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- Committer: Björn Påhlsson
- Date: 2011-10-02 19:18:24 UTC
- mto: (237.7.53 trunk)
- mto: This revision was merged to the branch mainline in revision 286.
- Revision ID: belorn@fukt.bsnet.se-20111002191824-eweh4pvneeg3qzia
transitional stuff actually working
documented change to D-Bus API
documented change to D-Bus API
- files removed:
- debian/mandos-client.examples
- network-hooks.d
- files modified:
- .bzrignore
added
removed
plugin-runner.c
2
2
/*
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* Mandos plugin runner - Run Mandos plugins
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*
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* Copyright © 2008-2013 Teddy Hogeborn
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* Copyright © 2008-2013 Björn Påhlsson
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* Copyright © 2008-2010 Teddy Hogeborn
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* Copyright © 2008-2010 Björn Påhlsson
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*
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* This program is free software: you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* along with this program. If not, see
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* <http://www.gnu.org/licenses/>.
21
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*
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* Contact the authors at <mandos@recompile.se>.
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* Contact the authors at <mandos@fukt.bsnet.se>.
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23
*/
24
24
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#define _GNU_SOURCE /* TEMP_FAILURE_RETRY(), getline(),
79
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#define AFILE "/conf/conf.d/mandos/plugin-runner.conf"
80
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const char *argp_program_version = "plugin-runner " VERSION;
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const char *argp_program_bug_address = "<mandos@recompile.se>";
82
const char *argp_program_bug_address = "<mandos@fukt.bsnet.se>";
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typedef struct plugin{
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char *name; /* can be NULL or any plugin name */
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}
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/* Helper function for add_argument and add_environment */
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__attribute__((nonnull))
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static bool add_to_char_array(const char *new, char ***array,
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int *len){
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/* Resize the pointed-to array to hold one more pointer */
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char **new_array = NULL;
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do {
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new_array = realloc(*array, sizeof(char *)
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* (size_t) ((*len) + 2));
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} while(new_array == NULL and errno == EINTR);
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*array = realloc(*array, sizeof(char *)
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* (size_t) ((*len) + 2));
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} while(*array == NULL and errno == EINTR);
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/* Malloc check */
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if(new_array == NULL){
182
if(*array == NULL){
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return false;
186
184
}
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*array = new_array;
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/* Make a copy of the new string */
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char *copy;
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do {
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}
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/* Add to a plugin's argument vector */
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__attribute__((nonnull(2)))
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static bool add_argument(plugin *p, const char *arg){
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if(p == NULL){
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return false;
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}
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/* Add to a plugin's environment */
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__attribute__((nonnull(2)))
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static bool add_environment(plugin *p, const char *def, bool replace){
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if(p == NULL){
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return false;
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/* namelen = length of name of environment variable */
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size_t namelen = (size_t)(strchrnul(def, '=') - def);
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/* Search for this environment variable */
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for(char **envdef = p->environ; *envdef != NULL; envdef++){
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if(strncmp(*envdef, def, namelen + 1) == 0){
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for(char **e = p->environ; *e != NULL; e++){
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if(strncmp(*e, def, namelen + 1) == 0){
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/* It already exists */
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if(replace){
