From: Florian Forster Date: Fri, 22 May 2015 09:33:27 +0000 (+0200) Subject: Merge branch 'collectd-5.4' into collectd-5.5 X-Git-Tag: collectd-5.5.0~12 X-Git-Url: https://git.verplant.org/?a=commitdiff_plain;h=0beb06563c5681975fd4f743c547e15f4facb29f;p=collectd.git Merge branch 'collectd-5.4' into collectd-5.5 Conflicts: src/write_redis.c --- 0beb06563c5681975fd4f743c547e15f4facb29f diff --cc src/daemon/collectd.h index 6886c123,00000000..80b753c8 mode 100644,000000..100644 --- a/src/daemon/collectd.h +++ b/src/daemon/collectd.h @@@ -1,315 -1,0 +1,319 @@@ +/** + * collectd - src/collectd.h + * Copyright (C) 2005,2006 Florian octo Forster + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + * + * Authors: + * Florian octo Forster + **/ + +#ifndef COLLECTD_H +#define COLLECTD_H + +#if HAVE_CONFIG_H +# include "config.h" +#endif + +#include +#if HAVE_SYS_TYPES_H +# include +#endif +#if HAVE_SYS_STAT_H +# include +#endif +#if STDC_HEADERS +# include +# include +#else +# if HAVE_STDLIB_H +# include +# endif +#endif +#if HAVE_STRING_H +# if !STDC_HEADERS && HAVE_MEMORY_H +# include +# endif +# include +#endif +#if HAVE_STRINGS_H +# include +#endif +#if HAVE_INTTYPES_H +# include +#endif +#if HAVE_STDINT_H +# include +#endif +#if HAVE_UNISTD_H +# include +#endif +#if HAVE_SYS_WAIT_H +# include +#endif +#ifndef WEXITSTATUS +# define WEXITSTATUS(stat_val) ((unsigned int) (stat_val) >> 8) +#endif +#ifndef WIFEXITED +# define WIFEXITED(stat_val) (((stat_val) & 255) == 0) +#endif +#if HAVE_SIGNAL_H +# include +#endif +#if HAVE_FCNTL_H +# include +#endif +#if HAVE_ERRNO_H +# include +#endif +#if HAVE_LIMITS_H +# include +#endif +#if TIME_WITH_SYS_TIME +# include +# include +#else +# if HAVE_SYS_TIME_H +# include +# else +# include +# endif +#endif + +#if HAVE_ASSERT_H +# include +#else +# define assert(...) /* nop */ +#endif + +#if !defined(HAVE__BOOL) || !HAVE__BOOL +typedef int _Bool; +# undef HAVE__BOOL +# define HAVE__BOOL 1 +#endif + +#if NAN_STATIC_DEFAULT +# include +/* #endif NAN_STATIC_DEFAULT*/ +#elif NAN_STATIC_ISOC +# ifndef __USE_ISOC99 +# define DISABLE_ISOC99 1 +# define __USE_ISOC99 1 +# endif /* !defined(__USE_ISOC99) */ +# include +# if DISABLE_ISOC99 +# undef DISABLE_ISOC99 +# undef __USE_ISOC99 +# endif /* DISABLE_ISOC99 */ +/* #endif NAN_STATIC_ISOC */ +#elif NAN_ZERO_ZERO +# include +# ifdef NAN +# undef NAN +# endif +# define NAN (0.0 / 0.0) +# ifndef isnan +# define isnan(f) ((f) != (f)) +# endif /* !defined(isnan) */ +# ifndef isfinite +# define isfinite(f) (((f) - (f)) == 0.0) +# endif +# ifndef isinf +# define isinf(f) (!isfinite(f) && !isnan(f)) +# endif +#endif /* NAN_ZERO_ZERO */ + +/* Try really, really hard to determine endianess. Under NexentaStor 1.0.2 this + * information is in , possibly some other Solaris versions do + * this too.. */ +#if HAVE_ENDIAN_H +# include +#elif HAVE_SYS_ISA_DEFS_H +# include +#endif + +#ifndef BYTE_ORDER +# if defined(_BYTE_ORDER) +# define BYTE_ORDER _BYTE_ORDER +# elif defined(__BYTE_ORDER) +# define BYTE_ORDER __BYTE_ORDER +# elif defined(__DARWIN_BYTE_ORDER) +# define BYTE_ORDER __DARWIN_BYTE_ORDER +# endif +#endif +#ifndef BIG_ENDIAN +# if defined(_BIG_ENDIAN) +# define BIG_ENDIAN _BIG_ENDIAN +# elif defined(__BIG_ENDIAN) +# define BIG_ENDIAN __BIG_ENDIAN +# elif defined(__DARWIN_BIG_ENDIAN) +# define BIG_ENDIAN __DARWIN_BIG_ENDIAN +# endif +#endif +#ifndef LITTLE_ENDIAN +# if defined(_LITTLE_ENDIAN) +# define LITTLE_ENDIAN _LITTLE_ENDIAN +# elif defined(__LITTLE_ENDIAN) +# define LITTLE_ENDIAN __LITTLE_ENDIAN +# elif defined(__DARWIN_LITTLE_ENDIAN) +# define LITTLE_ENDIAN __DARWIN_LITTLE_ENDIAN +# endif +#endif +#ifndef BYTE_ORDER +# if defined(BIG_ENDIAN) && !defined(LITTLE_ENDIAN) +# undef BIG_ENDIAN +# define BIG_ENDIAN 4321 +# define LITTLE_ENDIAN 1234 +# define BYTE_ORDER BIG_ENDIAN +# elif !defined(BIG_ENDIAN) && defined(LITTLE_ENDIAN) +# undef LITTLE_ENDIAN +# define BIG_ENDIAN 4321 +# define LITTLE_ENDIAN 1234 +# define BYTE_ORDER LITTLE_ENDIAN +# endif +#endif +#if !defined(BYTE_ORDER) || !defined(BIG_ENDIAN) +# error "Cannot determine byte order" +#endif + +#if HAVE_DIRENT_H +# include +# define NAMLEN(dirent) strlen((dirent)->d_name) +#else +# define dirent direct +# define NAMLEN(dirent) (dirent)->d_namlen +# if HAVE_SYS_NDIR_H +# include +# endif +# if HAVE_SYS_DIR_H +# include +# endif +# if HAVE_NDIR_H +# include +# endif +#endif + +#if HAVE_STDARG_H +# include +#endif +#if HAVE_CTYPE_H +# include +#endif +#if HAVE_SYS_PARAM_H +# include +#endif + +#if HAVE_KSTAT_H +# include +#endif + +#ifndef PACKAGE_NAME +#define PACKAGE_NAME "collectd" +#endif + +#ifndef PREFIX +#define PREFIX "/opt/" PACKAGE_NAME +#endif + +#ifndef SYSCONFDIR +#define SYSCONFDIR PREFIX "/etc" +#endif + +#ifndef CONFIGFILE +#define CONFIGFILE SYSCONFDIR"/collectd.conf" +#endif + +#ifndef LOCALSTATEDIR +#define LOCALSTATEDIR PREFIX "/var" +#endif + +#ifndef PKGLOCALSTATEDIR +#define PKGLOCALSTATEDIR PREFIX "/var/lib/" PACKAGE_NAME +#endif + +#ifndef PIDFILE +#define PIDFILE PREFIX "/var/run/" PACKAGE_NAME ".pid" +#endif + +#ifndef PLUGINDIR +#define PLUGINDIR PREFIX "/lib/" PACKAGE_NAME +#endif + +#ifndef PKGDATADIR +#define PKGDATADIR PREFIX "/share/" PACKAGE_NAME +#endif + +#ifndef COLLECTD_GRP_NAME +# define COLLECTD_GRP_NAME "collectd" +#endif + +#ifndef COLLECTD_DEFAULT_INTERVAL +# define COLLECTD_DEFAULT_INTERVAL 10.0 +#endif + + #ifndef COLLECTD_USERAGENT + # define COLLECTD_USERAGENT PACKAGE_NAME"/"PACKAGE_VERSION + #endif + +/* Only enable __attribute__() for compilers known to support it. */ +#if defined(__clang__) +# define clang_attr(x) __attribute__(x) +# define gcc_attr(x) /**/ +#elif __GNUC__ +# define clang_attr(x) /**/ +# define gcc_attr(x) __attribute__(x) +#else +# define clang_attr(x) /**/ +# define gcc_attr(x) /**/ +# define __attribute__(x) /**/ +#endif + +#if defined(COLLECT_DEBUG) && COLLECT_DEBUG && defined(__GNUC__) && __GNUC__ +# undef strcpy +# undef strcat +# undef strtok +# pragma GCC poison strcpy strcat strtok +#endif + +/* + * Special hack for the perl plugin: Because the later included perl.h defines + * a macro which is never used, but contains `sprintf', we cannot poison that + * identifies just yet. The parl plugin will do that itself once perl.h is + * included. + */ +#ifndef DONT_POISON_SPRINTF_YET +# if defined(COLLECT_DEBUG) && COLLECT_DEBUG && defined(__GNUC__) && __GNUC__ +# undef sprintf +# pragma GCC poison sprintf +# endif +#endif + ++#ifndef GAUGE_FORMAT ++# define GAUGE_FORMAT "%.15g" ++#endif ++ +/* Type for time as used by "utils_time.h" */ +typedef uint64_t cdtime_t; + +extern char hostname_g[]; +extern cdtime_t interval_g; +extern int pidfile_from_cli; +extern int timeout_g; + +#endif /* COLLECTD_H */ diff --cc src/daemon/common.c index e2b618fb,00000000..e396b79d mode 100644,000000..100644 --- a/src/daemon/common.c +++ b/src/daemon/common.c @@@ -1,1650 -1,0 +1,1649 @@@ +/** + * collectd - src/common.c + * Copyright (C) 2005-2014 Florian octo Forster + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + * + * Authors: + * Florian octo Forster + * Niki W. Waibel + * Sebastian Harl + * MichaÅ MirosÅaw +**/ + +#if HAVE_CONFIG_H +# include "config.h" +#endif + +#include "collectd.h" +#include "common.h" +#include "plugin.h" +#include "utils_cache.h" + +#if HAVE_PTHREAD_H +# include +#endif + +#ifdef HAVE_MATH_H +# include +#endif + +/* for getaddrinfo */ +#include +#include +#include + +#if HAVE_NETINET_IN_H +# include +#endif + +/* for ntohl and htonl */ +#if HAVE_ARPA_INET_H +# include +#endif + +#ifdef HAVE_LIBKSTAT +extern kstat_ctl_t *kc; +#endif + +#if !HAVE_GETPWNAM_R +static pthread_mutex_t getpwnam_r_lock = PTHREAD_MUTEX_INITIALIZER; +#endif + +#if !HAVE_STRERROR_R +static pthread_mutex_t strerror_r_lock = PTHREAD_MUTEX_INITIALIZER; +#endif + +char *sstrncpy (char *dest, const char *src, size_t n) +{ + strncpy (dest, src, n); + dest[n - 1] = '\0'; + + return (dest); +} /* char *sstrncpy */ + +int ssnprintf (char *dest, size_t n, const char *format, ...) +{ + int ret = 0; + va_list ap; + + va_start (ap, format); + ret = vsnprintf (dest, n, format, ap); + dest[n - 1] = '\0'; + va_end (ap); + + return (ret); +} /* int ssnprintf */ + +char *ssnprintf_alloc (char const *format, ...) /* {{{ */ +{ + char static_buffer[1024] = ""; + char *alloc_buffer; + size_t alloc_buffer_size; + int status; + va_list ap; + + /* Try printing into the static buffer. In many cases it will be + * sufficiently large and we can simply return a strdup() of this + * buffer. */ + va_start (ap, format); + status = vsnprintf (static_buffer, sizeof (static_buffer), format, ap); + va_end (ap); + if (status < 0) + return (NULL); + + /* "status" does not include the null byte. */ + alloc_buffer_size = (size_t) (status + 1); + if (alloc_buffer_size <= sizeof (static_buffer)) + return (strdup (static_buffer)); + + /* Allocate a buffer large enough to hold the string. */ + alloc_buffer = malloc (alloc_buffer_size); + if (alloc_buffer == NULL) + return (NULL); + memset (alloc_buffer, 0, alloc_buffer_size); + + /* Print again into this new buffer. */ + va_start (ap, format); + status = vsnprintf (alloc_buffer, alloc_buffer_size, format, ap); + va_end (ap); + if (status < 0) + { + sfree (alloc_buffer); + return (NULL); + } + + return (alloc_buffer); +} /* }}} char *ssnprintf_alloc */ + +char *sstrdup (const char *s) +{ + char *r; + size_t sz; + + if (s == NULL) + return (NULL); + + /* Do not use `strdup' here, because it's not specified in POSIX. It's + * ``only'' an XSI extension. */ + sz = strlen (s) + 1; + r = (char *) malloc (sizeof (char) * sz); + if (r == NULL) + { + ERROR ("sstrdup: Out of memory."); + exit (3); + } + memcpy (r, s, sizeof (char) * sz); + + return (r); +} /* char *sstrdup */ + +/* Even though Posix requires "strerror_r" to return an "int", + * some systems (e.g. the GNU libc) return a "char *" _and_ + * ignore the second argument ... -tokkee */ +char *sstrerror (int errnum, char *buf, size_t buflen) +{ + buf[0] = '\0'; + +#if !HAVE_STRERROR_R + { + char *temp; + + pthread_mutex_lock (&strerror_r_lock); + + temp = strerror (errnum); + sstrncpy (buf, temp, buflen); + + pthread_mutex_unlock (&strerror_r_lock); + } +/* #endif !HAVE_STRERROR_R */ + +#elif STRERROR_R_CHAR_P + { + char *temp; + temp = strerror_r (errnum, buf, buflen); + if (buf[0] == '\0') + { + if ((temp != NULL) && (temp != buf) && (temp[0] != '\0')) + sstrncpy (buf, temp, buflen); + else + sstrncpy (buf, "strerror_r did not return " + "an error message", buflen); + } + } +/* #endif STRERROR_R_CHAR_P */ + +#else + if (strerror_r (errnum, buf, buflen) != 0) + { + ssnprintf (buf, buflen, "Error #%i; " + "Additionally, strerror_r failed.", + errnum); + } +#endif /* STRERROR_R_CHAR_P */ + + return (buf); +} /* char *sstrerror */ + +void *smalloc (size_t size) +{ + void *r; + + if ((r = malloc (size)) == NULL) + { + ERROR ("Not enough memory."); + exit (3); + } + + return (r); +} /* void *smalloc */ + +#if 0 +void sfree (void **ptr) +{ + if (ptr == NULL) + return; + + if (*ptr != NULL) + free (*ptr); + + *ptr = NULL; +} +#endif + +ssize_t sread (int fd, void *buf, size_t count) +{ + char *ptr; + size_t nleft; + ssize_t status; + + ptr = (char *) buf; + nleft = count; + + while (nleft > 0) + { + status = read (fd, (void *) ptr, nleft); + + if ((status < 0) && ((errno == EAGAIN) || (errno == EINTR))) + continue; + + if (status < 0) + return (status); + + if (status == 0) + { + DEBUG ("Received EOF from fd %i. " + "Closing fd and returning error.", + fd); + close (fd); + return (-1); + } + + assert ((0 > status) || (nleft >= (size_t)status)); + + nleft = nleft - status; + ptr = ptr + status; + } + + return (0); +} + + +ssize_t swrite (int fd, const void *buf, size_t count) +{ + const char *ptr; + size_t nleft; + ssize_t status; + + ptr = (const char *) buf; + nleft = count; + + while (nleft > 0) + { + status = write (fd, (const void *) ptr, nleft); + + if ((status < 0) && ((errno == EAGAIN) || (errno == EINTR))) + continue; + + if (status < 0) + return (status); + + nleft = nleft - status; + ptr = ptr + status; + } + + return (0); +} + +int strsplit (char *string, char **fields, size_t size) +{ + size_t i; + char *ptr; + char *saveptr; + + i = 0; + ptr = string; + saveptr = NULL; + while ((fields[i] = strtok_r (ptr, " \t\r\n", &saveptr)) != NULL) + { + ptr = NULL; + i++; + + if (i >= size) + break; + } + + return ((int) i); +} + +int strjoin (char *dst, size_t dst_len, + char **fields, size_t fields_num, + const char *sep) +{ + size_t field_len; + size_t sep_len; + int i; + + memset (dst, '\0', dst_len); + + if (fields_num <= 0) + return (-1); + + sep_len = 0; + if (sep != NULL) + sep_len = strlen (sep); + + for (i = 0; i < (int)fields_num; i++) + { + if ((i > 0) && (sep_len > 0)) + { + if (dst_len <= sep_len) + return (-1); + + strncat (dst, sep, dst_len); + dst_len -= sep_len; + } + + field_len = strlen (fields[i]); + + if (dst_len <= field_len) + return (-1); + + strncat (dst, fields[i], dst_len); + dst_len -= field_len; + } + + return (strlen (dst)); +} + +int strsubstitute (char *str, char c_from, char c_to) +{ + int ret; + + if (str == NULL) + return (-1); + + ret = 0; + while (*str != '\0') + { + if (*str == c_from) + { + *str = c_to; + ret++; + } + str++; + } + + return (ret); +} /* int strsubstitute */ + +int escape_string (char *buffer, size_t buffer_size) +{ + char *temp; + size_t i; + size_t j; + + /* Check if we need to escape at all first */ + temp = strpbrk (buffer, " \t\"\\"); + if (temp == NULL) + return (0); + + if (buffer_size < 3) + return (EINVAL); + + temp = (char *) malloc (buffer_size); + if (temp == NULL) + return (ENOMEM); + memset (temp, 0, buffer_size); + + temp[0] = '"'; + j = 1; + + for (i = 0; i < buffer_size; i++) + { + if (buffer[i] == 0) + { + break; + } + else if ((buffer[i] == '"') || (buffer[i] == '\\')) + { + if (j > (buffer_size - 4)) + break; + temp[j] = '\\'; + temp[j + 1] = buffer[i]; + j += 2; + } + else + { + if (j > (buffer_size - 3)) + break; + temp[j] = buffer[i]; + j++; + } + } + + assert ((j + 1) < buffer_size); + temp[j] = '"'; + temp[j + 1] = 0; + + sstrncpy (buffer, temp, buffer_size); + sfree (temp); + return (0); +} /* int escape_string */ + +int strunescape (char *buf, size_t buf_len) +{ + size_t i; + + for (i = 0; (i < buf_len) && (buf[i] != '\0'); ++i) + { + if (buf[i] != '\\') + continue; + + if (((i + 1) >= buf_len) || (buf[i + 1] == 0)) { + ERROR ("string unescape: backslash found at end of string."); + /* Ensure null-byte at the end of the buffer. */ + buf[i] = 0; + return (-1); + } + + switch (buf[i + 1]) { + case 't': + buf[i] = '\t'; + break; + case 'n': + buf[i] = '\n'; + break; + case 'r': + buf[i] = '\r'; + break; + default: + buf[i] = buf[i + 1]; + break; + } + + /* Move everything after the position one position to the left. + * Add a null-byte as last character in the buffer. */ + memmove (buf + i + 1, buf + i + 2, buf_len - i - 2); + buf[buf_len - 1] = 0; + } + return (0); +} /* int strunescape */ + +size_t strstripnewline (char *buffer) +{ + size_t buffer_len = strlen (buffer); + + while (buffer_len > 0) + { + if ((buffer[buffer_len - 1] != '\n') + && (buffer[buffer_len - 1] != '\r')) + break; + buffer_len--; + buffer[buffer_len] = 0; + } + + return (buffer_len); +} /* size_t strstripnewline */ + +int escape_slashes (char *buffer, size_t buffer_size) +{ + int i; + size_t