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Fix: copyright notices

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Fix: add user input validation in backend
This commit is contained in:
jcorporation 2018-11-27 17:22:45 +00:00
parent 8266e1bc8a
commit 0cc0e54e0c
6 changed files with 143 additions and 8 deletions
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1
CMakeLists.txt
View File

@ -32,6 +32,7 @@ set(SOURCES
src/mympd.c
src/mpd_client.c
src/list.c
src/validate.c
dist/src/mongoose/mongoose.c
dist/src/frozen/frozen.c
dist/src/inih/ini.c

20
src/list.c
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@ -1,3 +1,23 @@
/* myMPD
(c) 2018 Juergen Mang <mail@jcgames.de>
This project's homepage is: https://github.com/jcorporation/mympd
This linked list implementation is based on: https://github.com/joshkunz/ashuffle
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; version 2 of the License.
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.,
Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdlib.h>
#include <string.h>
#include <time.h>

20
src/list.h
View File

@ -1,3 +1,23 @@
/* myMPD
(c) 2018 Juergen Mang <mail@jcgames.de>
This project's homepage is: https://github.com/jcorporation/mympd
This linked list implementation is based on: https://github.com/joshkunz/ashuffle
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; version 2 of the License.
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.,
Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
struct node {
char *data;
long value;

13
src/mpd_client.c
View File

@ -33,6 +33,7 @@
#include <mpd/client.h>
#include "mpd_client.h"
#include "validate.h"
#include "config.h"
#include "../dist/src/frozen/frozen.h"
@ -449,6 +450,8 @@ void callback_mympd(struct mg_connection *nc, const struct mg_str msg) {
//rename smart playlist
char old_pl_file[400];
char new_pl_file[400];
sanitize_string(p_charbuf1);
sanitize_string(p_charbuf2);
snprintf(old_pl_file, 400, "%s/smartpls/%s", config.varlibdir, p_charbuf1);
snprintf(new_pl_file, 400, "%s/smartpls/%s", config.varlibdir, p_charbuf2);
if (access(old_pl_file, F_OK ) != -1) {
@ -623,6 +626,7 @@ void callback_mympd(struct mg_connection *nc, const struct mg_str msg) {
if (je == 1) {
//remove smart playlist
char pl_file[400];
sanitize_string(p_charbuf1);
snprintf(pl_file, 400, "%s/smartpls/%s", config.varlibdir, p_charbuf1);
if (access(pl_file, F_OK ) != -1 )
unlink(pl_file);
@ -1353,6 +1357,7 @@ bool mympd_state_get(char *name, char *value) {
size_t n = 0;
ssize_t read;
sanitize_string(name);
snprintf(cfgfile, 400, "%s/state/%s", config.varlibdir, name);
FILE *fp = fopen(cfgfile, "r");
if (fp == NULL) {
@ -1374,6 +1379,8 @@ bool mympd_state_get(char *name, char *value) {
bool mympd_state_set(const char *name, const char *value) {
char tmpfile[400];
char cfgfile[400];
sanitize_string(name);
snprintf(cfgfile, 400, "%s/state/%s", config.varlibdir, name);
snprintf(tmpfile, 400, "%s/tmp/%s", config.varlibdir, name);
@ -1395,6 +1402,7 @@ int mympd_syscmd(char *buffer, char *cmd, int order) {
size_t n = 0;
ssize_t read;
sanitize_string(cmd);
snprintf(filename, 400, "%s/syscmds/%d%s", config.etcdir, order, cmd);
FILE *fp = fopen(filename, "r");
if (fp == NULL) {
@ -1878,6 +1886,7 @@ int mympd_put_browse(char *buffer, char *path, unsigned int offset, char *filter
) {
if (entities_returned++)
len += json_printf(&out, ",");
sanitize_string(plName);
snprintf(smartpls_file, 400, "%s/smartpls/%s", config.varlibdir, plName);
if (access(smartpls_file, F_OK ) != -1)
smartpls = true;
@ -2050,6 +2059,7 @@ int mympd_put_playlists(char *buffer, unsigned int offset, char *filter) {
if (entities_returned++)
len += json_printf(&out, ", ");
snprintf(smartpls_file, 400, "%s/smartpls/%s", config.varlibdir, plpath);
sanitize_string(plpath);
if (access(smartpls_file, F_OK ) != -1)
smartpls = true;
else
@ -2116,6 +2126,7 @@ int mympd_put_playlist_list(char *buffer, char *uri, unsigned int offset, char *
}
mpd_entity_free(entity);
}
sanitize_string(uri);
snprintf(smartpls_file, 400, "%s/smartpls/%s", config.varlibdir, uri);
if (access(smartpls_file, F_OK ) != -1)
smartpls = true;
@ -2392,6 +2403,7 @@ int mympd_smartpls_put(char *buffer, char *playlist) {
int len = 0;
struct json_out out = JSON_OUT_BUF(buffer, MAX_SIZE);
sanitize_string(playlist);
snprintf(pl_file, 400, "%s/smartpls/%s", config.varlibdir, playlist);
char *content = json_fread(pl_file);
je = json_scanf(content, strlen(content), "{type: %Q }", &smartpltype);
@ -2436,6 +2448,7 @@ int mympd_smartpls_put(char *buffer, char *playlist) {
int mympd_smartpls_save(char *smartpltype, char *playlist, char *tag, char *searchstr, int maxentries, int timerange) {
char tmp_file[400];
char pl_file[400];
sanitize_string(playlist);
snprintf(tmp_file, 400, "%s/tmp/%s", config.varlibdir, playlist);
snprintf(pl_file, 400, "%s/smartpls/%s", config.varlibdir, playlist);
if (strcmp(smartpltype, "sticker") == 0) {

55
src/validate.c Normal file
View File

@ -0,0 +1,55 @@
/* myMPD
(c) 2018 Juergen Mang <mail@jcgames.de>
This project's homepage is: https://github.com/jcorporation/mympd
myMPD ist fork of:
ympd
(c) 2013-2014 Andrew Karpow <andy@ndyk.de>
This project's homepage is: http://www.ympd.org
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; version 2 of the License.
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.,
Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include <stdio.h>
#include "validate.h"
void sanitize_string(const char *data) {
static char ok_chars[] = "abcdefghijklmnopqrstuvwxyz"
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"1234567890_-. ";
char *cp = data;
const char *end = data + strlen(data);
for (cp += strspn(cp, ok_chars); cp != end; cp += strspn(cp, ok_chars))
*cp = '_';
}
int validate_path(char *path, const char *basepath) {
char *rpath = NULL;
char *ptr;
ptr = realpath(path, rpath);
if (ptr == NULL)
return 1;
if (strncmp(basepath, ptr, strlen(basepath)) == 0) {
free(rpath);
return 0;
}
else {
free(rpath);
return 1;
}
}

26
src/validate.h Normal file
View File

@ -0,0 +1,26 @@
/* myMPD
(c) 2018 Juergen Mang <mail@jcgames.de>
This project's homepage is: https://github.com/jcorporation/mympd
myMPD ist fork of:
ympd
(c) 2013-2014 Andrew Karpow <andy@ndyk.de>
This project's homepage is: http://www.ympd.org
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; version 2 of the License.
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.,
Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
void sanitize_string(const char *data);
int validate_path(char *path, const char *basepath);