projects / packages / arpd.git / blame
| Commit | Line | Data |
|---|---|---|
| 2d9dce24 PG |
1 | --- ./arpd.c.orig Tue Aug 21 13:26:27 2001 |
| 2 | +++ ./arpd.c Fri Aug 24 12:28:12 2001 | |
| 3 | @@ -21,6 +21,7 @@ | |
| 4 | #include <sys/socket.h> | |
| 5 | #include <netinet/in.h> | |
| 6 | #include <arpa/inet.h> | |
| 7 | +#include <pwd.h> | |
| 8 | ||
| 9 | #ifdef DEBUG | |
| 10 | static void arpd_print(char*, struct arpd_request*); | |
| 11 | @@ -28,10 +29,25 @@ | |
| 12 | #define arpd_print(x,y) | |
| 13 | #endif | |
| 14 | ||
| 15 | -/* these shouldn't change for ipv4 */ | |
| 16 | +/* these shouldn't change for ipv4 */ | |
| 17 | #define ARPD_TRIEWIDTH 256 | |
| 7f8abf2f | 18 | #define ARPD_TRIEDEPTH 16 |
| 2d9dce24 PG |
19 | |
| 20 | +/* usage string */ | |
| 21 | +static char* usage= | |
| 08d7125f JB |
22 | +"ARP daemon - version 1.0.2 - PLD modified\n\ |
| 23 | +Usage: arpd -u user\n\ | |
| 24 | +-u user, which you want to run this deamon\n\ | |
| 25 | +\n\ | |
| 26 | +The user you will take must have RW access to /dev/arpd.\n\ | |
| 27 | +If you don't know what to choice take root.\n\ | |
| 28 | +\n\ | |
| 2d9dce24 PG |
29 | +"; |
| 30 | + | |
| 31 | +void show_usage() { | |
| 32 | + fprintf(stdout,usage); | |
| 33 | +} | |
| 34 | + | |
| 35 | union arpd_triedef | |
| 36 | { | |
| 37 | union arpd_triedef * hash; | |
| 38 | @@ -54,7 +70,34 @@ | |
| 39 | struct arpd_request req; | |
| 40 | struct arpd_request *rep; | |
| 41 | ||
| 42 | + char* cmd = NULL; | |
| 43 | + unsigned int uid_num = 0; | |
| 44 | + struct passwd *pw; | |
| 45 | + char *account; | |
| 46 | + | |
| 47 | +if ((argc != 3)) { | |
| 48 | + fprintf(stdout,"Invalid option.\n"); | |
| 49 | + show_usage(); | |
| 50 | + exit(1); | |
| 51 | + } | |
| 52 | +else { | |
| 53 | #ifndef DEBUG | |
| 54 | + cmd = argv[1]; | |
| 55 | + | |
| 56 | + if (strcasecmp(cmd, "-u") == 0) { | |
| 57 | + account=argv[2]; | |
| 58 | + pw=getpwnam(account); | |
| 59 | + if (!pw) { | |
| 60 | + fprintf(stderr,"Unknown account.\n"); | |
| 61 | + exit(1); | |
| 62 | + } | |
| 63 | + uid_num=pw->pw_uid; | |
| 64 | + } | |
| 65 | + else { | |
| 66 | + fprintf(stderr,"Invalid option.\n"); | |
| 67 | + show_usage(); | |
| 68 | + exit(1); | |
| 69 | + } | |
| 70 | if (fork()) | |
| 71 | exit(0); | |
| 72 | ||
| 73 | @@ -72,14 +115,19 @@ | |
| 74 | if (fd > 2) | |
| 75 | close(fd); | |
| 76 | } | |
| 77 | - setsid(); | |
| 78 | + /* setsid(); */ | |
| 79 | + | |
| 80 | #endif | |
| 24546bce PG |
81 | |
| 82 | openlog ("arpd", LOG_PID | LOG_CONS, LOG_DAEMON); | |
| 83 | ||
| 84 | - syslog(LOG_NOTICE, "Initializing, version %s\n", ARPD_VERSION); | |
| 2d9dce24 | 85 | + syslog(LOG_NOTICE, "Initializing, modified version %s\n", ARPD_VERSION); |
| 24546bce | 86 | |
| 2d9dce24 PG |
87 | fd = open("/dev/arpd", O_RDWR); |
| 88 | + | |
| 89 | + /* Set proper UID */ | |
| 90 | + setuid(uid_num); | |
| 91 | + | |
| 24546bce | 92 | if (fd < 0) { |
| 2d9dce24 | 93 | syslog(LOG_CRIT, "cannot open /dev/arpd: %m"); |
| 24546bce | 94 | exit(-1); |
| 2d9dce24 | 95 | @@ -136,6 +184,7 @@ |
| db46488d | 96 | } |
| 2d9dce24 PG |
97 | |
| 98 | return 0; | |
| 99 | + } | |
| 100 | } | |
| 101 | ||
| 102 | static void arpd_update (struct arpd_request * entry) |