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char *new_envdef;
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char *new;
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do {
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new_envdef = realloc(*envdef, strlen(def) + 1);
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} while(new_envdef == NULL and errno == EINTR);
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if(new_envdef == NULL){
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new = realloc(*e, strlen(def) + 1);
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} while(new == NULL and errno == EINTR);
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if(new == NULL){
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return false;
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}
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*envdef = new_envdef;
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strcpy(*envdef, def);
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*e = new;
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strcpy(*e, def);
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}
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return true;
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}
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}
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/* Prints out a password to stdout */
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__attribute__((nonnull))
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static bool print_out_password(const char *buffer, size_t length){
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ssize_t ret;
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for(size_t written = 0; written < length; written += (size_t)ret){
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}
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/* Removes and free a plugin from the plugin list */
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__attribute__((nonnull))
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static void free_plugin(plugin *plugin_node){
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for(char **arg = plugin_node->argv; *arg != NULL; arg++){
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{ .name = NULL }
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};
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__attribute__((nonnull(3)))
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error_t parse_opt(int key, char *arg, struct argp_state *state){
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errno = 0;
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switch(key){
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char *tmp;
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intmax_t tmp_id;
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intmax_t tmpmax;
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case 'g': /* --global-options */
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{
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char *plugin_option;
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/* This is already done by parse_opt_config_file() */
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break;
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case 130: /* --userid */
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tmp_id = strtoimax(arg, &tmp, 10);
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tmpmax = strtoimax(arg, &tmp, 10);
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if(errno != 0 or tmp == arg or *tmp != '\0'
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or tmp_id != (uid_t)tmp_id){
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or tmpmax != (uid_t)tmpmax){
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argp_error(state, "Bad user ID number: \"%s\", using %"
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PRIdMAX, arg, (intmax_t)uid);
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break;
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}
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uid = (uid_t)tmp_id;
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uid = (uid_t)tmpmax;
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break;
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case 131: /* --groupid */
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tmp_id = strtoimax(arg, &tmp, 10);
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tmpmax = strtoimax(arg, &tmp, 10);
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if(errno != 0 or tmp == arg or *tmp != '\0'
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or tmp_id != (gid_t)tmp_id){
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or tmpmax != (gid_t)tmpmax){
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argp_error(state, "Bad group ID number: \"%s\", using %"
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PRIdMAX, arg, (intmax_t)gid);
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break;
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}
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gid = (gid_t)tmp_id;
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gid = (gid_t)tmpmax;
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break;
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case 132: /* --debug */
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debug = true;
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}
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custom_argc += 1;
669
{
670
char **new_argv = realloc(custom_argv, sizeof(char *)
671
* ((unsigned int)
672
custom_argc + 1));
673
if(new_argv == NULL){
674
error(0, errno, "realloc");
675
exitstatus = EX_OSERR;
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free(new_arg);
677
free(org_line);
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goto fallback;
