X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Femail.c;h=869b7c36aa620cff5f7ae2f2d806d79868084eea;hb=613c72c29b5405d7e170ae7fe12611492ecb5fef;hp=bbee9bb699f041a9b4d26bb9019dc0746a85479c;hpb=a099e23e239df5b8c5e4ba69594f5d53c9841c82;p=collectd.git diff --git a/src/email.c b/src/email.c index bbee9bb6..869b7c36 100644 --- a/src/email.c +++ b/src/email.c @@ -1,11 +1,10 @@ /** * collectd - src/email.c - * Copyright (C) 2006 Sebastian Harl + * Copyright (C) 2006,2007 Sebastian Harl * * This program 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 (at your - * option) any later version. + * Free Software Foundation; only version 2 of the License is applicable. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of @@ -40,27 +39,15 @@ #include "configfile.h" +#include + #if HAVE_LIBPTHREAD # include -# define EMAIL_HAVE_READ 1 -#else -# define EMAIL_HAVE_READ 0 #endif -#if HAVE_SYS_SELECT_H -# include -#endif /* HAVE_SYS_SELECT_H */ - -#if HAVE_SYS_SOCKET_H -# include -#endif /* HAVE_SYS_SOCKET_H */ - -/* *sigh* glibc does not define UNIX_PATH_MAX in sys/un.h ... */ -#if HAVE_LINUX_UN_H -# include -#elif HAVE_SYS_UN_H -# include -#endif /* HAVE_LINUX_UN_H | HAVE_SYS_UN_H */ +#include +#include +#include /* some systems (e.g. Darwin) seem to not define UNIX_PATH_MAX at all */ #ifndef UNIX_PATH_MAX @@ -76,21 +63,16 @@ /* 256 bytes ought to be enough for anybody ;-) */ #define BUFSIZE 256 -#ifndef COLLECTD_SOCKET_PREFIX -# define COLLECTD_SOCKET_PREFIX "/tmp/.collectd-" -#endif /* COLLECTD_SOCKET_PREFIX */ - -#define SOCK_PATH COLLECTD_SOCKET_PREFIX"email" +#define SOCK_PATH LOCALSTATEDIR"/run/"PACKAGE_NAME"-email" #define MAX_CONNS 5 #define MAX_CONNS_LIMIT 16384 -#define log_err(...) syslog (LOG_ERR, MODULE_NAME": "__VA_ARGS__) -#define log_warn(...) syslog (LOG_WARNING, MODULE_NAME": "__VA_ARGS__) +#define log_err(...) ERROR (MODULE_NAME": "__VA_ARGS__) +#define log_warn(...) WARNING (MODULE_NAME": "__VA_ARGS__) /* * Private data structures */ -#if EMAIL_HAVE_READ /* linked list of email and check types */ typedef struct type { char *name; @@ -128,23 +110,22 @@ typedef struct { conn_t *head; conn_t *tail; } conn_list_t; -#endif /* EMAIL_HAVE_READ */ /* * Private variables */ -#if EMAIL_HAVE_READ /* valid configuration file keys */ -static char *config_keys[] = +static const char *config_keys[] = { + "SocketFile", "SocketGroup", "SocketPerms", - "MaxConns", - NULL + "MaxConns" }; -static int config_keys_num = 3; +static int config_keys_num = STATIC_ARRAY_SIZE (config_keys); /* socket configuration */ +static char *sock_file = SOCK_PATH; static char *sock_group = COLLECTD_GRP_NAME; static int sock_perms = S_IRWXU | S_IRWXG; static int max_conns = MAX_CONNS; @@ -153,8 +134,8 @@ static int max_conns = MAX_CONNS; static int disabled = 0; /* thread managing "client" connections */ -static pthread_t connector; -static int connector_socket; +static pthread_t connector = (pthread_t) 0; +static int connector_socket = -1; /* tell the collector threads that a new connection is available */ static pthread_cond_t conn_available = PTHREAD_COND_INITIALIZER; @@ -167,7 +148,7 @@ static conn_list_t conns; static pthread_cond_t collector_available = PTHREAD_COND_INITIALIZER; /* collector threads */ -static collector_t **collectors; +static collector_t **collectors = NULL; static pthread_mutex_t available_mutex = PTHREAD_MUTEX_INITIALIZER; static int available_collectors; @@ -184,44 +165,16 @@ static int score_count; static