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Prepare webOSbrew publishing audit and safe symlink autostart

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matze19999 committed 2026-10-06 13:43:00 +02:00
1 parent aaa8aa82e6
commit b81cb9a8a0
16 files changed
+185 -31
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native/autostart.h
+30 -22
View File
@@ -1,28 +1,36 @@
#ifndef HISTOGRAM_AUTOSTART_H
#define HISTOGRAM_AUTOSTART_H
#define BOOT_HOOK "/var/lib/webosbrew/init.d/60-histogramhyperion"
static const char boot_script[] = "#!/bin/sh\n# Histogram Hyperion own boot hook v1\n(\n attempt=0\n while [ -x /var/lib/webosbrew/init.d/60-histogramhyperion ] && [ \"$attempt\" -lt 120 ]; do\n result=$(timeout 12 luna-send -n 1 luna://org.webosbrew.histogramhyperion.service/start '{}' 2>&1)\n case \"$result\" in\n *'\"running\":true'*) exit 0 ;;\n esac\n attempt=$((attempt + 1))\n sleep 5\n done\n echo 'Histogram Hyperion boot start cancelled or timed out'\n) >/var/lib/webosbrew/histogramhyperion-boot.log 2>&1 </dev/null &\nexit 0\n";
static bool boot_enabled(void){return access(BOOT_HOOK,X_OK)==0;}
static bool set_boot(bool enabled){
struct stat st;
if(lstat(BOOT_HOOK,&st)==0){
if(!S_ISREG(st.st_mode))return false;
char existing[sizeof(boot_script)];int fd=open(BOOT_HOOK,O_RDONLY|O_NOFOLLOW|O_CLOEXEC);if(fd<0)return false;
ssize_t size=read(fd,existing,sizeof(existing));close(fd);
if(size!=(ssize_t)(sizeof(boot_script)-1) || memcmp(existing,boot_script,(size_t)size)!=0)return false;
if(!enabled)return unlink(BOOT_HOOK)==0;
return chmod(BOOT_HOOK,0755)==0;
#ifndef BOOT_DIRECTORY
#define BOOT_DIRECTORY "/var/lib/webosbrew/init.d"
#endif
#ifndef BOOT_SCRIPT
#define BOOT_SCRIPT "/media/developer/apps/usr/palm/services/org.webosbrew.histogramhyperion.service/boot.sh"
#endif
#define BOOT_HOOK BOOT_DIRECTORY "/60-histogramhyperion"
/* Exact pre-0.6.1 hook; only this known own file may be migrated. */
static const char legacy_boot_script[] = "#!/bin/sh\n# Histogram Hyperion own boot hook v1\n(\n attempt=0\n while [ -x /var/lib/webosbrew/init.d/60-histogramhyperion ] && [ \"$attempt\" -lt 120 ]; do\n result=$(timeout 12 luna-send -n 1 luna://org.webosbrew.histogramhyperion.service/start '{}' 2>&1)\n case \"$result\" in\n *'\"running\":true'*) exit 0 ;;\n esac\n attempt=$((attempt + 1))\n sleep 5\n done\n echo 'Histogram Hyperion boot start cancelled or timed out'\n) >/var/lib/webosbrew/histogramhyperion-boot.log 2>&1 </dev/null &\nexit 0\n";
/* 0: absent, 1: own legacy copy, 2: own symlink, -1: foreign/error. */
static int boot_hook_kind(void){
struct stat st;if(lstat(BOOT_HOOK,&st)!=0)return errno==ENOENT?0:-1;
if(S_ISLNK(st.st_mode)){
char target[sizeof(BOOT_SCRIPT)+1];ssize_t n=readlink(BOOT_HOOK,target,sizeof(target));
return n==(ssize_t)(sizeof(BOOT_SCRIPT)-1) && memcmp(target,BOOT_SCRIPT,(size_t)n)==0?2:-1;
}
if(errno!=ENOENT)return false;
if(!enabled)return true;
if(mkdir("/var/lib/webosbrew",0755)!=0 && errno!=EEXIST)return false;
if(mkdir("/var/lib/webosbrew/init.d",0755)!=0 && errno!=EEXIST)return false;
int fd=open(BOOT_HOOK ".tmp",O_WRONLY|O_CREAT|O_EXCL|O_CLOEXEC|O_NOFOLLOW,0700);if(fd<0)return false;
size_t used=0;bool ok=true;
while(used<sizeof(boot_script)-1){ssize_t n=write(fd,boot_script+used,sizeof(boot_script)-1-used);if(n<=0){ok=false;break;}used+=(size_t)n;}
if(ok)ok=fchmod(fd,0755)==0 && fsync(fd)==0;
if(close(fd)!=0)ok=false;
if(ok)ok=rename(BOOT_HOOK ".tmp",BOOT_HOOK)==0;
if(!S_ISREG(st.st_mode))return -1;
char data[sizeof(legacy_boot_script)];int fd=open(BOOT_HOOK,O_RDONLY|O_NOFOLLOW|O_CLOEXEC);if(fd<0)return -1;
ssize_t n=read(fd,data,sizeof(data));close(fd);
return n==(ssize_t)(sizeof(legacy_boot_script)-1) && memcmp(data,legacy_boot_script,(size_t)n)==0?1:-1;
}
static bool boot_enabled(void){return boot_hook_kind()>0 && access(BOOT_HOOK,X_OK)==0;}
static bool set_boot(bool enabled){
int kind=boot_hook_kind();if(kind<0)return false;
if(!enabled)return kind==0 || unlink(BOOT_HOOK)==0;
if(access(BOOT_SCRIPT,X_OK)!=0)return false;
if(kind==2)return true;
if(mkdir(BOOT_DIRECTORY,0755)!=0 && errno!=EEXIST)return false;
/* Never overwrite another process's temporary file or a foreign hook. */
if(symlink(BOOT_SCRIPT,BOOT_HOOK ".tmp")!=0)return false;
bool ok=rename(BOOT_HOOK ".tmp",BOOT_HOOK)==0;
if(!ok)unlink(BOOT_HOOK ".tmp");
return ok;
}