From 0c1fb321c442b19a8831544882709424a29663bb Mon Sep 17 00:00:00 2001 From: darkrose Date: Wed, 23 Sep 2015 23:32:36 +1000 Subject: [PATCH] initial commit --- CHANGELOG | 3 + LICENSE | 674 +++++++++++++++++++++++++++++++++++++++++++++++++++ Makefile | 61 +++++ README | 47 ++++ config.h | 9 + inc/vl-api.h | 21 ++ src/db.c | 292 ++++++++++++++++++++++ src/http.c | 184 ++++++++++++++ src/lib.c | 58 +++++ src/main.c | 199 +++++++++++++++ 10 files changed, 1548 insertions(+) create mode 100644 CHANGELOG create mode 100644 LICENSE create mode 100644 Makefile create mode 100644 README create mode 100644 config.h create mode 100644 inc/vl-api.h create mode 100644 src/db.c create mode 100644 src/http.c create mode 100644 src/lib.c create mode 100644 src/main.c diff --git a/CHANGELOG b/CHANGELOG new file mode 100644 index 0000000..d63c9b6 --- /dev/null +++ b/CHANGELOG @@ -0,0 +1,3 @@ +CHANGES: +0.1 + - initial release diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..94a9ed0 --- /dev/null +++ b/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..ff89749 --- /dev/null +++ b/Makefile @@ -0,0 +1,61 @@ +CC ?= gcc + +PREFIX ?= /usr +BINDIR ?= $(PREFIX)/bin +MANDIR ?= $(PREFIX)/share/man/man1 + +SRCDIR=src +INCDIR=inc + +TARGET=vl-checker +VERSION=0.1 + +TARGET_CFLAGS ?= $(shell mysql_config --cflags) -Wall -g -DTARGET=\"$(TARGET)\" -DVERSION=\"$(VERSION)\" -Iinc/ -I. $(CFLAGS) +TARGET_CPPFLAGS ?= $(CPPFLAGS) +TARGET_CLIBS ?= $(shell mysql_config --libs) $(CLIBS) +TARGET_LDFLAGS ?= $(LDFLAGS) + +OBJS=$(SRCDIR)/main.o $(SRCDIR)/db.o $(SRCDIR)/lib.o $(SRCDIR)/http.o +DISTFILES=man $(SRCDIR) $(INCDIR) config.h Makefile* CHANGELOG LICENSE README + +all: default + +default: $(TARGET) + +$(TARGET): $(OBJS) + $(CC) $(TARGET_LDFLAGS) -o $(TARGET) $(OBJS) $(TARGET_CLIBS) + +dist-base: + mkdir -p $(TARGET)-$(VERSION) + cp -Rt $(TARGET)-$(VERSION) $(DISTFILES) + +dist-gz: dist-base + tar czf $(TARGET)-$(VERSION).tar.gz $(TARGET)-$(VERSION) + rm -r $(TARGET)-$(VERSION) + +dist-bz2: dist-base + tar cjf $(TARGET)-$(VERSION).tar.bz2 $(TARGET)-$(VERSION) + rm -r $(TARGET)-$(VERSION) + +dist: dist-bz2 + +distclean: + rm -f $(OBJS) + +clean: distclean + rm -f $(TARGET)* + +install: $(TARGET) + install $(TARGET) $(BINDIR)/$(TARGET) + -install man/$(TARGET).1 $(MANDIR)/$(TARGET).1 + +uninstall: + rm -f $(BINDIR)/$(TARGET) + rm -f $(MANDIR)/$(TARGET).1 + +fresh: clean all + +$(SRCDIR)/%.o: $(SRCDIR)/%.c inc/vl-api.h config.h + $(CC) $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) -o $@ -c $< + +.PHONY: all default distclean dist dist-base dist-bz2 dist-gz clean fresh install uninstall diff --git a/README b/README new file mode 100644 index 0000000..9c13f03 --- /dev/null +++ b/README @@ -0,0 +1,47 @@ +======================================================================== + README +======================================================================== + +ABOUT: +This program is the backend status daemon for api.voxelands.com + +DEPENDENCIES: +vl-checker requires glibc, and mysql. It may work with + other C libraries, but this has not been tested. + +INSTALL: +If you're reading this then you've already unpacked the tarball, +so it's the usual 3 steps: +1) cd /path/to/voxelands-api +2) make +3) su -c "make install" + +UNINSTALL: +just cd to the voxelands-api directory and run "make uninstall" + +USE: +vl-checker [OPTION] + +OPTIONS: + +CONFIG: +The nodau config file is located at $XDG_CONFIG_HOME/nodau/nodau.conf + which is typically ~/.config/nodau/nodau.conf +The