aboutsummaryrefslogtreecommitdiff
path: root/plugins/check_apt.c
diff options
context:
space:
mode:
Diffstat (limited to 'plugins/check_apt.c')
-rw-r--r--plugins/check_apt.c195
1 files changed, 144 insertions, 51 deletions
diff --git a/plugins/check_apt.c b/plugins/check_apt.c
index db328a06..445659d1 100644
--- a/plugins/check_apt.c
+++ b/plugins/check_apt.c
@@ -32,12 +32,18 @@ const char *email = "nagiosplug-devel@lists.sourceforge.net";
#include "utils.h"
#include <regex.h>
-/* for now define the various apt calls as constants. this may need
- * to change later. */
-#define APTGET_UPGRADE "/usr/bin/apt-get -o 'Debug::NoLocking=true' -s -qq upgrade"
-#define APTGET_DISTUPGRADE "/usr/bin/apt-get -o 'Debug::NoLocking=true' -s -qq dist-upgrade"
-#define APTGET_UPDATE "/usr/bin/apt-get -q update"
-
+/* some constants */
+typedef enum { UPGRADE, DIST_UPGRADE, NO_UPGRADE } upgrade_type;
+
+/* the default opts can be overridden via the cmdline */
+#define UPGRADE_DEFAULT_OPTS "-o 'Debug::NoLocking=true' -s -qq"
+#define UPDATE_DEFAULT_OPTS "-q"
+/* until i commit the configure.in patch which gets this, i'll define
+ * it here as well */
+#ifndef PATH_TO_APTGET
+# define PATH_TO_APTGET "/usr/bin/apt-get"
+#endif /* PATH_TO_APTGET */
+/* the RE that catches security updates */
#define SECURITY_RE "^[^\\(]*\\([^ ]* (Debian-Security:|Ubuntu:[^/]*/[^-]*-security)"
/* some standard functions */
@@ -45,6 +51,8 @@ int process_arguments(int, char **);
void print_help(void);
void print_usage(void);
+/* construct the appropriate apt-get cmdline */
+char* construct_cmdline(upgrade_type u, const char *opts);
/* run an apt-get update */
int run_update(void);
/* run an apt-get upgrade */
@@ -55,9 +63,12 @@ char* add_to_regexp(char *expr, const char *next);
/* configuration variables */
static int verbose = 0; /* -v */
static int do_update = 0; /* whether to call apt-get update */
-static int dist_upgrade = 0; /* whether to call apt-get dist-upgrade */
-static char* do_include = NULL; /* regexp to only include certain packages */
-static char* do_exclude = NULL; /* regexp to only exclude certain packages */
+static upgrade_type upgrade = UPGRADE; /* which type of upgrade to do */
+static char *upgrade_opts = NULL; /* options to override defaults for upgrade */
+static char *update_opts = NULL; /* options to override defaults for update */
+static char *do_include = NULL; /* regexp to only include certain packages */
+static char *do_exclude = NULL; /* regexp to only exclude certain packages */
+static char *do_critical = NULL; /* regexp specifying critical packages */
/* other global variables */
static int stderr_warning = 0; /* if a cmd issued output on stderr */
@@ -94,7 +105,7 @@ int main (int argc, char **argv) {
printf("APT %s: %d packages available for %s (%d critical updates). %s%s%s%s\n",
state_text(result),
packages_available,
- (dist_upgrade)?"dist-upgrade":"upgrade",
+ (upgrade==DIST_UPGRADE)?"dist-upgrade":"upgrade",
sec_count,
(stderr_warning)?" warnings detected":"",