buffer_len; + + buffer_len = strlen (buffer); + + if (buffer_len <= 1) + { + if (strcmp ("/", buffer) == 0) + { + if (buffer_size < 5) + return (-1); + sstrncpy (buffer, "root", buffer_size); + } + return (0); + } + + /* Move one to the left */ + if (buffer[0] == '/') + { + memmove (buffer, buffer + 1, buffer_len); + buffer_len--; + } + + for (i = 0; i < buffer_len - 1; i++) + { + if (buffer[i] == '/') + buffer[i] = '_'; + } + + return (0); +} /* int escape_slashes */ + +void replace_special (char *buffer, size_t buffer_size) +{ + size_t i; + + for (i = 0; i < buffer_size; i++) + { + if (buffer[i] == 0) + return; + if ((!isalnum ((int) buffer[i])) && (buffer[i] != '-')) + buffer[i] = '_'; + } +} /* void replace_special */ + +int timeval_cmp (struct timeval tv0, struct timeval tv1, struct timeval *delta) +{ + struct timeval *larger; + struct timeval *smaller; + + int status; + + NORMALIZE_TIMEVAL (tv0); + NORMALIZE_TIMEVAL (tv1); + + if ((tv0.tv_sec == tv1.tv_sec) && (tv0.tv_usec == tv1.tv_usec)) + { + if (delta != NULL) { + delta->tv_sec = 0; + delta->tv_usec = 0; + } + return (0); + } + + if ((tv0.tv_sec < tv1.tv_sec) + || ((tv0.tv_sec == tv1.tv_sec) && (tv0.tv_usec < tv1.tv_usec))) + { + larger = &tv1; + smaller = &tv0; + status = -1; + } + else + { + larger = &tv0; + smaller = &tv1; + status = 1; + } + + if (delta != NULL) { + delta->tv_sec = larger->tv_sec - smaller->tv_sec; + + if (smaller->tv_usec <= larger->tv_usec) + delta->tv_usec = larger->tv_usec - smaller->tv_usec; + else + { + --delta->tv_sec; + delta->tv_usec = 1000000 + larger->tv_usec - smaller->tv_usec; + } + } + + assert ((delta == NULL) + || ((0 <= delta->tv_usec) && (delta->tv_usec < 1000000))); + + return (status); +} /* int timeval_cmp */ + +int check_create_dir (const char *file_orig) +{ + struct stat statbuf; + + char file_copy[512]; + char dir[512]; + int dir_len = 512; + char *fields[16]; + int fields_num; + char *ptr; + char *saveptr; + int last_is_file = 1; + int path_is_absolute = 0; + size_t len; + int i; + + /* + * Sanity checks first + */ + if (file_orig == NULL) + return (-1); + + if ((len = strlen (file_orig)) < 1) + return (-1); + else if (len >= sizeof (file_copy)) + return (-1); + + /* + * If `file_orig' ends in a slash the last component is a directory, + * otherwise it's a file. Act accordingly.. + */ + if (file_orig[len - 1] == '/') + last_is_file = 0; + if (file_orig[0] == '/') + path_is_absolute = 1; + + /* + * Create a copy for `strtok_r' to destroy + */ + sstrncpy (file_copy, file_orig, sizeof (file_copy)); + + /* + * Break into components. This will eat up several slashes in a row and + * remove leading and trailing slashes.. + */ + ptr = file_copy; + saveptr = NULL; + fields_num = 0; + while ((fields[fields_num] = strtok_r (ptr, "/", &saveptr)) != NULL) + { + ptr = NULL; + fields_num++; + + if (fields_num >= 16) + break; + } + + /* + * For each component, do.. + */ + for (i = 0; i < (fields_num - last_is_file); i++) + { + /* + * Do not create directories that start with a dot. This + * prevents `../../' attacks and other likely malicious + * behavior. + */ + if (fields[i][0] == '.') + { + ERROR ("Cowardly refusing to create a directory that " + "begins with a `.' (dot): `%s'", file_orig); + return (-2); + } + + /* + * Join the components together again + */ + dir[0] = '/'; + if (strjoin (dir + path_is_absolute, dir_len - path_is_absolute, + fields, i + 1, "/") < 0) + { + ERROR ("strjoin failed: `%s', component #%i", file_orig, i); + return (-1); + } + + while (42) { + if ((stat (dir, &statbuf) == -1) + && (lstat (dir, &statbuf) == -1)) + { + if (errno == ENOENT) + { + if (mkdir (dir, S_IRWXU | S_IRWXG | S_IRWXO) == 0) + break; + + /* this might happen, if a different thread created + * the directory in the meantime + * => call stat() again to check for S_ISDIR() */ + if (EEXIST == errno) + continue; + + char errbuf[1024]; + ERROR ("check_create_dir: mkdir (%s): %s", dir, + sstrerror (errno, + errbuf, sizeof (errbuf))); + return (-1); + } + else + { + char errbuf[1024]; + ERROR ("check_create_dir: stat (%s): %s", dir, + sstrerror (errno, errbuf, + sizeof (errbuf))); + return (-1); + } + } + else if (!S_ISDIR (statbuf.st_mode)) + { + ERROR ("check_create_dir: `%s' exists but is not " + "a directory!", dir); + return (-1); + } + break; + } + } + + return (0); +} /* check_create_dir */ + +#ifdef HAVE_LIBKSTAT +int get_kstat (kstat_t **ksp_ptr, char *module, int instance, char *name) +{ + char ident[128]; + + *ksp_ptr = NULL; + + if (kc == NULL) + return (-1); + + ssnprintf (ident, sizeof (ident), "%s,%i,%s", module, instance, name); + + *ksp_ptr = kstat_lookup (kc, module, instance, name); + if (*ksp_ptr == NULL) + { + ERROR ("get_kstat: Cound not find kstat %s", ident); + return (-1); + } + + if ((*ksp_ptr)->ks_type != KSTAT_TYPE_NAMED) + { + ERROR ("get_kstat: kstat %s has wrong type", ident); + *ksp_ptr = NULL; + return (-1); + } + +#ifdef assert + assert (*ksp_ptr != NULL); + assert ((*ksp_ptr)->ks_type == KSTAT_TYPE_NAMED); +#endif + + if (kstat_read (kc, *ksp_ptr, NULL) == -1) + { + ERROR ("get_kstat: kstat %s could not be