following config settings are currently in use: + SETTING VALUES + external_editor name of a text editor executable (vim,nano,etc) + force_builtin_editor true or false + import_old_db true or false + +LICENSE: +All of voxelands is licensed under the GPLv3, there's a copy of it in + LICENSE + +DEVELOPMENT: +A git repository for this code is hosted at: + https://gitlab.com/voxelands/voxelands-api +An IRC channel for development of this and other parts of voxelands is + at irc.entropynet.net #voxelands + +CHANGES: +see CHANGELOG diff --git a/config.h b/config.h new file mode 100644 index 0000000..faa97ad --- /dev/null +++ b/config.h @@ -0,0 +1,9 @@ +#ifndef _VL_API_CONFIG_H_ +#define _VL_API_CONFIG_H_ + +#define DB_HOST "localhost" +#define DB_USER "apiuser" +#define DB_PASS "apipass" +#define DB_NAME "voxelands" + +#endif diff --git a/inc/vl-api.h b/inc/vl-api.h new file mode 100644 index 0000000..68b4201 --- /dev/null +++ b/inc/vl-api.h @@ -0,0 +1,21 @@ +#ifndef _VL_API_H +#define _VL_API_H + +#include +#include +#include + +/* defined in db.c */ +int *db_getservers(int all); +int db_getserveraddr(int id, char* addr, char* port); +int db_updateserver(int id, char* name, char* mode, char* motd, int players_cnt, int public, char* version, char* features); +int db_updateplayer(int id, char* name, int server); + +/* defined in http.c */ +int http_get(char* host, char* port, char* url, char* buff, int size); + +/* defined in lib.c */ +int valid_mode(char*); +int valid_version(char*); + +#endif diff --git a/src/db.c b/src/db.c new file mode 100644 index 0000000..4314d59 --- /dev/null +++ b/src/db.c @@ -0,0 +1,292 @@ +/************************************************************************ +* db.c +* voxelands - api backend status daemon +* Copyright (C) Lisa Milne 2015 +* +* This file 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 3 of the License, or +* (at your option) any later version. +* +* This file 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, see +************************************************************************/ + +#include +#include + +#include "vl-api.h" +#include "config.h" + +#include +#include + +MYSQL *dbconn = NULL; +/* + +CREATE DATABASE voxelands ; + +USE voxelands ; + +CREATE TABLE `servers` ( + `id` INT(11) UNSIGNED NOT NULL AUTO_INCREMENT, + `name` VARCHAR (255) NOT NULL, + `addr` VARCHAR (255) NOT NULL, + `port` INT(11) UNSIGNED, + `mode` VARCHAR (20) NOT NULL, + `motd` VARCHAR (255) NOT NULL, + `players` INT(11) UNSIGNED NOT NULL DEFAULT '0', + `public` VARCHAR (10) NOT NULL, + `version` VARCHAR (50) NOT NULL, + `features` VARCHAR (255) NOT NULL, + `lastreply` INT(11) NOT NULL, + PRIMARY KEY (`id`) +) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_bin ; + +CREATE TABLE `players` ( + `id` INT(11) UNSIGNED NOT NULL AUTO_INCREMENT, + `name` VARCHAR(255) NOT NULL, + `hash` VARCHAR(255) NOT NULL, + `cookie` VARCHAR(255) NOT NULL, + `server` INT(11) UNSIGNED NOT NULL, + PRIMARY KEY (`id`) +) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_bin ; + +CREATE USER 'apiuser'@'localhost' IDENTIFIED BY 'apipass'; +GRANT SELECT,INSERT,UPDATE ON `servers` TO 'apiuser'@'localhost'; +GRANT SELECT,INSERT,UPDATE ON `players` TO 'apiuser'@'localhost'; + + */ + +int db_connect() +{ + MYSQL *c; + if ((dbconn = mysql_init(NULL)) == NULL) + return -1; + + c = mysql_real_connect(dbconn, DB_HOST, DB_USER, DB_PASS, DB_NAME, 0, NULL, 0); + if (!c) + return -1; + + return 0; +} + +int db_close() +{ + if (dbconn) + mysql_close(dbconn); + dbconn = NULL; + return 0; +} + +int *db_getservers(int all) +{ + char q[1024]; + int *r; + MYSQL_RES *result; + MYSQL_ROW row; + int rows; + int i; + + if (all) { + sprintf(q,"SELECT `id` FROM `servers`"); + }else{ + int lr = time(NULL); + lr -= 600; /* 10 minutes */ + sprintf(q,"SELECT `id` FROM `servers` WHERE `lastreply` > %d",lr); + } + + if (db_connect()) + return NULL; + + mysql_query(dbconn,q); + + result = mysql_store_result(dbconn); + if (!result) { + db_close(); + return NULL; + } + + rows = mysql_num_rows(result); + if (!rows) { + mysql_free_result(result); + db_close(); + return NULL; + } + + r = malloc(sizeof(int)*(rows+1)); + if (!r) { + mysql_free_result(result); + db_close(); + return NULL; + } + + for (i=0; (row = mysql_fetch_row(result)); i++) { + unsigned long *lengths; + lengths = mysql_fetch_lengths(result); + if (strncpy(q,row[0],lengths[0])) { + r[i] = strtol(q,NULL,10); + }else{ + r[i] = 0; + break; + } + } + + r[i] = 0; + + mysql_free_result(result); + + db_close(); + + return r; +} + +int db_getserveraddr(int id, char* addr, char* port) +{ + char q[1024]; + MYSQL_RES *result; + MYSQL_ROW row; + unsigned long *lengths; + + if (!id || !addr || !port) + return -1; + + sprintf(q,"SELECT `addr` , `port` FROM `servers` WHERE `id` = %d",id); + + if (db_connect()) + return -1; + + mysql_query(dbconn,q); + + result = mysql_store_result(dbconn); + if (!result) { + db_close(); + return -1; + } + + if (!mysql_num_rows(result)) { + mysql_free_result(result); + db_close(); + return -1; + } + + if (!(row = mysql_fetch_row(result))) { + mysql_free_result(result); + db_close(); + return -1; + } + + lengths = mysql_fetch_lengths(result); + if (!memcpy(addr,row[0],lengths[0])) { + mysql_free_result(result); + db_close(); + return -1; + } + addr[lengths[0]] = 0; + if (!memcpy(port,row[1],lengths[1])) { + mysql_free_result(result); + db_close(); + return -1; + } + port[lengths[1]] = 0; + + mysql_free_result(result); + + db_close(); + + return 0; +} + +int db_updateserver(int id, char* name, char* mode, char* motd, int players_cnt, int public, char* version, char* features) +{ + int l; + char q[4096]; + char e_name[512]; + char e_mode[512]; + char e_motd[512]; + char e_version[512]; + char e_features[512]; + + if (id < 1) + return -1; + + if (db_connect()) + return -1; + + l = strlen(name); + if (l > 255) { + db_close(); + return -1; + } + mysql_real_escape_string(dbconn,e_name,name,l); + + if (!valid_mode(mode)) + mode = "adventure"; + l = strlen(mode); + if (l > 255) { + db_close(); + return -1; + } + mysql_real_escape_string(dbconn,e_mode,mode,l); + + if (!motd) + motd = ""; + l = strlen(motd); + if (l > 255) { + db_close(); + return -1; + } + mysql_real_escape_string(dbconn,e_motd,motd,l); + + if (!valid_version(version)) + version = "???"; + l = strlen(version); + if (l > 255) { + db_close(); + return -1; + } + mysql_real_escape_string(dbconn,e_version,version,l); + + if (!features) + features = ""; + l = strlen(features); + if (l > 255) { + db_close(); + return -1; + } + mysql_real_escape_string(dbconn,e_features,features,l); + + sprintf( + q, + "UPDATE `servers` " + "SET `name` = '%s' , `mode` = '%s' , `motd` = '%s' , `players` = %d , `public` = %d , `version` = '%s' , `features` = '%s' , `lastreply` = %d " + "WHERE `id` = %d", + e_name, + e_mode, + e_motd, + players_cnt, + public, + e_version, + e_features, + (int)time(NULL), + id + ); + + mysql_query(dbconn,q); + + l = mysql_affected_rows(dbconn); + + db_close(); + + return l; +} + +int