pthread_mutex_t check_mutex = PTHREAD_MUTEX_INITIALIZER; static type_list_t check; -#endif /* EMAIL_HAVE_READ */ - -#define COUNT_FILE "email/email-%s.rrd" -static char *count_ds_def[] = -{ - "DS:count:GAUGE:"COLLECTD_HEARTBEAT":0:U", - NULL -}; -static int count_ds_num = 1; - -#define SIZE_FILE "email/email_size-%s.rrd" -static char *size_ds_def[] = -{ - "DS:size:GAUGE:"COLLECTD_HEARTBEAT":0:U", - NULL -}; -static int size_ds_num = 1; -#define SCORE_FILE "email/spam_score.rrd" -static char *score_ds_def[] = -{ - "DS:score:GAUGE:"COLLECTD_HEARTBEAT":U:U", - NULL -}; -static int score_ds_num = 1; - -#define CHECK_FILE "email/spam_check-%s.rrd" -static char *check_ds_def[] = -{ - "DS:hits:GAUGE:"COLLECTD_HEARTBEAT":0:U", - NULL -}; -static int check_ds_num = 1; - -#if EMAIL_HAVE_READ -static int email_config (char *key, char *value) +/* + * Private functions + */ +static int email_config (const char *key, const char *value) { - if (0 == strcasecmp (key, "SocketGroup")) { + if (0 == strcasecmp (key, "SocketFile")) { + sock_file = sstrdup (value); + } + else if (0 == strcasecmp (key, "SocketGroup")) { sock_group = sstrdup (value); } else if (0 == strcasecmp (key, "SocketPerms")) { @@ -300,7 +253,9 @@ static char read_char (conn_t *src) FD_SET (src->socket, &fdset); if (-1 == select (src->socket + 1, &fdset, NULL, NULL, NULL)) { - log_err ("select() failed: %s", strerror (errno)); + char errbuf[1024]; + log_err ("select() failed: %s", + sstrerror (errno, errbuf, sizeof (errbuf))); return '\0'; } @@ -312,7 +267,9 @@ static char read_char (conn_t *src) errno = 0; if (0 > (len = read (src->socket, (void *)&ret, 1))) { if (EINTR != errno) { - log_err ("read() failed: %s", strerror (errno)); + char errbuf[1024]; + log_err ("read() failed: %s", + sstrerror (errno, errbuf, sizeof (errbuf))); return '\0'; } } @@ -361,7 +318,9 @@ static char *read_line (conn_t *src) FD_SET (src->socket, &fdset); if (-1 == select (src->socket + 1, &fdset, NULL, NULL, NULL)) { - log_err ("select() failed: %s", strerror (errno)); + char errbuf[1024]; + log_err ("select() failed: %s", + sstrerror (errno, errbuf, sizeof (errbuf))); return NULL; } @@ -373,7 +332,9 @@ static char *read_line (conn_t *src) (void *)(src->buffer + src->idx), BUFSIZE - src->idx))) { if (EINTR != errno) { - log_err ("read() failed: %s", strerror (errno)); + char errbuf[1024]; + log_err ("read() failed: %s", + sstrerror (errno, errbuf, sizeof (errbuf))); return NULL; } } @@ -445,13 +406,17 @@ static void *collect (void *arg) errno = 0; if (-1 == fcntl (connection->socket, F_GETFL, &flags)) { - log_err ("fcntl() failed: %s", strerror (errno)); + char errbuf[1024]; + log_err ("fcntl() failed: %s", + sstrerror (errno, errbuf, sizeof (errbuf))); loop = 0; } errno = 0; if (-1 == fcntl (connection->socket, F_SETFL, flags | O_NONBLOCK)) { - log_err ("fcntl() failed: %s", strerror (errno)); + char errbuf[1024]; + log_err ("fcntl() failed: %s", + sstrerror (errno, errbuf, sizeof (errbuf))); loop = 0; } } @@ -515,9 +480,10 @@ static void *collect (void *arg) } /* while (loop) */ close (connection->socket); - free (connection); + this->socket = -1; + pthread_mutex_lock (&available_mutex); ++available_collectors; pthread_mutex_unlock (&available_mutex); @@ -536,14 +502,16 @@ static void *open_connection (void *arg) /* create UNIX socket */ errno = 0; if (-1 == (connector_socket = socket (PF_UNIX, SOCK_STREAM, 0))) { + char errbuf[1024]; disabled = 1; - log_err ("socket() failed: %s", strerror (errno)); + log_err ("socket() failed: %s", + sstrerror (errno, errbuf, sizeof (errbuf))); pthread_exit ((void *)1); } addr.sun_family = AF_UNIX; - strncpy (addr.sun_path, SOCK_PATH, (size_t)(UNIX_PATH_MAX - 1)); + strncpy (addr.sun_path, sock_file, (size_t)(UNIX_PATH_MAX - 1)); addr.sun_path[UNIX_PATH_MAX - 1] = '\0'; unlink (addr.sun_path); @@ -551,39 +519,65 @@ static void *open_connection (void *arg) if (-1 == bind (connector_socket, (struct sockaddr *)&addr, offsetof (struct sockaddr_un, sun_path) + strlen(addr.sun_path))) { + char errbuf[1024]; disabled = 1; - log_err ("bind() failed: %s", strerror (errno)); + connector_socket = -1; /* TODO: close? */ + log_err ("bind() failed: %s", + sstrerror (errno, errbuf, sizeof (errbuf))); pthread_exit ((void *)1); } errno = 0; if (-1 == listen (connector_socket, 5)) { + char errbuf[1024]; disabled = 1; - log_err ("listen() failed: %s", strerror (errno)); + connector_socket = -1; /* TODO: close? */ + log_err ("listen() failed: %s", + sstrerror (errno, errbuf, sizeof (errbuf))); pthread_exit ((void *)1); } - if ((uid_t)0 == geteuid ()) { + if ((uid_t) 0 == geteuid ()) + { + struct group sg; struct group *grp; - - errno = 0; - if (NULL != (grp = getgrnam (sock_group))) { - errno = 0; - if (0 != chown (SOCK_PATH, (uid_t)-1, grp->gr_gid)) { - log_warn ("chown() failed: %s", strerror (errno)); - } + char grbuf[2048]; + int status; + + grp = NULL; + status = getgrnam_r (sock_group, &sg, grbuf, sizeof (grbuf), &grp); + if (status != 0) + { + char errbuf[1024]; + log_warn ("getgrnam_r (%s) failed: %s", sock_group, + sstrerror (errno, errbuf, sizeof (errbuf))); } - else { - log_warn ("getgrnam() failed: %s", strerror (errno)); + else if (grp == NULL) + { + log_warn ("No such group: `%s'", sock_group); + } + else + { + status = chown (sock_file, (uid_t) -1, grp->gr_gid); + if (status != 0) + { + char errbuf[1024]; + log_warn ("chown (%s, -1, %i) failed: %s", + sock_file, (int) grp->gr_gid, + sstrerror (errno, errbuf, sizeof (errbuf))); + } } } - else { + else /* geteuid != 0 */ + { log_warn ("not running as root"); } errno = 0; - if (0 != chmod (SOCK_PATH, sock_perms)) { - log_warn ("chmod() failed: %s", strerror (errno)); + if (0 != chmod (sock_file, sock_perms)) { + char errbuf[1024]; + log_warn ("chmod() failed: %s", + sstrerror (errno, errbuf, sizeof (errbuf))); } { /* initialize collector threads */ @@ -605,11 +599,14 @@ static void *open_connection (void *arg) for (i = 0; i < max_conns; ++i) { collectors[i] = (collector_t *)smalloc (sizeof (collector_t)); - collectors[i]->socket = 0; + collectors[i]->socket = -1; if (0 != (err = pthread_create (&collectors[i]->thread, &ptattr, collect, collectors[i]))) { - log_err ("pthread_create() failed: %s", strerror (err)); + char errbuf[1024]; + log_err ("pthread_create() failed: %s", + sstrerror (errno, errbuf, sizeof (errbuf))); + collectors[i]->thread = (pthread_t) 0; } } @@ -635,8 +632,11 @@ static void *open_connection (void *arg) errno = 0; if (-1 == (remote = accept (connector_socket, NULL, NULL))) { if (EINTR != errno) { + char errbuf[1024]; disabled = 1; - log_err ("accept() failed: %s", strerror (errno)); + connector_socket = -1; /* TODO: close? */ + log_err ("accept() failed: %s", + sstrerror (errno, errbuf, sizeof (errbuf))); pthread_exit ((void *)1); } } @@ -664,120 +664,81 @@ static void *open_connection (void *arg) } pthread_exit ((void *)0); } /* static void *open_connection (void *) */ -#endif /* EMAIL_HAVE_READ */ -static void email_init (void) +static int email_init (void) { -#if EMAIL_HAVE_READ int err = 0; if (0 != (err = pthread_create (&connector, NULL, open_connection, NULL))) { + char errbuf[1024]; disabled = 1; - log_err ("pthread_create() failed: %s", strerror (err)); - return; + log_err ("pthread_create() failed: %s", + sstrerror (errno, errbuf, sizeof (errbuf))); + return (-1); } -#endif /* EMAIL_HAVE_READ */ - return; -} /* static void email_init (void) */ -#if EMAIL_HAVE_READ -static void email_shutdown (void) + return (0); +} /* int email_init */ + +static int email_shutdown (void) { int i = 0; - if (disabled) - return; + if (connector != ((pthread_t) 0)) { + pthread_kill (connector, SIGTERM); + connector = (pthread_t) 0; + } - pthread_kill (connector, SIGTERM); - close (connector_socket); + if (connector_socket >= 0) { + close (connector_socket); + connector_socket = -1; + } /* don't allow any more connections to be processed */ pthread_mutex_lock (&conns_mutex); - for (i = 0; i < max_conns; ++i) { - pthread_kill (collectors[i]->thread, SIGTERM); - close (collectors[i]->socket); - } - - pthread_mutex_unlock (&conns_mutex); - - unlink (SOCK_PATH); - return; -} /* static void email_shutdown (void) */ -#endif /* EMAIL_HAVE_READ */ - -static void count_write (char *host, char *inst, char *val) -{ - char file[BUFSIZE] = ""; - int len = 0; - - len = snprintf (file, BUFSIZE, COUNT_FILE, inst); - if ((len < 0) || (len >= BUFSIZE)) - return; - - rrd_update_file (host, file, val, count_ds_def, count_ds_num); - return; -} /* static void email_write (char *host, char *inst, char *val) */ - -static void size_write (char *host, char *inst, char *val) -{ - char file[BUFSIZE] = ""; - int len = 0; - - len = snprintf (file, BUFSIZE, SIZE_FILE, inst); - if ((len < 0) || (len >= BUFSIZE)) - return; + if (collectors != NULL) { + for (i = 0; i < max_conns; ++i) { + if (collectors[i] == NULL) + continue; - rrd_update_file (host, file, val, size_ds_def, size_ds_num); - return; -} /* static void size_write (char *host, char *inst, char *val) */ + if (collectors[i]->thread != ((pthread_t) 0)) { + pthread_kill (collectors[i]->thread, SIGTERM); + collectors[i]->thread = (pthread_t) 0; + } -static void score_write (char *host, char *inst, char *val) -{ - rrd_update_file (host, SCORE_FILE, val, score_ds_def, score_ds_num); - return; -} /* static void score_write (char *host, char *inst, char *val) */ + if (collectors[i]->socket >= 0) { + close (collectors[i]->socket); + collectors[i]->socket = -1; + } + } + } /* if (collectors != NULL) */ -static void check_write (char *host, char *inst, char *val) -{ - char file[BUFSIZE] = ""; - int len = 0; + pthread_mutex_unlock (&conns_mutex); - len = snprintf (file, BUFSIZE, CHECK_FILE, inst); - if ((len < 0) || (len >= BUFSIZE)) - return; + unlink (sock_file); + errno = 0; - rrd_update_file (host, file, val, check_ds_def, check_ds_num); - return; -} /* static void check_write (char *host, char *inst, char *val) */ + return (0); +} /* static void email_shutdown (void) */ -#if EMAIL_HAVE_READ -static void type_submit (char *plugin, char *inst, int value) +static void email_submit (const char *type, const char *type_instance, gauge_t value) { - char buf[BUFSIZE] = ""; - int len = 0; - - len = snprintf (buf, BUFSIZE, "%u:%i", (unsigned int)curtime, value); - if ((len < 0) || (len >= BUFSIZE)) - return; - - plugin_submit (plugin, inst, buf); - return; -} /* static