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- Committer: Teddy Hogeborn
- Date: 2016-03-05 21:47:56 UTC
- mfrom: (822 trunk)
- mto: This revision was merged to the branch mainline in revision 823.
- Revision ID: teddy@recompile.se-20160305214756-loaavopcjshnr5rl
Merge from trunk.
added
removed
plugins.d/mandos-client.c
817
817
818
818
/* Set effective uid to 0, return errno */
819
819
__attribute__((warn_unused_result))
820
error_t raise_privileges(void){
821
error_t old_errno = errno;
822
error_t ret_errno = 0;
820
int raise_privileges(void){
821
int old_errno = errno;
822
int ret = 0;
823
823
if(seteuid(0) == -1){
824
ret_errno = errno;
824
ret = errno;
825
825
}
826
826
errno = old_errno;
827
return ret_errno;
827
return ret;
828
828
}
829
829
830
830
/* Set effective and real user ID to 0. Return errno. */
831
831
__attribute__((warn_unused_result))
832
error_t raise_privileges_permanently(void){
833
error_t old_errno = errno;
834
error_t ret_errno = raise_privileges();
835
if(ret_errno != 0){
832
int raise_privileges_permanently(void){
833
int old_errno = errno;
834
int ret = raise_privileges();
835
if(ret != 0){
836
836
errno = old_errno;
837
return ret_errno;
837
return ret;
838
838
}
839
839
if(setuid(0) == -1){
840
ret_errno = errno;
840
ret = errno;
841
841
}
842
842
errno = old_errno;
843
return ret_errno;
843
return ret;
844
844
}
845
845
846
846
/* Set effective user ID to unprivileged saved user ID */
847
847
__attribute__((warn_unused_result))
848
error_t lower_privileges(void){
849
error_t old_errno = errno;
850
error_t ret_errno = 0;
848
int lower_privileges(void){
849
int old_errno = errno;
850
int ret = 0;
851
851
if(seteuid(uid) == -1){
852
ret_errno = errno;
852
ret = errno;
853
853
}
854
854
errno = old_errno;
855
return ret_errno;
855
return ret;
856
856
}
857
857
858
858
/* Lower privileges permanently */
859
859
__attribute__((warn_unused_result))
860
error_t lower_privileges_permanently(void){
861
error_t old_errno = errno;
862
error_t ret_errno = 0;
860
int lower_privileges_permanently(void){
861
int old_errno = errno;
862
int ret = 0;
863
863
if(setuid(uid) == -1){
864
ret_errno = errno;
864
ret = errno;
865
865
}
866
866
errno = old_errno;
867
return ret_errno;
867
return ret;
868
868
}
869
869
870
870
/* Helper function to add_local_route() and delete_local_route() */
1623
1623
__attribute__((nonnull, warn_unused_result))
1624
1624
bool get_flags(const char *ifname, struct ifreq *ifr){
1625
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int ret;
1626
error_t ret_errno;
1626
int old_errno;
1627
1627
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int s = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
1629
1629
if(s < 0){
1630
ret_errno = errno;
1630
old_errno = errno;
1631
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perror_plus("socket");
1632
errno = ret_errno;
1632
errno = old_errno;
1633
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return false;
1634
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}
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strncpy(ifr->ifr_name, ifname, IF_NAMESIZE);
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ret = ioctl(s, SIOCGIFFLAGS, ifr);
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if(ret == -1){
1639
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if(debug){
1640
ret_errno = errno;
1640
old_errno = errno;
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perror_plus("ioctl SIOCGIFFLAGS");
1642
errno = ret_errno;
1642
errno = old_errno;
1643
1643
}
1644
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return false;
1645
1645
}
2071
2071
}
2072
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__attribute__((nonnull, warn_unused_result))
2074
error_t bring_up_interface(const char *const interface,
2075
const float delay){
2076
error_t old_errno = errno;
2074
int bring_up_interface(const char *const interface,
2075
const float delay){
2076
int old_errno = errno;
