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-rw-r--r--launcher.c279
1 files changed, 0 insertions, 279 deletions
diff --git a/launcher.c b/launcher.c
deleted file mode 100644
index b51d0398..00000000
--- a/launcher.c
+++ /dev/null
@@ -1,279 +0,0 @@
-/*
- * ZeroTier One - Global Peer to Peer Ethernet
- * Copyright (C) 2012-2013 ZeroTier Networks LLC
- *
- * 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 3 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, see <http://www.gnu.org/licenses/>.
- *
- * --
- *
- * ZeroTier may be used and distributed under the terms of the GPLv3, which
- * are available at: http://www.gnu.org/licenses/gpl-3.0.html
- *
- * If you would like to embed ZeroTier into a commercial application or
- * redistribute it in a modified binary form, please contact ZeroTier Networks
- * LLC. Start here: http://www.zerotier.com/
- */
-
-/* Launcher for Linux/Unix/Mac */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <dirent.h>
-#include <unistd.h>
-#include <signal.h>
-#include <errno.h>
-#include <time.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/wait.h>
-
-#include "launcher.h"
-
-/* Must match first 16 bytes of EMBEDDED_VERSION_STAMP in Node.cpp */
-static const unsigned char EMBEDDED_VERSION_STAMP_KEY[16] = { 0x6d,0xfe,0xff,0x01,0x90,0xfa,0x89,0x57,0x88,0xa1,0xaa,0xdc,0xdd,0xde,0xb0,0x33 };
-
-const unsigned char EMBEDDED_LAUNCHER_VERSION_STAMP[20] = {
- 0x96,0xf0,0x00,0x08,0x18,0xff,0xc9,0xde,0xad,0xf0,0x0f,0xbe,0xef,0x30,0xce,0xa1, /* key */
- ZT_LAUNCHER_VERSION_MAJOR,
- ZT_LAUNCHER_VERSION_MINOR,
- (unsigned char)(((unsigned int)ZT_LAUNCHER_VERSION_REVISION) & 0xff), /* little-endian */
- (unsigned char)((((unsigned int)ZT_LAUNCHER_VERSION_REVISION) >> 8) & 0xff)
-};
-
-#define ZT_BINARY_NAME "zerotier-one"
-#define ZT_BINARY_UPDATE_PREFIX "zerotier-one_update."
-
-#define ZT_LAUNCHER_PIDFILE "zerotier-launcher.pid"
-#define ZT_ONE_PIDFILE "zerotier-one.pid"
-
-/* Load a file into newly malloc()'ed memory, len set to size */
-static unsigned char *loadFile(const char *path,unsigned long *len)
-{
- unsigned char *fbuf = (unsigned char *)0;
- FILE *f = fopen(path,"rb");
- if (f) {
- if (!fseek(f,0,SEEK_END)) {
- long l = ftell(f);
- if (l > 0) {
- fseek(f,0,SEEK_SET);
- fbuf = malloc(l);
- if (fbuf) {
- if (fread(fbuf,l,1,f) != 1) {
- free(fbuf);
- fbuf = (unsigned char *)0;
- } else *len = (unsigned long)l;
- }
- }
- }
- fclose(f);
- }
- return fbuf;
-}
-
-/* Scans a ZeroTier binary and determines its version from its embedded version code */
-static int findVersion(const unsigned char *bin,unsigned long len,unsigned int *major,unsigned int *minor,unsigned int *revision)
-{
- unsigned long i;
-
- if (len > 20) {
- for(i=0;i<(len - 20);++i) {
- if ((bin[i] == EMBEDDED_VERSION_STAMP_KEY[0])&&(!memcmp(bin + i,EMBEDDED_VERSION_STAMP_KEY,16))) {
- *major = bin[i + 16];
- *minor = bin[i + 17];
- *revision = ((unsigned int)bin[i + 18] & 0xff) | (((unsigned int)bin[i + 19] << 8) & 0xff00);
- return 1;
- }
- }
- }
-
- return 0;
-}
-
-/* Scan for updates and, if found, replace the main binary if possible */
-static int doUpdateBinaryIfNewer()
-{
- long pfxLen = strlen(ZT_BINARY_UPDATE_PREFIX);
- struct dirent dbuf,*d;
- int needUpdate;
- unsigned int major = 0,minor = 0,revision = 0;
- unsigned int existingMajor = 0,existingMinor = 0,existingRevision = 0;
- unsigned long binLen;
- unsigned char *bin;
- char oldname[1024];
- DIR *dir;
-
- binLen = 0;
- bin = loadFile(ZT_BINARY_NAME,&binLen);
- if (!((bin)&&(binLen)&&(findVersion(bin,binLen,&existingMajor,&existingMinor,&existingRevision)))) {
- if (bin)
- free(bin);
- return 0;
- }
- free(bin);
-
- dir = opendir(".");
- if (!dir)
- return 0;
- while (!readdir_r(dir,&dbuf,&d)) {
- if (!d) break;
- if (!strncasecmp(d->d_name,ZT_BINARY_UPDATE_PREFIX,pfxLen)) {
- binLen = 0;
- unsigned char *bin = loadFile(d->d_name,&binLen);
- if ((bin)&&(binLen)&&(findVersion(bin,binLen,&major,&minor,&revision))) {
- needUpdate = 0;
- if (major > existingMajor)
- needUpdate = 1;
