swat.c

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/* 
   Unix SMB/CIFS implementation.
   Samba Web Administration Tool
   Version 3.0.0
   Copyright (C) Andrew Tridgell 1997-2002
   Copyright (C) John H Terpstra 2002
   
   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.
   
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

/**
 * @defgroup swat SWAT - Samba Web Administration Tool
 * @{ 
 * @file swat.c
 *
 * @brief Samba Web Administration Tool.
 **/

#include "includes.h"
#include "web/swat_proto.h"

static BOOL demo_mode = False;
static BOOL passwd_only = False;
static BOOL have_write_access = False;
static BOOL have_read_access = False;
static int iNumNonAutoPrintServices = 0;

/*
 * Password Management Globals
 */
#define SWAT_USER "username"
#define OLD_PSWD "old_passwd"
#define NEW_PSWD "new_passwd"
#define NEW2_PSWD "new2_passwd"
#define CHG_S_PASSWD_FLAG "chg_s_passwd_flag"
#define CHG_R_PASSWD_FLAG "chg_r_passwd_flag"
#define ADD_USER_FLAG "add_user_flag"
#define DELETE_USER_FLAG "delete_user_flag"
#define DISABLE_USER_FLAG "disable_user_flag"
#define ENABLE_USER_FLAG "enable_user_flag"
#define RHOST "remote_host"


/****************************************************************************
****************************************************************************/
static int enum_index(int value, const struct enum_list *enumlist)
{
	int i;
	for (i=0;enumlist[i].name;i++)
		if (value == enumlist[i].value) break;
	return(i);
}

static char *fix_backslash(const char *str)
{
	static char newstring[1024];
	char *p = newstring;

        while (*str) {
                if (*str == '\\') {*p++ = '\\';*p++ = '\\';}
                else *p++ = *str;
                ++str;
        }
	*p = '\0';
	return newstring;
}

static char *fix_quotes(const char *str)
{
	static pstring newstring;
	char *p = newstring;
	size_t newstring_len = sizeof(newstring);
	int quote_len = strlen(""");

	while (*str) {
		if ( *str == '\"' && (newstring_len - PTR_DIFF(p, newstring) - 1) > quote_len ) {
			strncpy( p, """, quote_len); 
			p += quote_len;
		} else {
			*p++ = *str;
		}
		++str;
	}
	*p = '\0';
	return newstring;
}

static char *stripspaceupper(const char *str)
{
	static char newstring[1024];
	char *p = newstring;

	while (*str) {
		if (*str != ' ') *p++ = toupper_ascii(*str);
		++str;
	}
	*p = '\0';
	return newstring;
}

static char *make_parm_name(const char *label)
{
	static char parmname[1024];
	char *p = parmname;

	while (*label) {
		if (*label == ' ') *p++ = '_';
		else *p++ = *label;
		++label;
	}
	*p = '\0';
	return parmname;
}

/****************************************************************************
  include a lump of html in a page 
****************************************************************************/
static int include_html(const char *fname)
{
	int fd;
	char buf[1024];
	int ret;

	fd = web_open(fname, O_RDONLY, 0);

	if (fd == -1) {
		printf(_("ERROR: Can't open %s"), fname);
		printf("\n");
		return 0;
	}

	while ((ret = read(fd, buf, sizeof(buf))) > 0) {
		write(1, buf, ret);
	}

	close(fd);
	return 1;
}

/****************************************************************************
  start the page with standard stuff 
****************************************************************************/
static void print_header(void)
{
	if (!cgi_waspost()) {
		printf("Expires: 0\r\n");
	}
	printf("Content-type: text/html\r\n\r\n");

	if (!include_html("include/header.html")) {
		printf("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 3.2//EN\">\n");
		printf("<HTML>\n<HEAD>\n<TITLE>Samba Web Administration Tool</TITLE>\n</HEAD>\n<BODY background=\"/swat/images/background.jpg\">\n\n");
	}
}

