X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fcore%2Fcondition.c;h=1448fa19dc3eb6bc039df94828541e951d521c45;hb=fc6c7fe9becdd70ae6b671c396f2ad2db0b71cd7;hp=2b51a16f17548e48500a460e533e4dee1de1b1b9;hpb=b30e2f4c18ad81b04e4314fd191a5d458553773c;p=elogind.git

diff --git a/src/core/condition.c b/src/core/condition.c
index 2b51a16f1..1448fa19d 100644
--- a/src/core/condition.c
+++ b/src/core/condition.c
@@ -6,16 +6,16 @@
   Copyright 2010 Lennart Poettering
 
   systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU General Public License as published by
-  the Free Software Foundation; either version 2 of the License, or
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
   (at your option) any later version.
 
   systemd is distributed in the hope that it will be useful, but
   WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-  General Public License for more details.
+  Lesser General Public License for more details.
 
-  You should have received a copy of the GNU General Public License
+  You should have received a copy of the GNU Lesser General Public License
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
@@ -24,159 +24,58 @@
 #include <string.h>
 #include <unistd.h>
 #include <sys/capability.h>
+#include <sys/statvfs.h>
+#include <fnmatch.h>
 
-#ifdef HAVE_SELINUX
-#include <selinux/selinux.h>
-#endif
-
+#include <systemd/sd-id128.h>
 #include "util.h"
 #include "condition.h"
 #include "virt.h"
-
-Condition* condition_new(ConditionType type, const char *parameter, bool trigger, bool negate) {
-        Condition *c;
-
-        assert(type < _CONDITION_TYPE_MAX);
-
-        c = new0(Condition, 1);
-        if (!c)
-                return NULL;
-
-        c->type = type;
-        c->trigger = trigger;
-        c->negate = negate;
-
-        if (parameter) {
-                c->parameter = strdup(parameter);
-                if (!c->parameter) {
-                        free(c);
-                        return NULL;
-                }
-        }
-
-        return c;
-}
-
-void condition_free(Condition *c) {
+#include "path-util.h"
+#include "fileio.h"
+#include "unit.h"
+#include "smack-util.h"
+#include "apparmor-util.h"
+#include "ima-util.h"
+#include "selinux-util.h"
+
+static bool condition_test_security(Condition *c) {
         assert(c);
-
-        free(c->parameter);
-        free(c);
-}
-
-void condition_free_list(Condition *first) {
-        Condition *c, *n;
-
-        LIST_FOREACH_SAFE(conditions, c, n, first)
-                condition_free(c);
-}
-
-static bool test_kernel_command_line(const char *parameter) {
-        char *line, *w, *state, *word = NULL;
-        bool equal;
-        int r;
-        size_t l, pl;
-        bool found = false;
-
-        assert(parameter);
-
-        if (detect_container(NULL) > 0)
-                return false;
-
-        r = read_one_line_file("/proc/cmdline", &line);
-        if (r < 0) {
-                log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
-                return false;
-        }
-
-        equal = !!strchr(parameter, '=');
-        pl = strlen(parameter);
-
-        FOREACH_WORD_QUOTED(w, l, line, state) {
-
-                free(word);
-                word = strndup(w, l);
-                if (!word)
-                        break;
-
-                if (equal) {
-                        if (streq(word, parameter)) {
-                                found = true;
-                                break;
-                        }
-                } else {
-                        if (startswith(word, parameter) && (word[pl] == '=' || word[pl] == 0)) {
-                                found = true;
-                                break;
-                        }
-                }
-
-        }
-
-        free(word);
-        free(line);
-
-        return found;
-}
-
-static bool test_virtualization(const char *parameter) {
-        int b;
-        Virtualization v;
-        const char *id;
-
-        assert(parameter);
-
-        v = detect_virtualization(&id);
-        if (v < 0) {
-                log_warning("Failed to detect virtualization, ignoring: %s", strerror(-v));
-                return false;
-        }
-
-        /* First, compare with yes/no */
-        b = parse_boolean(parameter);
-
-        if (v > 0 && b > 0)
-                return true;
-
-        if (v == 0 && b == 0)
-                return true;
-
-        /* Then, compare categorization */
-        if (v == VIRTUALIZATION_VM && streq(parameter, "vm"))
-                return true;
-
-        if (v == VIRTUALIZATION_CONTAINER && streq(parameter, "container"))
-                return true;
-
-        /* Finally compare id */
-        return v > 0 && streq(parameter, id);
+        assert(c->parameter);
+        assert(c->type == CONDITION_SECURITY);
+
+        if (streq(c->parameter, "selinux"))
+                return use_selinux() == !c->negate;
+        if (streq(c->parameter, "apparmor"))
+                return use_apparmor() == !c->negate;
+        if (streq(c->parameter, "ima"))
+                return use_ima() == !c->negate;
+        if (streq(c->parameter, "smack"))
+                return use_smack() == !c->negate;
+        return c->negate;
 }
 
-static bool test_security(const char *parameter) {
-#ifdef HAVE_SELINUX
-        if (streq(parameter, "selinux"))
-                return is_selinux_enabled() > 0;
-#endif
-        return false;
-}
-
-static bool test_capability(const char *parameter) {
+static bool condition_test_capability(Condition *c) {
         cap_value_t value;
         FILE *f;
         char line[LINE_MAX];
         unsigned long long capabilities = (unsigned long long) -1;
 
+        assert(c);
+        assert(c->parameter);
+        assert(c->type == CONDITION_CAPABILITY);
+
         /* If it's an invalid capability, we don't have it */
 