(stderr_warning && exec_warning)?",":"",
@@ -114,15 +125,18 @@ int process_arguments (int argc, char **argv) {
{"help", no_argument, 0, 'h'},
{"verbose", no_argument, 0, 'v'},
{"timeout", required_argument, 0, 't'},
- {"update", no_argument, 0, 'u'},
- {"dist-upgrade", no_argument, 0, 'd'},
- {"include", no_argument, 0, 'i'},
- {"exclude", no_argument, 0, 'e'},
+ {"update", optional_argument, 0, 'u'},
+ {"upgrade", optional_argument, 0, 'U'},
+ {"no-upgrade", no_argument, 0, 'n'},
+ {"dist-upgrade", optional_argument, 0, 'd'},
+ {"include", required_argument, 0, 'i'},
+ {"exclude", required_argument, 0, 'e'},
+ {"critical", required_argument, 0, 'c'},
{0, 0, 0, 0}
};
while(1) {
- c = getopt_long(argc, argv, "hVvt:udi:e:", longopts, NULL);
+ c = getopt_long(argc, argv, "hVvt:u::U::d::ni:e:c:", longopts, NULL);
if(c == -1 || c == EOF || c == 1) break;
@@ -140,10 +154,28 @@ int process_arguments (int argc, char **argv) {
timeout_interval=atoi(optarg);
break;
case 'd':
- dist_upgrade=1;
+ upgrade=DIST_UPGRADE;
+ if(optarg!=NULL){
+ upgrade_opts=strdup(optarg);
+ if(upgrade_opts==NULL) die(STATE_UNKNOWN, "strdup failed");
+ }
+ break;
+ case 'U':
+ upgrade=UPGRADE;
+ if(optarg!=NULL){
+ upgrade_opts=strdup(optarg);
+ if(upgrade_opts==NULL) die(STATE_UNKNOWN, "strdup failed");
+ }
+ break;
+ case 'n':
+ upgrade=NO_UPGRADE;
break;
case 'u':
do_update=1;
+ if(optarg!=NULL){
+ update_opts=strdup(optarg);
+ if(update_opts==NULL) die(STATE_UNKNOWN, "strdup failed");
+ }
break;
case 'i':
do_include=add_to_regexp(do_include, optarg);
@@ -151,6 +183,9 @@ int process_arguments (int argc, char **argv) {
case 'e':
do_exclude=add_to_regexp(do_exclude, optarg);
break;
+ case 'c':
+ do_critical=add_to_regexp(do_critical, optarg);
+ break;
default:
/* print short usage statement if args not parsable */
usage_va(_("Unknown argument - %s"), optarg);
@@ -174,27 +209,51 @@ found in Debian GNU/Linux\n\
printf(_(UT_HELP_VRSN));
printf(_(UT_TIMEOUT), timeout_interval);
printf(_("\n\
- -d, --dist-upgrade\n\
- Perform a dist-upgrade instead of normal upgrade.\n\
+ -U, --upgrade=OPTS\n\
+ [Default] Perform an upgrade. If an optional OPTS argument is provided,\n\
+ apt-get will be run with these command line options instead of the\n\
+ default (%s).\n\
+ Note that you may be required to have root privileges if you do not use\n\
+ the default options.\n\
+ -d, --dist-upgrade=OPTS\n\
+ Perform a dist-upgrade instead of normal upgrade. Like with -U OPTS\n\
+ can be provided to override the default options.\n\
+ -n, --no-upgrade\n\
+ Do not run the upgrade. Probably not useful (without -u at least).\n\
-i, --include=REGEXP\n\
Include only packages matching REGEXP. Can be specified multiple times;\n\
- the values will be combined together. Default is to include all packages.\n\
+ the values will be combined together. Any patches matching this list\n\
+ cause the plugin to return WARNING status. Others will be ignored.\n\
+ Default is to include all packages.\n\
-e, --exclude=REGEXP\n\