2077
2077
int ret;
2078
2078
struct ifreq network;
2079
2079
unsigned int if_index = if_nametoindex(interface);
2089
2089
}
2090
2090
2091
2091
if(not interface_is_up(interface)){
2092
error_t ret_errno = 0, ioctl_errno = 0;
2092
int ret_errno = 0;
2093
int ioctl_errno = 0;
2093
2094
if(not get_flags(interface, &network)){
2094
2095
ret_errno = errno;
2095
2096
fprintf_plus(stderr, "Failed to get flags for interface "
2198
2199
}
2199
2200
2200
2201
__attribute__((nonnull, warn_unused_result))
2201
error_t take_down_interface(const char *const interface){
2202
error_t old_errno = errno;
2202
int take_down_interface(const char *const interface){
2203
int old_errno = errno;
2203
2204
struct ifreq network;
2204
2205
unsigned int if_index = if_nametoindex(interface);
2205
2206
if(if_index == 0){
2208
2209
return ENXIO;
2209
2210
}
2210
2211
if(interface_is_up(interface)){
2211
error_t ret_errno = 0, ioctl_errno = 0;
2212
int ret_errno = 0;
2213
int ioctl_errno = 0;
2212
2214
if(not get_flags(interface, &network) and debug){
2213
2215
ret_errno = errno;
2214
2216
fprintf_plus(stderr, "Failed to get flags for interface "
2464
2466
.args_doc = "",
2465
2467
.doc = "Mandos client -- Get and decrypt"
2466
2468
" passwords from a Mandos server" };
2467
ret = argp_parse(&argp, argc, argv,
2468
ARGP_IN_ORDER | ARGP_NO_HELP, 0, NULL);
2469
switch(ret){
2469
ret_errno = argp_parse(&argp, argc, argv,
2470
ARGP_IN_ORDER | ARGP_NO_HELP, 0, NULL);
2471
switch(ret_errno){
2470
2472
case 0:
2471
2473
break;
2472
2474
case ENOMEM:
2473
2475
default:
2474
errno = ret;
2476
errno = ret_errno;
2475
2477
perror_plus("argp_parse");
2476
2478
exitcode = EX_OSERR;
2477
2479
goto end;
2486
2488
<http://bugs.debian.org/633582> */
2487
2489
2488
2490
/* Re-raise privileges */
2489
ret_errno = raise_privileges();
2490
if(ret_errno != 0){
2491
errno = ret_errno;
2491
ret = raise_privileges();
2492
if(ret != 0){
2493
errno = ret;
2492
2494
perror_plus("Failed to raise privileges");
2493
2495
} else {
2494
2496
struct stat st;
2558
2560
}
2559
2561
2560
2562
/* Lower privileges */
2561
ret_errno = lower_privileges();
2562
if(ret_errno != 0){
2563
errno = ret_errno;
2563
ret = lower_privileges();
2564
if(ret != 0){
2565
errno = ret;
2564
2566
perror_plus("Failed to lower privileges");
2565
2567
}
2566
2568
}
2894
2896
2895
2897
/* Allocate a new server */
2896
2898
mc.server = avahi_server_new(avahi_simple_poll_get(simple_poll),
2897
&config, NULL, NULL, &ret_errno);
2899
&config, NULL, NULL, &ret);
2898
2900
2899
2901
/* Free the Avahi configuration data */
2900
2902
avahi_server_config_free(&config);
2903
2905
/* Check if creating the Avahi server object succeeded */
2904
2906
if(mc.server == NULL){
2905
2907
fprintf_plus(stderr, "Failed to create Avahi server: %s\n",
2906
avahi_strerror(ret_errno));
2908
avahi_strerror(ret));
2907
2909
exitcode = EX_UNAVAILABLE;
2908
2910
goto end;
2909
2911
}
2989
2991
2990
2992
/* Re-raise privileges */
2991
2993
{
2992
ret_errno = raise_privileges();
2993
if(ret_errno != 0){
2994
errno = ret_errno;
2994
ret = raise_privileges();
2995
if(ret != 0){
2996
errno = ret;
2995
2997
perror_plus("Failed to raise privileges");
2996
2998
} else {
2997
2999
3005
3007
while((interface=argz_next(interfaces_to_take_down,
3006
3008
interfaces_to_take_down_size,
3007
3009
interface))){
3008
ret_errno = take_down_interface(interface);
3009
if(ret_errno != 0){
3010
errno = ret_errno;
3010
ret = take_down_interface(interface);
3011
if(ret != 0){
3012
errno = ret;
3011
3013
perror_plus("Failed to take down interface");
3012
3014
}
3013
3015
}
3018
3020
}
3019
3021
}
3020
3022
3021
ret_errno = lower_privileges_permanently();
3022
if(ret_errno != 0){
3023
errno = ret_errno;
3023
ret = lower_privileges_permanently();
3024
if(ret != 0){
3025
errno = ret;
3024
3026
perror_plus("Failed to lower privileges permanently");
3025
3027
}
3026
3028
}
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Version: 2.0.2.dev0