
- struct http_response *rsp,
- const struct map *parameters)
- {
- struct map *exports;
- char mode;
- const char *template_name;
- assert(csp);
- assert(rsp);
- assert(parameters);
- if (0 == (csp->config->feature_flags & RUNTIME_FEATURE_CGI_TOGGLE))
- {
- return cgi_error_disabled(csp, rsp);
- }
- mode = get_char_param(parameters, "set");
- if (mode == 'E')
- {
- /* Enable */
- global_toggle_state = 1;
- }
- else if (mode == 'D')
- {
- /* Disable */
- global_toggle_state = 0;
- }
- else if (mode == 'T')
- {
- /* Toggle */
- global_toggle_state = !global_toggle_state;
- }
- log_error(LOG_LEVEL_INFO, "Now toggled %s.", global_toggle_state ? "ON" : "OFF");
- if (NULL == (exports = default_exports(csp, "toggle")))
- {
- return JB_ERR_MEMORY;
- }
- template_name = (get_char_param(parameters, "mini")
- ? "toggle-mini"
- : "toggle");
- return template_fill_for_cgi(csp, template_name, exports, rsp);
- }
- #endif /* def FEATURE_TOGGLE */
- /*
- Local Variables:
- tab-width: 3
- end:
- */
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