void type_submit (char *, char *, int) */ + value_t values[1]; + value_list_t vl = VALUE_LIST_INIT; -static void score_submit (double value) -{ - char buf[BUFSIZE] = ""; - int len = 0; + values[0].gauge = value; - len = snprintf (buf, BUFSIZE, "%u:%.2f", (unsigned int)curtime, value); - if ((len < 0) || (len >= BUFSIZE)) - return; + vl.values = values; + vl.values_len = 1; + vl.time = time (NULL); + strcpy (vl.host, hostname_g); + strcpy (vl.plugin, "email"); + strncpy (vl.type_instance, type_instance, sizeof (vl.type_instance)); - plugin_submit ("email_spam_score", "-", buf); - return; -} /* static void score_submit (double) */ + plugin_dispatch_values (type, &vl); +} /* void email_submit */ /* Copy list l1 to list l2. l2 may partly exist already, but it is assumed * that neither the order nor the name of any element of either list is @@ -817,18 +778,19 @@ static void copy_type_list (type_list_t *l1, type_list_t *l2) return; } -static void email_read (void) +static int email_read (void) { type_t *ptr; - double sc; + double score_old; + int score_count_old; static type_list_t *cnt; static type_list_t *sz; static type_list_t *chk; if (disabled) - return; + return (-1); if (NULL == cnt) { cnt = (type_list_t *)smalloc (sizeof (type_list_t)); @@ -853,7 +815,7 @@ static void email_read (void) pthread_mutex_unlock (&count_mutex); for (ptr = cnt->head; NULL != ptr; ptr = ptr->next) { - type_submit ("email_count", ptr->name, ptr->value); + email_submit ("email_count", ptr->name, ptr->value); } /* email size */ @@ -864,19 +826,21 @@ static void email_read (void) pthread_mutex_unlock (&size_mutex); for (ptr = sz->head; NULL != ptr; ptr = ptr->next) { - type_submit ("email_size", ptr->name, ptr->value); + email_submit ("email_size", ptr->name, ptr->value); } /* spam score */ pthread_mutex_lock (&score_mutex); - sc = score; + score_old = score; + score_count_old = score_count; score = 0.0; score_count = 0; pthread_mutex_unlock (&score_mutex); - score_submit (sc); + if (score_count_old > 0) + email_submit ("spam_score", "", score_old); /* spam checks */ pthread_mutex_lock (&check_mutex); @@ -885,28 +849,18 @@ static void email_read (void) pthread_mutex_unlock (&check_mutex); - for (ptr = chk->head; NULL != ptr; ptr = ptr->next) { - type_submit ("email_spam_check", ptr->name, ptr->value); - } - return; -} /* static void read (void) */ -#else /* if !EMAIL_HAVE_READ */ -# define email_read NULL -#endif + for (ptr = chk->head; NULL != ptr; ptr = ptr->next) + email_submit ("spam_check", ptr->name, ptr->value); + + return (0); +} /* int email_read */ void module_register (void) { - plugin_register (MODULE_NAME, email_init, email_read, NULL); - plugin_register ("email_count", NULL, NULL, count_write); - plugin_register ("email_size", NULL, NULL, size_write); - plugin_register ("email_spam_score", NULL, NULL, score_write); - plugin_register ("email_spam_check", NULL, NULL, check_write); -#if EMAIL_HAVE_READ - plugin_register_shutdown (MODULE_NAME, email_shutdown); - cf_register (MODULE_NAME, email_config, config_keys, config_keys_num); -#endif /* EMAIL_HAVE_READ */ - return; -} /* void module_register (void) */ + plugin_register_config ("email", email_config, config_keys, config_keys_num); + plugin_register_init ("email", email_init); + plugin_register_read ("email", email_read); + plugin_register_shutdown ("email", email_shutdown); +} /* void module_register */ /* vim: set sw=4 ts=4 tw=78 noexpandtab : */ -