/* *******************************************************************
   show parameter label with translated name in the following form
   because showing original and translated label in one line looks
   too long, and showing translated label only is unusable for
   heavy users.
   -------------------------------
   HELP       security   [combo box][button]
   SECURITY
   -------------------------------
   (capital words are translated by gettext.)
   if no translation is available, then same form as original is
   used.
   "i18n_translated_parm" class is used to change the color of the
   translated parameter with CSS.
   **************************************************************** */
static const char* get_parm_translated(
	const char* pAnchor, const char* pHelp, const char* pLabel)
{
	const char* pTranslated = _(pLabel);
	static pstring output;
	if(strcmp(pLabel, pTranslated) != 0)
	{
		pstr_sprintf(output,
		  "<A HREF=\"/swat/help/manpages/smb.conf.5.html#%s\" target=\"docs\"> %s</A>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; %s <br><span class=\"i18n_translated_parm\">%s</span>",
		   pAnchor, pHelp, pLabel, pTranslated);
		return output;
	}
	pstr_sprintf(output, 
	  "<A HREF=\"/swat/help/manpages/smb.conf.5.html#%s\" target=\"docs\"> %s</A>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; %s",
	  pAnchor, pHelp, pLabel);
	return output;
}
/****************************************************************************
 finish off the page 
****************************************************************************/
static void print_footer(void)
{
	if (!include_html("include/footer.html")) {
		printf("\n</BODY>\n</HTML>\n");
	}
}

/****************************************************************************
  display one editable parameter in a form 
****************************************************************************/
static void show_parameter(int snum, struct parm_struct *parm)
{
	int i;
	void *ptr = parm->ptr;
	char *utf8_s1, *utf8_s2;

	if (parm->p_class == P_LOCAL && snum >= 0) {
		ptr = lp_local_ptr(snum, ptr);
	}

	printf("<tr><td>%s</td><td>", get_parm_translated(stripspaceupper(parm->label), _("Help"), parm->label));
	switch (parm->type) {
	case P_CHAR:
		printf("<input type=text size=2 name=\"parm_%s\" value=\"%c\">",
		       make_parm_name(parm->label), *(char *)ptr);
		printf("<input type=button value=\"%s\" onClick=\"swatform.parm_%s.value=\'%c\'\">",
			_("Set Default"), make_parm_name(parm->label),(char)(parm->def.cvalue));
		break;

	case P_LIST:
		printf("<input type=text size=40 name=\"parm_%s\" value=\"",
			make_parm_name(parm->label));
		if ((char ***)ptr && *(char ***)ptr && **(char ***)ptr) {
			char **list = *(char ***)ptr;
			for (;*list;list++) {
				/* enclose in HTML encoded quotes if the string contains a space */
				if ( strchr_m(*list, ' ') ) {
					push_utf8_allocate(&utf8_s1, *list);
					push_utf8_allocate(&utf8_s2, ((*(list+1))?", ":""));
					printf("&quot;%s&quot;%s", utf8_s1, utf8_s2);
				} else {
					push_utf8_allocate(&utf8_s1, *list);
					push_utf8_allocate(&utf8_s2, ((*(list+1))?", ":""));
					printf("%s%s", utf8_s1, utf8_s2);
				}
				SAFE_FREE(utf8_s1);
				SAFE_FREE(utf8_s2);
			}
		}
		printf("\">");
		printf("<input type=button value=\"%s\" onClick=\"swatform.parm_%s.value=\'",
			_("Set Default"), make_parm_name(parm->label));
		if (parm->def.lvalue) {
			char **list = (char **)(parm->def.lvalue);
			for (; *list; list++) {
				/* enclose in HTML encoded quotes if the string contains a space */
				if ( strchr_m(*list, ' ') ) 
					printf("&quot;%s&quot;%s", *list, ((*(list+1))?", ":""));
				else
					printf("%s%s", *list, ((*(list+1))?", ":""));
			}
		}
		printf("\'\">");
		break;

