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drop privileges before reading environment

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This commit is contained in:
Michael Klein 2016-01-06 22:52:37 +01:00
parent b10e54cdee
commit b14f89e9d4
1 changed files with 9 additions and 12 deletions
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21
EnvScreen.c
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@ -60,23 +60,20 @@ static inline void addLine(const char* line, Vector* lines, Panel* panel, const
static void EnvScreen_scan(EnvScreen* this, Vector* lines, IncSet* inc) {
Panel* panel = this->display;
int idx = MAX(Panel_getSelectedIndex(panel), 0);
uid_t uid = getuid();
Panel_prune(panel);
if (uid == 0 || uid == this->process->st_uid) {
char *env = Platform_getProcessEnv(this->process->pid);
if (env) {
for (char *p = env; *p; p = strrchr(p, 0)+1)
addLine(p, lines, panel, IncSet_filter(inc));
free(env);
}
else {
addLine("Could not read process environment.", lines, panel, IncSet_filter(inc));
}
uid_t euid = geteuid();
seteuid(getuid());
char *env = Platform_getProcessEnv(this->process->pid);
seteuid(euid);
if (env) {
for (char *p = env; *p; p = strrchr(p, 0)+1)
addLine(p, lines, panel, IncSet_filter(inc));
free(env);
}
else {
addLine("Process belongs to different user.", lines, panel, IncSet_filter(inc));
addLine("Could not read process environment.", lines, panel, IncSet_filter(inc));
}
Vector_insertionSort(lines);