Exclude packages matching REGEXP from the list of packages that would\n\
- otherwise be excluded. Can be specified multiple times; the values\n\
- will be combined together. Default is to exclude no packages.\n\n"));
+ otherwise be included. Can be specified multiple times; the values\n\
+ will be combined together. Default is to exclude no packages.\n\
+ -c, --critical=REGEXP\n\
+ If the full package information of any of the upgradable packages match\n\
+ this REGEXP, the plugin will return CRITICAL status. Can be specified\n\
+ multiple times like above. Default is a regexp matching security\n\
+ upgrades for Debian and Ubuntu:\n\
+ \t%s\n\
+ Note that the package must first match the include list before its\n\
+ information is compared against the critical list.\n\
+ \n\n"),
+ UPGRADE_DEFAULT_OPTS, SECURITY_RE);
printf(_("\
The following options require root privileges and should be used with care: \
\n\n"));
printf(_("\
- -u, --update\n\
- First perform an 'apt-get update' (note: you may also need to use -t)\
+ -u, --update=OPTS\n\
+ First perform an 'apt-get update'. An optional OPTS parameter overrides\n\
+ the default options. Note: you may also need to adjust the global \n\
+ timeout (with -t) to prevent the plugin from timing out if apt-get\n\
+ upgrade is expected to take longer than the default timeout.\n\
\n\n"));
}
/* simple usage heading */
void print_usage(void){
- printf ("Usage: %s [-du] [-t timeout]\n", progname);
+ printf ("Usage: %s [[-d|-u|-U]opts] [-n] [-t timeout]\n", progname);
}
/* run an apt-get upgrade */
@@ -202,25 +261,23 @@ int run_upgrade(int *pkgcount, int *secpkgcount){
int i=0, result=STATE_UNKNOWN, regres=0, pc=0, spc=0;
struct output chld_out, chld_err;
regex_t ireg, ereg, sreg;
- char rerrbuf[64];
- const char *default_include_expr="^Inst";
+ char *cmdline=NULL, rerrbuf[64];
+ const char *include_ptr=NULL, *crit_ptr=NULL;
+
+ if(upgrade==NO_UPGRADE) return STATE_OK;
/* compile the regexps */
- if(do_include!=NULL){
- regres=regcomp(&ireg, do_include, REG_EXTENDED);
- if(regres!=0) {
- regerror(regres, &ireg, rerrbuf, 64);
- die(STATE_UNKNOWN, "%s: Error compiling regexp: %s",
- progname, rerrbuf);
- }
- } else {
- regres=regcomp(&ireg, default_include_expr, REG_EXTENDED);
- if(regres!=0) {
- regerror(regres, &ireg, rerrbuf, 64);
- die(STATE_UNKNOWN, "%s: Error compiling regexp: %s",
- progname, rerrbuf);
- }
+ if(do_include!=NULL) include_ptr=do_include;
+ else include_ptr="^Inst";
+ if(do_critical!=NULL) crit_ptr=do_critical;
+ else crit_ptr=SECURITY_RE;
+
+ regres=regcomp(&ireg, include_ptr, REG_EXTENDED);
+ if(regres!=0) {
+ regerror(regres, &ireg, rerrbuf, 64);
+ die(STATE_UNKNOWN, "%s: Error compiling regexp: %s", progname, rerrbuf);
}
+
if(do_exclude!=NULL){
regres=regcomp(&ereg, do_exclude, REG_EXTENDED);
if(regres!=0) {
@@ -229,21 +286,16 @@ int run_upgrade(int *pkgcount, int *secpkgcount){
progname, rerrbuf);
}
}
- regres=regcomp(&sreg, SECURITY_RE, REG_EXTENDED);
+ regres=regcomp(&sreg, crit_ptr, REG_EXTENDED);