	case P_STRING:
	case P_USTRING:
		push_utf8_allocate(&utf8_s1, *(char **)ptr);
		printf("<input type=text size=40 name=\"parm_%s\" value=\"%s\">",
		       make_parm_name(parm->label), fix_quotes(utf8_s1));
		SAFE_FREE(utf8_s1);
		printf("<input type=button value=\"%s\" onClick=\"swatform.parm_%s.value=\'%s\'\">",
			_("Set Default"), make_parm_name(parm->label),fix_backslash((char *)(parm->def.svalue)));
		break;

	case P_GSTRING:
	case P_UGSTRING:
		push_utf8_allocate(&utf8_s1, (char *)ptr);
		printf("<input type=text size=40 name=\"parm_%s\" value=\"%s\">",
		       make_parm_name(parm->label), fix_quotes(utf8_s1));
		SAFE_FREE(utf8_s1);
		printf("<input type=button value=\"%s\" onClick=\"swatform.parm_%s.value=\'%s\'\">",
			_("Set Default"), make_parm_name(parm->label),fix_backslash((char *)(parm->def.svalue)));
		break;

	case P_BOOL:
		printf("<select name=\"parm_%s\">",make_parm_name(parm->label)); 
		printf("<option %s>Yes", (*(BOOL *)ptr)?"selected":"");
		printf("<option %s>No", (*(BOOL *)ptr)?"":"selected");
		printf("</select>");
		printf("<input type=button value=\"%s\" onClick=\"swatform.parm_%s.selectedIndex=\'%d\'\">",
			_("Set Default"), make_parm_name(parm->label),(BOOL)(parm->def.bvalue)?0:1);
		break;

	case P_BOOLREV:
		printf("<select name=\"parm_%s\">",make_parm_name(parm->label)); 
		printf("<option %s>Yes", (*(BOOL *)ptr)?"":"selected");
		printf("<option %s>No", (*(BOOL *)ptr)?"selected":"");
		printf("</select>");
		printf("<input type=button value=\"%s\" onClick=\"swatform.parm_%s.selectedIndex=\'%d\'\">",
			_("Set Default"), make_parm_name(parm->label),(BOOL)(parm->def.bvalue)?1:0);
		break;

	case P_INTEGER:
		printf("<input type=text size=8 name=\"parm_%s\" value=\"%d\">", make_parm_name(parm->label), *(int *)ptr);
		printf("<input type=button value=\"%s\" onClick=\"swatform.parm_%s.value=\'%d\'\">",
			_("Set Default"), make_parm_name(parm->label),(int)(parm->def.ivalue));
		break;

	case P_OCTAL:
		printf("<input type=text size=8 name=\"parm_%s\" value=%s>", make_parm_name(parm->label), octal_string(*(int *)ptr));
		printf("<input type=button value=\"%s\" onClick=\"swatform.parm_%s.value=\'%s\'\">",
		       _("Set Default"), make_parm_name(parm->label),
		       octal_string((int)(parm->def.ivalue)));
		break;

	case P_ENUM:
		printf("<select name=\"parm_%s\">",make_parm_name(parm->label)); 
		for (i=0;parm->enum_list[i].name;i++) {
			if (i == 0 || parm->enum_list[i].value != parm->enum_list[i-1].value) {
				printf("<option %s>%s",(*(int *)ptr)==parm->enum_list[i].value?"selected":"",parm->enum_list[i].name);
			}
		}
		printf("</select>");
		printf("<input type=button value=\"%s\" onClick=\"swatform.parm_%s.selectedIndex=\'%d\'\">",
			_("Set Default"), make_parm_name(parm->label),enum_index((int)(parm->def.ivalue),parm->enum_list));
		break;
	case P_SEP:
		break;
	}
	printf("</td></tr>\n");
}