db_updateplayer(int id, char* name, int server) +{ + return -1; +} diff --git a/src/http.c b/src/http.c new file mode 100644 index 0000000..69e7dee --- /dev/null +++ b/src/http.c @@ -0,0 +1,184 @@ +/************************************************************************ +* http.c +* voxelands - api backend status daemon +* Copyright (C) Lisa Milne 2015 +* +* This file 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 3 of the License, or +* (at your option) any later version. +* +* This file 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, see +************************************************************************/ + +#include "vl-api.h" +#include +#include +#include +#include +#include +#include +#include +#include +#include + +int http_get(char* host, char* port, char* url, char* buff, int size) +{ + struct addrinfo hints; + struct addrinfo *addr; + int fd; + + fd_set rfds; + struct timeval tv; + int s; + + char* e; + int length; + int tlength; + char request[2048]; + char in[2048]; + + if (!strcmp(host,"0.0.0.0")) + return -1; + + length = sprintf( + request, + "GET %s HTTP/1.1\r\n" + "Host: %s\r\n" + "From: darkrose\r\n" + "User-Agent: Voxelands-API\r\n" + "Connection: close\r\n\r\n", + url, + host + ); + + if (!length) + return -2; + + memset(&hints, 0, sizeof(struct addrinfo)); + hints.ai_family = AF_UNSPEC; + hints.ai_socktype = SOCK_STREAM; + + /* resolve hostname */ + if (getaddrinfo(host, port, &hints, &addr)) + return -3; + + /* open socket */ + if ((fd = socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol)) == -1) { + freeaddrinfo(addr); + return -4; + } + + fcntl(fd, F_SETFL, O_NONBLOCK); + + /* connect to server */ + s = connect(fd, addr->ai_addr, addr->ai_addrlen); + if (s != 0) { + struct epoll_event event; + int efd = -1; + struct epoll_event events; + unsigned int count = -1; + int r = -1; + socklen_t rlen = sizeof(r); + + if (errno != EINPROGRESS) { + freeaddrinfo(addr); + shutdown(fd,2); + return -5; + } + + if ((efd = epoll_create(1)) == -1) { + freeaddrinfo(addr); + shutdown(fd,2); + return -5; + } + + event.data.fd = fd; + event.events = EPOLLOUT | EPOLLIN | EPOLLERR; + + if (epoll_ctl(efd, EPOLL_CTL_ADD, fd, &event) == -1) { + freeaddrinfo(addr); + shutdown(fd,2); + return -5; + } + + count = epoll_wait(efd, &events, 1, 1000); + + if (count < 0) { + freeaddrinfo(addr); + shutdown(fd,2); + return -5; + } + + if (getsockopt(fd, SOL_SOCKET, SO_ERROR, &r, &rlen) < 0) { + freeaddrinfo(addr); + shutdown(fd,2); + return -5; + } + + if (r != 0) { + freeaddrinfo(addr); + shutdown(fd,2); + return -5; + } + } + + /* get the page */ + write(fd,request,length); + + tlength = 0; + + tv.tv_sec = 0; + tv.tv_usec = 1000000; + FD_ZERO(&rfds); + FD_SET(fd, &rfds); + if (select(fd+1, &rfds, NULL, NULL, &tv) < 1) { + freeaddrinfo(addr); + shutdown(fd,2); + return -6; + } + + if (!FD_ISSET(fd,&rfds)) { + freeaddrinfo(addr); + shutdown(fd,2); + return -7; + } + + while (tlength < 2046) { + tv.tv_sec = 0; + tv.tv_usec = 100000; + FD_ZERO(&rfds); + FD_SET(fd, &rfds); + if (select(fd+1, &rfds, NULL, NULL, &tv) < 1 || !FD_ISSET(fd,&rfds)) + break; + length = read(fd,in,2047); + if (length < 1) + break; + if (tlength+length > 2047) + length = 2046-tlength; + memcpy(request+tlength,in,length); + tlength += length; + } + shutdown(fd,2); + freeaddrinfo(addr); + + if (tlength < 1) + return -8; + + request[tlength] = 0; + + e = strstr(request,"\r\n\r\n"); + if (!e) + return -9; + + if (!strncpy(buff,e+4,size)) + return -10; + + return 