if(regres!=0) {
regerror(regres, &ereg, rerrbuf, 64);
die(STATE_UNKNOWN, "%s: Error compiling regexp: %s",
progname, rerrbuf);
}
-
-
+ cmdline=construct_cmdline(upgrade, upgrade_opts);
/* run the upgrade */
- if(dist_upgrade==0){
- result = np_runcmd(APTGET_UPGRADE, &chld_out, &chld_err, 0);
- } else {
- result = np_runcmd(APTGET_DISTUPGRADE, &chld_out, &chld_err, 0);
- }
+ result = np_runcmd(cmdline, &chld_out, &chld_err, 0);
/* apt-get upgrade only changes exit status if there is an
* internal error when run in dry-run mode. therefore we will
* treat such an error as UNKNOWN */
@@ -251,7 +303,7 @@ int run_upgrade(int *pkgcount, int *secpkgcount){
exec_warning=1;
result = STATE_UNKNOWN;
fprintf(stderr, "'%s' exited with non-zero status.\n",
- APTGET_UPGRADE);
+ cmdline);
}
/* parse the output, which should only consist of lines like
@@ -276,6 +328,7 @@ int run_upgrade(int *pkgcount, int *secpkgcount){
pc++;
if(regexec(&sreg, chld_out.line[i], 0, NULL, 0)==0){
spc++;
+ if(verbose) printf("*");
}
if(verbose){
printf("*%s\n", chld_out.line[i]);
@@ -296,6 +349,10 @@ int run_upgrade(int *pkgcount, int *secpkgcount){
}
}
}
+ regfree(&ireg);
+ regfree(&sreg);
+ if(do_exclude!=NULL) regfree(&ereg);
+ free(cmdline);
return result;
}
@@ -303,9 +360,11 @@ int run_upgrade(int *pkgcount, int *secpkgcount){
int run_update(void){
int i=0, result=STATE_UNKNOWN;
struct output chld_out, chld_err;
+ char *cmdline;
/* run the upgrade */
- result = np_runcmd(APTGET_UPDATE, &chld_out, &chld_err, 0);
+ cmdline = construct_cmdline(NO_UPGRADE, update_opts);
+ result = np_runcmd(cmdline, &chld_out, &chld_err, 0);
/* apt-get update changes exit status if it can't fetch packages.
* since we were explicitly asked to do so, this is treated as
* a critical error. */
@@ -313,7 +372,7 @@ int run_update(void){
exec_warning=1;
result = STATE_CRITICAL;
fprintf(stderr, "'%s' exited with non-zero status.\n",
- APTGET_UPDATE);
+ cmdline);
}
if(verbose){
@@ -332,6 +391,7 @@ int run_update(void){
}
}
}
+ free(cmdline);
return result;
}
@@ -352,3 +412,36 @@ char* add_to_regexp(char *expr, const char *next){
return re;
}
+
+char* construct_cmdline(upgrade_type u, const char *opts){
+ int len=0;
+ const char *opts_ptr=NULL, *aptcmd=NULL;
+ char *cmd=NULL;
+
+ switch(u){
+ case UPGRADE:
+ if(opts==NULL) opts_ptr=UPGRADE_DEFAULT_OPTS;
+ else opts_ptr=opts;
+ aptcmd="upgrade";
+ break;
+ case DIST_UPGRADE:
+ if(opts==NULL) opts_ptr=UPGRADE_DEFAULT_OPTS;
+ else opts_ptr=opts;
+ aptcmd="dist-upgrade";
+ break;
+ case NO_UPGRADE:
+ if(opts==NULL) opts_ptr=UPDATE_DEFAULT_OPTS;
+ else opts_ptr=opts;
+ aptcmd="update";
+ break;
+ }
+
+ len+=strlen(PATH_TO_APTGET)+1; /* "/usr/bin/apt-get " */
+ len+=strlen(opts_ptr)+1; /* "opts " */
+ len+=strlen(aptcmd)+1; /* "upgrade\0" */
+
+ cmd=(char*)malloc(sizeof(char)*len);
+ if(cmd==NULL) die(STATE_UNKNOWN, "malloc failed");
+ sprintf(cmd, "%s %s %s", PATH_TO_APTGET, opts_ptr, aptcmd);
+ return cmd;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-22 12:05:38 +0000