/****************************************************************************
  display a set of parameters for a service 
****************************************************************************/
static void show_parameters(int snum, int allparameters, unsigned int parm_filter, int printers)
{
	int i = 0;
	struct parm_struct *parm;
	const char *heading = NULL;
	const char *last_heading = NULL;

	while ((parm = lp_next_parameter(snum, &i, allparameters))) {
		if (snum < 0 && parm->p_class == P_LOCAL && !(parm->flags & FLAG_GLOBAL))
			continue;
		if (parm->p_class == P_SEPARATOR) {
			heading = parm->label;
			continue;
		}
		if (parm->flags & FLAG_HIDE) continue;
		if (snum >= 0) {
			if (printers & !(parm->flags & FLAG_PRINT)) continue;
			if (!printers & !(parm->flags & FLAG_SHARE)) continue;
		}

		if (!( parm_filter & FLAG_ADVANCED )) {
			if (!(parm->flags & FLAG_BASIC)) {
					void *ptr = parm->ptr;

				if (parm->p_class == P_LOCAL && snum >= 0) {
					ptr = lp_local_ptr(snum, ptr);
				}

				switch (parm->type) {
				case P_CHAR:
					if (*(char *)ptr == (char)(parm->def.cvalue)) continue;
					break;

				case P_LIST:
					if (!str_list_compare(*(char ***)ptr, (char **)(parm->def.lvalue))) continue;
					break;

				case P_STRING:
				case P_USTRING:
					if (!strcmp(*(char **)ptr,(char *)(parm->def.svalue))) continue;
					break;

				case P_GSTRING:
				case P_UGSTRING:
					if (!strcmp((char *)ptr,(char *)(parm->def.svalue))) continue;
					break;

				case P_BOOL:
				case P_BOOLREV:
					if (*(BOOL *)ptr == (BOOL)(parm->def.bvalue)) continue;
					break;

				case P_INTEGER:
				case P_OCTAL:
					if (*(int *)ptr == (int)(parm->def.ivalue)) continue;
					break;


				case P_ENUM:
					if (*(int *)ptr == (int)(parm->def.ivalue)) continue;
					break;
				case P_SEP:
					continue;
					}
			}
			if (printers && !(parm->flags & FLAG_PRINT)) continue;
		}

		if ((parm_filter & FLAG_WIZARD) && !(parm->flags & FLAG_WIZARD)) continue;
		
		if ((parm_filter & FLAG_ADVANCED) && !(parm->flags & FLAG_ADVANCED)) continue;
		
		if (heading && heading != last_heading) {
			printf("<tr><td></td></tr><tr><td><b><u>%s</u></b></td></tr>\n", _(heading));
			last_heading = heading;
		}
		show_parameter(snum, parm);
	}
}

/****************************************************************************
  load the smb.conf file into loadparm.
****************************************************************************/
static BOOL load_config(BOOL save_def)
{
	lp_resetnumservices();
	return lp_load(dyn_CONFIGFILE,False,save_def,False);
}

/****************************************************************************
  write a config file 
****************************************************************************/
static void write_config(FILE *f, BOOL show_defaults)
{
	fprintf(f, "# Samba config file created using SWAT\n");
	fprintf(f, "# from %s (%s)\n", cgi_remote_host(), cgi_remote_addr());
	fprintf(f, "# Date: %s\n\n", timestring(False));
	
	lp_dump(f, show_defaults, iNumNonAutoPrintServices);
}

/****************************************************************************
  save and reload the smb.conf config file 
****************************************************************************/
static int save_reload(int snum)
{
	FILE *f;
	struct stat st;

	f = sys_fopen(dyn_CONFIGFILE,"w");
	if (!f) {
		printf(_("failed to open %s for writing"), dyn_CONFIGFILE);
		printf("\n");
		return 0;
	}

	/* just in case they have used the buggy xinetd to create the file */
	if (fstat(fileno(f), &st) == 0 &&
	    (st.st_mode & S_IWOTH)) {
#if defined HAVE_FCHMOD
		fchmod(fileno(f), S_IWUSR | S_IRUSR | S_IRGRP | S_IROTH);
#else
		chmod(dyn_CONFIGFILE, S_IWUSR | S_IRUSR | S_IRGRP | S_IROTH);
#endif
	}

	write_config(f, False);
	if (snum)
		lp_dump_one(f, False, snum);
	fclose(f);

	lp_killunused(NULL);

	if (!load_config(False)) {
                printf(_("Can't reload %s"), dyn_CONFIGFILE);
		printf("\n");
                return 0;
        }
	iNumNonAutoPrintServices = lp_numservices();
	load_printers();