Cool_Tools/lindbergh-loader
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Hook the setenv function to fix display variable

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This commit is contained in:
Bobby Dilley 2023-11-18 22:34:10 +00:00
parent 54272aef11
commit 231be58dfa
1 changed files with 31 additions and 2 deletions
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33
src/lindbergh/hook.c
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@ -108,7 +108,6 @@ static void handleSegfault(int signal, siginfo_t *info, void *ptr)
} }
} }
void __attribute__((constructor)) hook_init() void __attribute__((constructor)) hook_init()
{ {
printf("SEGA Lindbergh Loader\nRobert Dilley 2022\nNot for public consumption\n\n"); printf("SEGA Lindbergh Loader\nRobert Dilley 2022\nNot for public consumption\n\n");
@ -121,7 +120,7 @@ void __attribute__((constructor)) hook_init()
initConfig(); initConfig();
if(initPatch() != 0) if (initPatch() != 0)
exit(1); exit(1);
if (initEeprom() != 0) if (initEeprom() != 0)
@ -494,3 +493,33 @@ int connect(int sockfd, const struct sockaddr *addr, socklen_t addrlen)
return _connect(sockfd, addr, addrlen); return _connect(sockfd, addr, addrlen);
} }
/**
* Stop the game changing the DISPLAY environment variable
*/
int setenv(const char *name, const char *value, int overwrite)
{
int (*_setenv)(const char *name, const char *value, int overwrite) = dlsym(RTLD_NEXT, "setenv");
if (strcmp(name, "DISPLAY") == 0)
{
return 0;
}
return _setenv(name, value, overwrite);
}
/**
* Stop the game unsetting the DISPLAY environment variable
*/
int unsetenv(const char *name)
{
int (*_unsetenv)(const char *name) = dlsym(RTLD_NEXT, "unsetenv");
if (strcmp(name, "DISPLAY") == 0)
{
return 0;
}
return _unsetenv(name);
}