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Changed user for security

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This commit is contained in:
Nate Choe
2022-01-30 12:56:05 -06:00
parent e05896356f
commit f3694d3b43
3 changed files with 22 additions and 288 deletions
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2
Makefile
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@@ -13,7 +13,9 @@ work/%.o: src/%.c $(wildcard src/include/*.h)
$(CC) $(CFLAGS) $< -c -o $@
install: build/$(OUT)
useradd -M swebs
cp build/$(OUT) $(INSTALLDIR)/$(OUT)
uninstall: $(INSTALLDIR)/$(OUT)
userdel swebs
rm $(INSTALLDIR)/$(OUT)

287
example/logs
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@@ -1,287 +0,0 @@
[2022-01-30T17:15:55Z] swebs started
[2022-01-30T17:15:58Z] Accepting a stream failed
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[2022-01-30T17:22:52Z] swebs started
[2022-01-30T17:22:56Z] Accepting a stream failed
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21
src/main.c
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@@ -22,9 +22,11 @@
#include <assert.h>
#include <stdint.h>
#include <pwd.h>
#include <fcntl.h>
#include <unistd.h>
#include <pthread.h>
#include <sys/types.h>
#include <util.h>
#include <runner.h>
@@ -90,7 +92,6 @@ int main(int argc, char **argv) {
}
}
if (sitefile == NULL) {
fprintf(stderr, "No sitefile configured\n");
exit(EXIT_FAILURE);
@@ -122,6 +123,24 @@ int main(int argc, char **argv) {
exit(EXIT_FAILURE);
}
{
struct passwd *swebs = getpwnam("swebs");
if (swebs == NULL)
createLog("Couldn't find swebs user");
else
if (seteuid(swebs->pw_uid))
createLog("seteuid() failed");
struct passwd *root = getpwnam("root");
if (root == NULL) {
createLog("Couldn't find root user, quitting");
exit(EXIT_FAILURE);
}
if (geteuid() == root->pw_uid) {
createLog("swebs should not be run as root");
exit(EXIT_FAILURE);
}
}
int *pending = calloc(processes - 1, sizeof(int));
int (*notify)[2] = malloc(sizeof(int[2]) * (processes - 1));
pthread_t *threads = malloc(sizeof(pthread_t) * (processes - 1));