- else if (major == existingMajor) {
- if (minor > existingMinor)
- needUpdate = 1;
- else if (minor == existingMinor) {
- if (revision > existingRevision)
- needUpdate = 1;
- }
- }
- free(bin);
- if (needUpdate) {
- /* fprintf(stderr,"zerotier-launcher: replacing %s with %s\n",ZT_BINARY_NAME,d->d_name); */
- sprintf(oldname,"%s.OLD",ZT_BINARY_NAME);
- if (!rename(ZT_BINARY_NAME,oldname)) {
- /* fprintf(stderr,"zerotier-launcher: %s -> %s\n",ZT_BINARY_NAME,oldname); */
- if (!rename(d->d_name,ZT_BINARY_NAME)) {
- /* fprintf(stderr,"zerotier-launcher: %s -> %s\nzerotier-launcher: delete %s\n",d->d_name,ZT_BINARY_NAME,oldname); */
- chmod(ZT_BINARY_NAME,0755);
- unlink(oldname);
- return 1;
- }
- }
- break;
- }
- }
- if (bin)
- free(bin);
- }
- }
- closedir(dir);
-
- return 0;
-}
-
-static volatile long childPid = 0;
-
-static void sigRepeater(int sig)
-{
- if (childPid > 0)
- kill(childPid,sig);
-}
-
-int main(int argc,char **argv)
-{
- const char *zerotierHome = ZT_DEFAULT_HOME;
- FILE *pidf;
- int status,exitCode;
- unsigned long timeStart;
- unsigned int numSubTwoSecondRuns;
-
- /* Pass on certain signals transparently to the subprogram to do with as it will */
- signal(SIGHUP,&sigRepeater);
- signal(SIGPIPE,SIG_IGN);
- signal(SIGUSR1,&sigRepeater);
- signal(SIGUSR2,&sigRepeater);
- signal(SIGALRM,SIG_IGN);
- signal(SIGURG,SIG_IGN);
- signal(SIGTERM,&sigRepeater);
- signal(SIGQUIT,&sigRepeater);
-
- if (argc == 2)
- zerotierHome = argv[1];
-
- if (chdir(zerotierHome)) {
- fprintf(stderr,"%s: fatal error: could not chdir to %s\n",argv[0],zerotierHome);
- return ZT_EXEC_RETURN_VALUE_UNRECOVERABLE_ERROR;
- }
-
- pidf = fopen(ZT_LAUNCHER_PIDFILE,"w");
- if (pidf) {
- fprintf(pidf,"%d",(int)getpid());
- fclose(pidf);
- }
-
- numSubTwoSecondRuns = 0;
- exitCode = ZT_EXEC_RETURN_VALUE_NORMAL_TERMINATION;
-
-restart_subprogram:
- /* We actually do this on every loop, which is fine. It picks up any
- * newer versions that are waiting and swaps them out for the current
- * running binary. */
- doUpdateBinaryIfNewer();
-
- timeStart = time(0);
- childPid = fork();
- if (childPid < 0) {
- fprintf(stderr,"%s: fatal error: could not fork(): %s\n",argv[0],strerror(errno));
- return ZT_EXEC_RETURN_VALUE_UNRECOVERABLE_ERROR;
- } else if (childPid) {
- pidf = fopen(ZT_ONE_PIDFILE,"w");
- if (pidf) {
- fprintf(pidf,"%d",(int)childPid);
- fclose(pidf);
- }
-
- status = ZT_EXEC_RETURN_VALUE_NO_BINARY;
-wait_for_subprogram_exit:
- if ((long)waitpid(childPid,&status,0) >= 0) {
- if (WIFEXITED(status)) {
- unlink(ZT_ONE_PIDFILE);
-
- if ((time(0) - timeStart) < 2) {
- /* Terminate abnormally if we appear to be looping in a tight loop
- * to avoid fork bombing if one exits abnormally without an abnormal
- * exit code. */
- if (++numSubTwoSecondRuns >= 16) {
- fprintf(stderr,"%s: fatal error: program exiting immediately in infinite loop\n",argv[0]);
- return ZT_EXEC_RETURN_VALUE_UNRECOVERABLE_ERROR;
- }
- }
-
- switch(WEXITSTATUS(status)) {
- case ZT_EXEC_RETURN_VALUE_NORMAL_TERMINATION:
- exitCode = ZT_EXEC_RETURN_VALUE_NORMAL_TERMINATION;
- goto exit_launcher;
- case ZT_EXEC_RETURN_VALUE_NO_BINARY:
- fprintf(stderr,"%s: fatal error: binary zerotier-one not found at %s\n",argv[0],zerotierHome);
- exitCode = ZT_EXEC_RETURN_VALUE_UNRECOVERABLE_ERROR;
- goto exit_launcher;
- case ZT_EXEC_RETURN_VALUE_TERMINATED_FOR_UPGRADE:
- case ZT_EXEC_RETURN_VALUE_PLEASE_RESTART:
- goto restart_subprogram;
- default:
- exitCode = status;
- goto exit_launcher;
- }
- }
- } else if (errno != EINTR) {
- fprintf(stderr,"%s: fatal error: waitpid() failed: %s\n",argv[0],strerror(errno));
- exitCode = ZT_EXEC_RETURN_VALUE_UNRECOVERABLE_ERROR;
- goto exit_launcher;
- } else {
- goto wait_for_subprogram_exit;
- }
- } else {
- execl(ZT_BINARY_NAME,ZT_BINARY_NAME,zerotierHome,(char *)0);
- exit(ZT_EXEC_RETURN_VALUE_NO_BINARY); /* only reached if execl succeeds */
- }
-
-exit_launcher:
- unlink(ZT_LAUNCHER_PIDFILE);
- return exitCode;
-}
generated by cgit v1.2.3 (git 2.39.1) at 2026-04-18 20:33:09 +0000