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SecBSD's official ports repository

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This commit is contained in:
purplerain 2023-08-16 22:26:55 +00:00
commit 2c0afcbbf3
Signed by: purplerain
GPG key ID: F42C07F07E2E35B7
64331 changed files with 5339189 additions and 0 deletions
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72
net/hping/patches/patch-main_c Normal file
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@ -0,0 +1,72 @@
- drop privileges to a dedicated user
--- main.c.orig Fri Dec 26 15:31:29 2014
+++ main.c Sun Dec 4 20:59:40 2016
@@ -27,6 +27,8 @@
#include <sys/time.h>
#include <sys/types.h>
#include <pcap.h>
+#include <pwd.h>
+#include <errno.h>
#include "hping2.h"
@@ -254,6 +256,21 @@ int main(int argc, char **argv)
exit(1);
}
+ if (!getuid()) {
+ struct passwd *pw;
+ pw = getpwnam("_hping");
+ if (pw == NULL) {
+ printf("[main] can't drop privs: no such user\n");
+ exit(1);
+ }
+ if (setgroups(1, &pw->pw_gid) == -1 ||
+ setresgid(pw->pw_gid, pw->pw_gid, pw->pw_gid) == -1 ||
+ setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid) == -1) {
+ printf("[main] can't drop privs: %s\n", strerror(errno));
+ exit(1);
+ }
+ }
+
/* get physical layer header size */
if ( get_linkhdr_size(ifname) == -1 ) {
printf("[main] physical layer header size unknown\n");
@@ -324,24 +341,24 @@ int main(int argc, char **argv)
}
if (opt_rawipmode) {
- strcat(setflags, "raw IP mode");
+ strlcat(setflags, "raw IP mode", sizeof(setflags));
hdr_size = IPHDR_SIZE;
} else if (opt_icmpmode) {
- strcat(setflags, "icmp mode");
+ strlcat(setflags, "icmp mode", sizeof(setflags));
hdr_size = IPHDR_SIZE + ICMPHDR_SIZE;
} else if (opt_udpmode) {
- strcat(setflags, "udp mode");
+ strlcat(setflags, "udp mode", sizeof(setflags));
hdr_size = IPHDR_SIZE + UDPHDR_SIZE;
} else {
- if (tcp_th_flags & TH_RST) strcat(setflags, "R");
- if (tcp_th_flags & TH_SYN) strcat(setflags, "S");
- if (tcp_th_flags & TH_ACK) strcat(setflags, "A");
- if (tcp_th_flags & TH_FIN) strcat(setflags, "F");
- if (tcp_th_flags & TH_PUSH) strcat(setflags, "P");
- if (tcp_th_flags & TH_URG) strcat(setflags, "U");
- if (tcp_th_flags & TH_X) strcat(setflags, "X");
- if (tcp_th_flags & TH_Y) strcat(setflags, "Y");
- if (setflags[0] == '\0') strcat(setflags, "NO FLAGS are");
+ if (tcp_th_flags & TH_RST) strlcat(setflags, "R", sizeof(setflags));
+ if (tcp_th_flags & TH_SYN) strlcat(setflags, "S", sizeof(setflags));
+ if (tcp_th_flags & TH_ACK) strlcat(setflags, "A", sizeof(setflags));
+ if (tcp_th_flags & TH_FIN) strlcat(setflags, "F", sizeof(setflags));
+ if (tcp_th_flags & TH_PUSH) strlcat(setflags, "P", sizeof(setflags));
+ if (tcp_th_flags & TH_URG) strlcat(setflags, "U", sizeof(setflags));
+ if (tcp_th_flags & TH_X) strlcat(setflags, "X", sizeof(setflags));
+ if (tcp_th_flags & TH_Y) strlcat(setflags, "Y", sizeof(setflags));
+ if (setflags[0] == '\0') strlcat(setflags, "NO FLAGS are", sizeof(setflags));
hdr_size = IPHDR_SIZE + TCPHDR_SIZE;
}