0; +} diff --git a/src/lib.c b/src/lib.c new file mode 100644 index 0000000..411ffa1 --- /dev/null +++ b/src/lib.c @@ -0,0 +1,58 @@ +/************************************************************************ +* lib.c +* voxelands - api backend status daemon +* Copyright (C) Lisa Milne 2015 +* +* This file 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 3 of the License, or +* (at your option) any later version. +* +* This file 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, see +************************************************************************/ + +#include "vl-api.h" +#include + +int valid_mode(char* txt) +{ + if (!txt || !txt[0]) + return 0; + if (!strcmp(txt,"creative")) + return 1; + if (!strcmp(txt,"survival")) + return 1; + if (!strcmp(txt,"adventure")) + return 1; + if (!strcmp(txt,"custom")) + return 1; + return 0; +} + +int valid_version(char* txt) +{ + char* dot; + char* colon; + + if (!txt || !txt[0]) + return 0; + dot = strchr(txt,'.'); + if (!dot) + return 0; + if (dot-txt != 4) + return 0; + colon = strchr(dot,':'); + if (colon) { + if (colon-dot != 3) + return 0; + }else if (strlen(dot) != 3) { + return 0; + } + return 1; +} diff --git a/src/main.c b/src/main.c new file mode 100644 index 0000000..954bc52 --- /dev/null +++ b/src/main.c @@ -0,0 +1,199 @@ +/************************************************************************ +* main.c +* voxelands - api backend status daemon +* Copyright (C) Lisa Milne 2015 +* +* This file 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 3 of the License, or +* (at your option) any later version. +* +* This file 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, see +************************************************************************/ + +#include "vl-api.h" +#include +#include +#include +#include + +static void check_server(int id) +{ + char addr[512]; + char port[512]; + char buff[1024]; + char players[1024]; + char* version; + char* name; + char* motd; + char* adr; + char* prt; + char* mode; + char* public; + int pub; + char* privs; + char* features; + int players_cnt; + + if (db_getserveraddr(id,addr,port)) + return; + if (http_get(addr,port,"/api",buff,1024)) + return; + if (http_get(addr,port,"/api/players",players,1024)) + return; + players_cnt = strtol(players,NULL,10); + version = buff; + name = strchr(version,'\n'); + if (!name) + return; + *name = 0; + name++; + motd = strchr(name,'\n'); + if (!motd) + return; + *motd = 0; + motd++; + adr = strchr(motd,'\n'); + if (!adr) + return; + *adr = 0; + adr++; + prt = strchr(adr,'\n'); + if (!prt) + return; + *prt = 0; + prt++; + mode = strchr(prt,'\n'); + if (!mode) + return; + *mode = 0; + mode++; + public = strchr(mode,'\n'); + if (!public) + return; + *public = 0; + public++; + pub = !strcmp(public,"public"); + privs = strchr(public,'\n'); + if (!privs) + return; + *privs = 0; + privs++; + features = strchr(privs,'\n'); + if (!features) + return; + db_updateserver(id,name,mode,motd,players_cnt,pub,version,features); +} + +/* print help and usage */ +static void usage() +{ + printf( + "%s %s - voxelands api backend status daemon\n\n" + "USAGE: %s [OPTIONS]\n\n" + "OPTIONS:\n" + " -d Daemonise the process (default).\n" + " -D Do not daemonise the process.\n" + " -? Show this help info.\n", + TARGET, + VERSION, + TARGET + ); +} + +int main(int argc, char** argv) +{ + int i; + int k; + int *s; + time_t b; + time_t e; + int daemonise = 1; + + for (i=1; i 250) { + sleep(1); + }else{ + sleep(300-(e-b)); + } + } + + return 0; +}