-        if (cap_from_name(parameter, &value) < 0)
-                return false;
+        if (cap_from_name(c->parameter, &value) < 0)
+                return c->negate;
 
         /* If it's a valid capability we default to assume
          * that we have it */
 
         f = fopen("/proc/self/status", "re");
         if (!f)
-                return true;
+                return !c->negate;
 
         while (fgets(line, sizeof(line), f)) {
                 truncate_nl(line);
@@ -189,10 +88,10 @@ static bool test_capability(const char *parameter) {
 
         fclose(f);
 
-        return !!(capabilities & (1ULL << value));
+        return !!(capabilities & (1ULL << value)) == !c->negate;
 }
 
-bool condition_test(Condition *c) {
+static bool condition_test(Condition *c) {
         assert(c);
 
         switch(c->type) {
@@ -222,6 +121,9 @@ bool condition_test(Condition *c) {
         case CONDITION_PATH_IS_MOUNT_POINT:
                 return (path_is_mount_point(c->parameter, true) > 0) == !c->negate;
 
+        case CONDITION_PATH_IS_READ_WRITE:
+                return (path_is_read_only_fs(c->parameter) > 0) == c->negate;
+
         case CONDITION_DIRECTORY_NOT_EMPTY: {
                 int k;
 
@@ -229,6 +131,15 @@ bool condition_test(Condition *c) {
                 return !(k == -ENOENT || k > 0) == !c->negate;
         }
 
+        case CONDITION_FILE_NOT_EMPTY: {
+                struct stat st;
+
+                if (stat(c->parameter, &st) < 0)
+                        return c->negate;
+
+                return (S_ISREG(st.st_mode) && st.st_size > 0) == !c->negate;
+        }
+
         case CONDITION_FILE_IS_EXECUTABLE: {
                 struct stat st;
 
@@ -239,16 +150,25 @@ bool condition_test(Condition *c) {
         }
 
         case CONDITION_KERNEL_COMMAND_LINE:
-                return test_kernel_command_line(c->parameter) == !c->negate;
+                return condition_test_kernel_command_line(c);
 
         case CONDITION_VIRTUALIZATION:
-                return test_virtualization(c->parameter) == !c->negate;
+                return condition_test_virtualization(c);
 
         case CONDITION_SECURITY:
-                return test_security(c->parameter) == !c->negate;
+                return condition_test_security(c);
 
         case CONDITION_CAPABILITY:
-                return test_capability(c->parameter) == !c->negate;
+                return condition_test_capability(c);
+
+        case CONDITION_HOST:
+                return condition_test_host(c);
+
+        case CONDITION_AC_POWER:
+                return condition_test_ac_power(c);
+
+        case CONDITION_ARCHITECTURE:
+                return condition_test_architecture(c);
 
         case CONDITION_NULL:
                 return !c->negate;
@@ -258,7 +178,7 @@ bool condition_test(Condition *c) {
         }
 }
 
-bool condition_test_list(Condition *first) {
+bool condition_test_list(const char *unit, Condition *first) {
         Condition *c;
         int triggered = -1;
 
@@ -273,6 +193,16 @@ bool condition_test_list(Condition *first) {
                 bool b;
 
                 b = condition_test(c);
+                if (unit)
+                        log_debug_unit(unit,
+                                       "%s=%s%s%s %s for %s.",
+                                       condition_type_to_string(c->type),
+                                       c->trigger ? "|" : "",
+                                       c->negate ? "!" : "",
+                                       c->parameter,
+                                       b ? "succeeded" : "failed",
+                                       unit);
+                c->state = b ? 1 : -1;
 
                 if (!c->trigger && !b)
                         return false;
@@ -283,41 +213,3 @@ bool condition_test_list(Condition *first) {
 
         return triggered != 0;
 }
-
-void condition_dump(Condition *c, FILE *f, const char *prefix) {
-        assert(c);
-        assert(f);
-
-        if (!prefix)
-                prefix = "";
-
-        fprintf(f,
-                "%s\t%s: %s%s%s\n",
-                prefix,
-                condition_type_to_string(c->type),
-                c->trigger ? "|" : "",
-                c->negate ? "!" : "",
-                c->parameter);
-}
-
-void condition_dump_list(Condition *first, FILE *f, const char *prefix) {
-        Condition *c;
-
-        LIST_FOREACH(conditions, c, first)
-                condition_dump(c, f, prefix);
-}
-
-static const char* const condition_type_table[_CONDITION_TYPE_MAX] = {
-        [CONDITION_PATH_EXISTS] = "ConditionPathExists",
-        [CONDITION_PATH_EXISTS_GLOB] = "ConditionPathExistsGlob",
-        [CONDITION_PATH_IS_DIRECTORY] = "ConditionPathIsDirectory",
-        [CONDITION_PATH_IS_SYMBOLIC_LINK] = "ConditionPathIsSymbolicLink",
-        [CONDITION_PATH_IS_MOUNT_POINT] = "ConditionPathIsMountPoint",
-        [CONDITION_DIRECTORY_NOT_EMPTY] = "ConditionDirectoryNotEmpty",
-        [CONDITION_KERNEL_COMMAND_LINE] = "ConditionKernelCommandLine",
-        [CONDITION_VIRTUALIZATION] = "ConditionVirtualization",
-        [CONDITION_SECURITY] = "ConditionSecurity",
-        [CONDITION_NULL] = "ConditionNull"
-};
-
-DEFINE_STRING_TABLE_LOOKUP(condition_type, ConditionType);