679
} else {
680
custom_argv = new_argv;
681
}
661
custom_argv = realloc(custom_argv, sizeof(char *)
662
* ((unsigned int) custom_argc + 1));
663
if(custom_argv == NULL){
664
error(0, errno, "realloc");
665
exitstatus = EX_OSERR;
666
free(org_line);
667
goto fallback;
682
668
}
683
669
custom_argv[custom_argc-1] = new_arg;
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670
custom_argv[custom_argc] = NULL;
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742
}
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}
758
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if(getuid() == 0){
745
{
760
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/* Work around Debian bug #633582:
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<http://bugs.debian.org/633582> */
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int plugindir_fd = open(/* plugindir or */ PDIR, O_RDONLY);
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}
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/* Lower permissions */
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ret = setgid(gid);
768
setgid(gid);
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if(ret == -1){
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error(0, errno, "setgid");
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}
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{
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bool bad_name = false;
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const char * const bad_prefixes[] = { ".", "#", NULL };
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const char const *bad_prefixes[] = { ".", "#", NULL };
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const char * const bad_suffixes[] = { "~", "#", ".dpkg-new",
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const char const *bad_suffixes[] = { "~", "#", ".dpkg-new",
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".dpkg-old",
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".dpkg-bak",
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".dpkg-divert", NULL };
867
#ifdef __GNUC__
868
#pragma GCC diagnostic push
869
#pragma GCC diagnostic ignored "-Wcast-qual"
870
#endif
871
for(const char **pre = (const char **)bad_prefixes;
872
*pre != NULL; pre++){
873
#ifdef __GNUC__
874
#pragma GCC diagnostic pop
875
#endif
853
for(const char **pre = bad_prefixes; *pre != NULL; pre++){
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size_t pre_len = strlen(*pre);
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if((d_name_len >= pre_len)
878
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and strncmp((dirst->d_name), *pre, pre_len) == 0){
887
865
if(bad_name){
888
866
continue;
889
867
}
890
#ifdef __GNUC__
891
#pragma GCC diagnostic push
892
#pragma GCC diagnostic ignored "-Wcast-qual"
893
#endif
894
for(const char **suf = (const char **)bad_suffixes;
895
*suf != NULL; suf++){
896
#ifdef __GNUC__
897
#pragma GCC diagnostic pop
898
#endif
868
for(const char **suf = bad_suffixes; *suf != NULL; suf++){
899
869
size_t suf_len = strlen(*suf);
900
870
if((d_name_len >= suf_len)
901
871
and (strcmp((dirst->d_name) + d_name_len-suf_len, *suf)
1095
1065
goto fallback;
1096
1066
}
1097
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1098
#if defined (__GNUC__) and defined (__GLIBC__)
1099
#if not __GLIBC_PREREQ(2, 16)
1100
#pragma GCC diagnostic push
1101
#pragma GCC diagnostic ignored "-Wsign-conversion"
1102
#endif
1103
#endif
1104
1068
FD_SET(new_plugin->fd, &rfds_all); /* Spurious warning from
1105
-Wconversion in GNU libc
1106
before 2.16 */
1107
#if defined (__GNUC__) and defined (__GLIBC__)
1108
#if not __GLIBC_PREREQ(2, 16)
1109
#pragma GCC diagnostic pop
1110
#endif
1111
#endif
1069
-Wconversion */
1112
1070
1113
1071
if(maxfd < new_plugin->fd){
1114
1072
maxfd = new_plugin->fd;
1168
1126
}
1169
1127
1170
1128
/* Remove the plugin */
1171
#if defined (__GNUC__) and defined (__GLIBC__)
1172
#if not __GLIBC_PREREQ(2, 16)
1173
#pragma GCC diagnostic push
1174
#pragma GCC diagnostic ignored "-Wsign-conversion"
1175
#endif
1176
#endif
1177
1129
FD_CLR(proc->fd, &rfds_all); /* Spurious warning from
1178
-Wconversion in GNU libc
1179
before 2.16 */
1180
#if defined (__GNUC__) and defined (__GLIBC__)
1181
#if not __GLIBC_PREREQ(2, 16)
1182
#pragma GCC diagnostic pop
1183
#endif
1184
#endif
1130
-Wconversion */
1185
1131
1186
1132
/* Block signal while modifying process_list */
1187
1133
ret = (int)TEMP_FAILURE_RETRY(sigprocmask
1227
1173
}
1228
1174
1229
1175
/* This process has not completed. Does it have any output? */
1230
#if defined (__GNUC__) and defined (__GLIBC__)
1231
#if not __GLIBC_PREREQ(2, 16)
1232
#pragma GCC diagnostic push
1233
#pragma GCC diagnostic ignored "-Wsign-conversion"
1234
#endif
1235
#endif
1236
1176
if(proc->eof or not FD_ISSET(proc->fd, &rfds)){ /* Spurious
1237
1177
warning from
1238
-Wconversion
1239
in GNU libc
1240
before
1241
2.16 */
1242
#if defined (__GNUC__) and defined (__GLIBC__)
1243
#if not __GLIBC_PREREQ(2, 16)
1244
#pragma GCC diagnostic pop
1245
#endif
1246
#endif
1178
-Wconversion */
1247
1179
/* This process had nothing to say at this time */
1248
1180
proc = proc->next;
1249
1181
continue;
1250
1182
}
1251
1183
/* Before reading, make the process' data buffer large enough */
1252
1184
if(proc->buffer_length + BUFFER_SIZE > proc->buffer_size){
1253
char *new_buffer = realloc(proc->buffer, proc->buffer_size
1254
+ (size_t) BUFFER_SIZE);
1255
if(new_buffer == NULL){
1185
proc->buffer = realloc(proc->buffer, proc->buffer_size
1186
+ (size_t) BUFFER_SIZE);
1187
if(proc->buffer == NULL){
1256
1188
error(0, errno, "malloc");
1257
1189
exitstatus = EX_OSERR;
1258
1190
goto fallback;
1259
1191
}
1260
proc->buffer = new_buffer;
1261
1192
proc->buffer_size += BUFFER_SIZE;
1262
1193
}
1263
1194
/* Read from the process */
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0