read", ident); + return (-1); + } + + if ((*ksp_ptr)->ks_type != KSTAT_TYPE_NAMED) + { + ERROR ("get_kstat: kstat %s has wrong type", ident); + return (-1); + } + + return (0); +} + +long long get_kstat_value (kstat_t *ksp, char *name) +{ + kstat_named_t *kn; + long long retval = -1LL; + + if (ksp == NULL) + { + ERROR ("get_kstat_value (\"%s\"): ksp is NULL.", name); + return (-1LL); + } + else if (ksp->ks_type != KSTAT_TYPE_NAMED) + { + ERROR ("get_kstat_value (\"%s\"): ksp->ks_type (%#x) " + "is not KSTAT_TYPE_NAMED (%#x).", + name, + (unsigned int) ksp->ks_type, + (unsigned int) KSTAT_TYPE_NAMED); + return (-1LL); + } + + if ((kn = (kstat_named_t *) kstat_data_lookup (ksp, name)) == NULL) + return (-1LL); + + if (kn->data_type == KSTAT_DATA_INT32) + retval = (long long) kn->value.i32; + else if (kn->data_type == KSTAT_DATA_UINT32) + retval = (long long) kn->value.ui32; + else if (kn->data_type == KSTAT_DATA_INT64) + retval = (long long) kn->value.i64; /* According to ANSI C99 `long long' must hold at least 64 bits */ + else if (kn->data_type == KSTAT_DATA_UINT64) + retval = (long long) kn->value.ui64; /* XXX: Might overflow! */ + else + WARNING ("get_kstat_value: Not a numeric value: %s", name); + + return (retval); +} +#endif /* HAVE_LIBKSTAT */ + +#ifndef HAVE_HTONLL +unsigned long long ntohll (unsigned long long n) +{ +#if BYTE_ORDER == BIG_ENDIAN + return (n); +#else + return (((unsigned long long) ntohl (n)) << 32) + ntohl (n >> 32); +#endif +} /* unsigned long long ntohll */ + +unsigned long long htonll (unsigned long long n) +{ +#if BYTE_ORDER == BIG_ENDIAN + return (n); +#else + return (((unsigned long long) htonl (n)) << 32) + htonl (n >> 32); +#endif +} /* unsigned long long htonll */ +#endif /* HAVE_HTONLL */ + +#if FP_LAYOUT_NEED_NOTHING +/* Well, we need nothing.. */ +/* #endif FP_LAYOUT_NEED_NOTHING */ + +#elif FP_LAYOUT_NEED_ENDIANFLIP || FP_LAYOUT_NEED_INTSWAP +# if FP_LAYOUT_NEED_ENDIANFLIP +# define FP_CONVERT(A) ((((uint64_t)(A) & 0xff00000000000000LL) >> 56) | \ + (((uint64_t)(A) & 0x00ff000000000000LL) >> 40) | \ + (((uint64_t)(A) & 0x0000ff0000000000LL) >> 24) | \ + (((uint64_t)(A) & 0x000000ff00000000LL) >> 8) | \ + (((uint64_t)(A) & 0x00000000ff000000LL) << 8) | \ + (((uint64_t)(A) & 0x0000000000ff0000LL) << 24) | \ + (((uint64_t)(A) & 0x000000000000ff00LL) << 40) | \ + (((uint64_t)(A) & 0x00000000000000ffLL) << 56)) +# else +# define FP_CONVERT(A) ((((uint64_t)(A) & 0xffffffff00000000LL) >> 32) | \ + (((uint64_t)(A) & 0x00000000ffffffffLL) << 32)) +# endif + +double ntohd (double d) +{ + union + { + uint8_t byte[8]; + uint64_t integer; + double floating; + } ret; + + ret.floating = d; + + /* NAN in x86 byte order */ + if ((ret.byte[0] == 0x00) && (ret.byte[1] == 0x00) + && (ret.byte[2] == 0x00) && (ret.byte[3] == 0x00) + && (ret.byte[4] == 0x00) && (ret.byte[5] == 0x00) + && (ret.byte[6] == 0xf8) && (ret.byte[7] == 0x7f)) + { + return (NAN); + } + else + { + uint64_t tmp; + + tmp = ret.integer; + ret.integer = FP_CONVERT (tmp); + return (ret.floating); + } +} /* double ntohd */ + +double htond (double d) +{ + union + { + uint8_t byte[8]; + uint64_t integer; + double floating; + } ret; + + if (isnan (d)) + { + ret.byte[0] = ret.byte[1] = ret.byte[2] = ret.byte[3] = 0x00; + ret.byte[4] = ret.byte[5] = 0x00; + ret.byte[6] = 0xf8; + ret.byte[7] = 0x7f; + return (ret.floating); + } + else + { + uint64_t tmp; + + ret.floating = d; + tmp = FP_CONVERT (ret.integer); + ret.integer = tmp; + return (ret.floating); + } +} /* double htond */ +#endif /* FP_LAYOUT_NEED_ENDIANFLIP || FP_LAYOUT_NEED_INTSWAP */ + +int format_name (char *ret, int ret_len, + const char *hostname, + const char *plugin, const char *plugin_instance, + const char *type, const char *type_instance) +{ + char *buffer; + size_t buffer_size; + + buffer = ret; + buffer_size = (size_t) ret_len; + +#define APPEND(str) do { \ + size_t l = strlen (str); \ + if (l >= buffer_size) \ + return (ENOBUFS); \ + memcpy (buffer, (str), l); \ + buffer += l; buffer_size -= l; \ +} while (0) + + assert (plugin != NULL); + assert (type != NULL); + + APPEND (hostname); + APPEND ("/"); + APPEND (plugin); + if ((plugin_instance != NULL) && (plugin_instance[0] != 0)) + { + APPEND ("-"); + APPEND (plugin_instance); + } + APPEND ("/"); + APPEND (type); + if ((type_instance != NULL) && (type_instance[0] != 0)) + { + APPEND ("-"); + APPEND (type_instance); + } + assert (buffer_size > 0); + buffer[0] = 0; + +#undef APPEND + return (0); +} /* int format_name */ + +int format_values (char *ret, size_t ret_len, /* {{{ */ + const data_set_t *ds, const value_list_t *vl, + _Bool store_rates) +{ + size_t offset = 0; + int status; + int i; + gauge_t *rates = NULL; + + assert (0 == strcmp (ds->type, vl->type)); + + memset (ret, 0, ret_len); + +#define BUFFER_ADD(...) do { \ + status = ssnprintf (ret + offset, ret_len - offset, \ + __VA_ARGS__); \ + if (status < 1) \ + { \ + sfree (rates); \ + return (-1); \ + } \ + else if (((size_t) status) >= (ret_len - offset)) \ + { \ + sfree (rates); \ + return (-1); \ + } \ + else \ + offset += ((size_t) status); \ +} while (0) + + BUFFER_ADD ("%.3f", CDTIME_T_TO_DOUBLE (vl->time)); + + for (i = 0; i < ds->ds_num; i++) + { + if (ds->ds[i].type == DS_TYPE_GAUGE) - BUFFER_ADD (":%f", vl->values[i].gauge); ++ BUFFER_ADD (":"GAUGE_FORMAT, vl->values[i].gauge); + else if (store_rates) + { + if (rates == NULL) + rates = uc_get_rate (ds, vl); + if (rates == NULL) + { - WARNING ("format_values: " - "uc_get_rate failed."); ++ WARNING ("format_values: uc_get_rate failed."); + return (-1); + } - BUFFER_ADD (":%g", rates[i]); ++ BUFFER_ADD (":"GAUGE_FORMAT, rates[i]); + } + else if (ds->ds[i].type == DS_TYPE_COUNTER) + BUFFER_ADD (":%llu", vl->values[i].counter); + else if (ds->ds[i].type == DS_TYPE_DERIVE) + BUFFER_ADD (":%"PRIi64, vl->values[i].derive); + else if (ds->ds[i].type == DS_TYPE_ABSOLUTE) + BUFFER_ADD (":%"PRIu64, vl->values[i].absolute); + else + { - ERROR ("format_values plugin: Unknown data source type: %i", ++ ERROR ("format_values: Unknown data source type: %i", + ds->ds[i].type); + sfree (rates); + return (-1); + } + } /* for ds->ds_num */ + +#undef BUFFER_ADD + + sfree (rates); + return (0); +} /* }}} int format_values */ + +int parse_identifier (char *str, char **ret_host, + char **ret_plugin, char **ret_plugin_instance, + char **ret_type, char **ret_type_instance) +{ + char *hostname = NULL; + char *plugin = NULL; + char *plugin_instance = NULL; + char *type = NULL; + char *type_instance = NULL; + + hostname = str; + if (hostname == NULL) + return (-1); + + plugin = strchr (hostname, '/'); + if (plugin == NULL) + return (-1); + *plugin = '\0'; plugin++; + + type = strchr (plugin, '/'); + if (type == NULL) + return (-1); + *type = '\0'; type++; + + plugin_instance = strchr (plugin, '-'); + if (plugin_instance != NULL) + { + *plugin_instance = '\0'; + plugin_instance++; + } + + type_instance = strchr (type, '-'); + if (type_instance != NULL) + { + *type_instance = '\0'; + type_instance++; + } + + *ret_host = hostname; + *ret_plugin = plugin; + *ret_plugin_instance = plugin_instance; + *ret_type = type; + *ret_type_instance = type_instance; + return (0); +} /* int parse_identifier */ + +int parse_identifier_vl (const char *str, value_list_t *vl) /* {{{ */ +{ + char str_copy[6 * DATA_MAX_NAME_LEN]; + char *host = NULL; + char *plugin = NULL; + char *plugin_instance = NULL; + char *type = NULL; + char *type_instance = NULL; + int status; + + if ((str == NULL) || (vl == NULL)) + return (EINVAL); + + sstrncpy (str_copy, str, sizeof (str_copy)); + + status = parse_identifier (str_copy, &host, + &plugin, &plugin_instance, + &type, &type_instance); + if (status != 0) + return (status); + + sstrncpy (vl->host, host, sizeof (vl->host)); + sstrncpy (vl->plugin, plugin, sizeof (vl->plugin)); + sstrncpy (vl->plugin_instance, + (plugin_instance != NULL) ? plugin_instance : "", + sizeof (vl->plugin_instance)); + sstrncpy (vl->type, type, sizeof (vl->type)); + sstrncpy (vl->type_instance, + (type_instance != NULL) ? type_instance : "", + sizeof (vl->type_instance)); + + return (0); +} /* }}} int parse_identifier_vl */ + +int parse_value (const char *value_orig, value_t *ret_value, int ds_type) +{ + char *value; + char *endptr = NULL; + size_t value_len; + + if (value_orig == NULL) + return (EINVAL); + + value = strdup (value_orig); + if (value == NULL) + return (ENOMEM); + value_len = strlen (value); + + while ((value_len > 0) && isspace ((int) value[value_len - 1])) + { + value[value_len - 1] = 0; + value_len--; + } + + switch (ds_type) + { + case DS_TYPE_COUNTER: + ret_value->counter = (counter_t) strtoull (value, &endptr, 0); + break; + + case DS_TYPE_GAUGE: + ret_value->gauge = (gauge_t) strtod (value, &endptr); + break; + + case DS_TYPE_DERIVE: + ret_value->derive = (derive_t) strtoll (value, &endptr, 0); + break; + + case DS_TYPE_ABSOLUTE: + ret_value->absolute = (absolute_t) strtoull (value, &endptr, 0); + break; + + default: + sfree (value); + ERROR ("parse_value: Invalid data source type: %i.", ds_type); + return -1; + } + + if (value == endptr) { + ERROR ("parse_value: Failed to parse string as %s: %s.", + DS_TYPE_TO_STRING (ds_type), value); + sfree (value); + return -1; + } + else if ((NULL != endptr) && ('\0' != *endptr)) + INFO ("parse_value: Ignoring trailing garbage \"%s\" after %s value. " + "Input string was \"%s\".", + endptr, DS_TYPE_TO_STRING (ds_type), value_orig); + + sfree (value); + return 0; +} /* int parse_value */ + +int parse_values (char *buffer, value_list_t *vl, const data_set_t *ds) +{ + int i; + char *dummy; + char *ptr; + char *saveptr; + + i = -1; + dummy = buffer; + saveptr = NULL; + while ((ptr = strtok_r (dummy, ":", &saveptr)) != NULL) + { + dummy = NULL; + + if (i >= vl->values_len) + { + /* Make sure i is invalid. */ + i = vl->values_len + 1; + break; + } + + if (i == -1) + { + if (strcmp ("N", ptr) == 0) + vl->time = cdtime (); + else + { + char *endptr = NULL; + double tmp; + + errno = 0; + tmp = strtod (ptr, &endptr); + if ((errno != 0) /* Overflow */ + || (endptr == ptr) /* Invalid string */ + || (endptr == NULL) /* This should not happen */ + || (*endptr != 0)) /* Trailing chars */ + return (-1); + + vl->time = DOUBLE_TO_CDTIME_T (tmp); + } + } + else + { + if ((strcmp ("U", ptr) == 0) && (ds->ds[i].type == DS_TYPE_GAUGE)) + vl->values[i].gauge = NAN; + else if (0 != parse_value (ptr, &vl->values[i], ds->ds[i].type)) + return -1; + } + + i++; + } /* while (strtok_r) */ + + if ((ptr != NULL) || (i != vl->values_len)) + return (-1); + return (0); +} /* int parse_values */ + +#if !HAVE_GETPWNAM_R +int getpwnam_r (const char *name, struct passwd *pwbuf, char *buf, + size_t buflen, struct passwd **pwbufp) +{ + int status = 0; + struct passwd *pw; + + memset (pwbuf, '\0', sizeof (struct passwd)); + + pthread_mutex_lock (&getpwnam_r_lock); + + do + { + pw = getpwnam (name); + if (pw == NULL) + { + status = (errno != 0) ? errno : ENOENT; + break; + } + +#define GETPWNAM_COPY_MEMBER(member) \ + if (pw->member != NULL) \ + { \ + int len = strlen (pw->member); \ + if (len >= buflen) \ + { \ + status = ENOMEM; \ + break; \ + } \ + sstrncpy (buf, pw->member, buflen); \ + pwbuf->member = buf; \ + buf += (len + 1); \ + buflen -= (len + 1); \ + } + GETPWNAM_COPY_MEMBER(pw_name); + GETPWNAM_COPY_MEMBER(pw_passwd); + GETPWNAM_COPY_MEMBER(pw_gecos); + GETPWNAM_COPY_MEMBER(pw_dir); + GETPWNAM_COPY_MEMBER(pw_shell); + + pwbuf->pw_uid = pw->pw_uid; + pwbuf->pw_gid = pw->pw_gid; + + if (pwbufp != NULL) + *pwbufp = pwbuf; + } while (0); + + pthread_mutex_unlock (&getpwnam_r_lock); + + return (status); +} /* int getpwnam_r */ +#endif /* !HAVE_GETPWNAM_R */ + +int notification_init (notification_t *n, int severity, const char *message, + const char *host, + const char *plugin, const char *plugin_instance, + const char *type, const char *type_instance) +{ + memset (n, '\0', sizeof (notification_t)); + + n->severity = severity; + + if (message != NULL) + sstrncpy (n->message, message, sizeof (n->message)); + if (host != NULL) + sstrncpy (n->host, host, sizeof (n->host)); + if (plugin != NULL) + sstrncpy (n->plugin, plugin, sizeof (n->plugin)); + if (plugin_instance != NULL) + sstrncpy (n->plugin_instance, plugin_instance, + sizeof (n->plugin_instance)); + if (type != NULL) + sstrncpy (n->type, type, sizeof (n->type)); + if (type_instance != NULL) + sstrncpy (n->type_instance, type_instance, + sizeof (n->type_instance)); + + return (0); +} /* int notification_init */ + +int walk_directory (const char *dir, dirwalk_callback_f callback, + void *user_data, int include_hidden) +{ + struct dirent *ent; + DIR *dh; + int success; + int failure; + + success = 0; + failure = 0; + + if ((dh = opendir (dir)) == NULL) + { + char errbuf[1024]; + ERROR ("walk_directory: Cannot open '%s': %s", dir, + sstrerror (errno, errbuf, sizeof (errbuf))); + return -1; + } + + while ((ent = readdir (dh)) != NULL) + { + int status; + + if (include_hidden) + { + if ((strcmp (".", ent->d_name) == 0) + || (strcmp ("..", ent->d_name) == 0)) + continue; + } + else /* if (!include_hidden) */ + { + if (ent->d_name[0]=='.') + continue; + } + + status = (*callback) (dir, ent->d_name, user_data); + if (status != 0) + failure++; + else + success++; + } + + closedir (dh); + + if ((success == 0) && (failure > 0)) + return (-1); + return (0); +} + +ssize_t read_file_contents (const char *filename, char *buf, size_t bufsize) +{ + FILE *fh; + ssize_t ret; + + fh = fopen (filename, "r"); + if (fh == NULL) + return (-1); + + ret = (ssize_t) fread (buf, 1, bufsize, fh); + if ((ret == 0) && (ferror (fh) != 0)) + { + ERROR ("read_file_contents: Reading file \"%s\" failed.", + filename); + ret = -1; + } + + fclose(fh); + return (ret); +} + +counter_t counter_diff (counter_t old_value, counter_t new_value) +{ + counter_t diff; + + if (old_value > new_value) + { + if (old_value <= 4294967295U) + diff = (4294967295U - old_value) + new_value; + else + diff = (18446744073709551615ULL - old_value) + + new_value; + } + else + { + diff = new_value - old_value; + } + + return (diff); +} /* counter_t counter_diff */ + +int rate_to_value (value_t *ret_value, gauge_t rate, /* {{{ */ + rate_to_value_state_t *state, + int ds_type, cdtime_t t) +{ + gauge_t delta_gauge; + cdtime_t delta_t; + + if (ds_type == DS_TYPE_GAUGE) + { + state->last_value.gauge = rate; + state->last_time = t; + + *ret_value = state->last_value; + return (0); + } + + /* Counter and absolute can't handle negative rates. Reset "last time" + * to zero, so that the next valid rate will re-initialize the + * structure. */ + if ((rate < 0.0) + && ((ds_type == DS_TYPE_COUNTER) + || (ds_type == DS_TYPE_ABSOLUTE))) + { + memset (state, 0, sizeof (*state)); + return (EINVAL); + } + + /* Another invalid state: The time is not increasing. */ + if (t <= state->last_time) + { + memset (state, 0, sizeof (*state)); + return (EINVAL); + } + + delta_t = t - state->last_time; + delta_gauge = (rate * CDTIME_T_TO_DOUBLE (delta_t)) + state->residual; + + /* Previous value is invalid. */ + if (state->last_time == 0) /* {{{ */ + { + if (ds_type == DS_TYPE_DERIVE) + { + state->last_value.derive = (derive_t) rate; + state->residual = rate - ((gauge_t) state->last_value.derive); + } + else if (ds_type == DS_TYPE_COUNTER) + { + state->last_value.counter = (counter_t) rate; + state->residual = rate - ((gauge_t) state->last_value.counter); + } + else if (ds_type == DS_TYPE_ABSOLUTE) + { + state->last_value.absolute = (absolute_t) rate; + state->residual = rate - ((gauge_t) state->last_value.absolute); + } + else + { + assert (23 == 42); + } + + state->last_time = t; + return (EAGAIN); + } /* }}} */ + + if (ds_type == DS_TYPE_DERIVE) + { + derive_t delta_derive = (derive_t) delta_gauge; + + state->last_value.derive += delta_derive; + state->residual = delta_gauge - ((gauge_t) delta_derive); + } + else if (ds_type == DS_TYPE_COUNTER) + { + counter_t delta_counter = (counter_t) delta_gauge; + + state->last_value.counter += delta_counter; + state->residual = delta_gauge - ((gauge_t) delta_counter); + } + else if (ds_type == DS_TYPE_ABSOLUTE) + { + absolute_t delta_absolute = (absolute_t) delta_gauge; + + state->last_value.absolute = delta_absolute; + state->residual = delta_gauge - ((gauge_t) delta_absolute); + } + else + { + assert (23 == 42); + } + + state->last_time = t; + *ret_value = state->last_value; + return (0); +} /* }}} value_t rate_to_value */ + +int value_to_rate (value_t *ret_rate, derive_t value, /* {{{ */ + value_to_rate_state_t *state, + int ds_type, cdtime_t t) +{ + double interval; + + /* Another invalid state: The time is not increasing. */ + if (t <= state->last_time) + { + memset (state, 0, sizeof (*state)); + return (EINVAL); + } + + interval = CDTIME_T_TO_DOUBLE(t - state->last_time); + + /* Previous value is invalid. */ + if (state->last_time == 0) /* {{{ */ + { + if (ds_type == DS_TYPE_DERIVE) + { + state->last_value.derive = value; + } + else if (ds_type == DS_TYPE_COUNTER) + { + state->last_value.counter = (counter_t) value; + } + else if (ds_type == DS_TYPE_ABSOLUTE) + { + state->last_value.absolute = (absolute_t) value; + } + else + { + assert (23 == 42); + } + + state->last_time = t; + return (EAGAIN); + } /* }}} */ + + if (ds_type == DS_TYPE_DERIVE) + { + ret_rate->gauge = (value - state->last_value.derive) / interval; + state->last_value.derive = value; + } + else if (ds_type == DS_TYPE_COUNTER) + { + ret_rate->gauge = (((counter_t)value) - state->last_value.counter) / interval; + state->last_value.counter = (counter_t) value; + } + else if (ds_type == DS_TYPE_ABSOLUTE) + { + ret_rate->gauge = (((absolute_t)value) - state->last_value.absolute) / interval; + state->last_value.absolute = (absolute_t) value; + } + else + { + assert (23 == 42); + } + + state->last_time = t; + return (0); +} /* }}} value_t rate_to_value */ + +int service_name_to_port_number (const char *service_name) +{ + struct addrinfo *ai_list; + struct addrinfo *ai_ptr; + struct addrinfo ai_hints; + int status; + int service_number; + + if (service_name == NULL) + return (-1); + + ai_list = NULL; + memset (&ai_hints, 0, sizeof (ai_hints)); + ai_hints.ai_family = AF_UNSPEC; + + status = getaddrinfo (/* node = */ NULL, service_name, + &ai_hints, &ai_list); + if (status != 0) + { + ERROR ("service_name_to_port_number: getaddrinfo failed: %s", + gai_strerror (status)); + return (-1); + } + + service_number = -1; + for (ai_ptr = ai_list; ai_ptr != NULL; ai_ptr = ai_ptr->ai_next) + { + if (ai_ptr->ai_family == AF_INET) + { + struct sockaddr_in *sa; + + sa = (void *) ai_ptr->ai_addr; + service_number = (int) ntohs (sa->sin_port); + } + else if (ai_ptr->ai_family == AF_INET6) + { + struct sockaddr_in6 *sa; + + sa = (void *) ai_ptr->ai_addr; + service_number = (int) ntohs (sa->sin6_port); + } + + if ((service_number > 0) && (service_number <= 65535)) + break; + } + + freeaddrinfo (ai_list); + + if ((service_number > 0) && (service_number <= 65535)) + return (service_number); + return (-1); +} /* int service_name_to_port_number */ + +int strtoderive (const char *string, derive_t *ret_value) /* {{{ */ +{ + derive_t tmp; + char *endptr; + + if ((string == NULL) || (ret_value == NULL)) + return (EINVAL); + + errno = 0; + endptr = NULL; + tmp = (derive_t) strtoll (string, &endptr, /* base = */ 0); + if ((endptr == string) || (errno != 0)) + return (-1); + + *ret_value = tmp; + return (0); +} /* }}} int strtoderive */ + +int strtogauge (const char *string, gauge_t *ret_value) /* {{{ */ +{ + gauge_t tmp; + char *endptr = NULL; + + if ((string == NULL) || (ret_value == NULL)) + return (EINVAL); + + errno = 0; + endptr = NULL; + tmp = (gauge_t) strtod (string, &endptr); + if (errno != 0) + return (errno); + else if ((endptr == NULL) || (*endptr != 0)) + return (EINVAL); + + *ret_value = tmp; + return (0); +} /* }}} int strtogauge */ + +int strarray_add (char ***ret_array, size_t *ret_array_len, char const *str) /* {{{ */ +{ + char **array; + size_t array_len = *ret_array_len; + + if (str == NULL) + return (EINVAL); + + array = realloc (*ret_array, + (array_len + 1) * sizeof (*array)); + if (array == NULL) + return (ENOMEM); + *ret_array = array; + + array[array_len] = strdup (str); + if (array[array_len] == NULL) + return (ENOMEM); + + array_len++; + *ret_array_len = array_len; + return (0); +} /* }}} int strarray_add */ + +void strarray_free (char **array, size_t array_len) /* {{{ */ +{ + size_t i; + + for (i = 0; i < array_len; i++) + sfree (array[i]); + sfree (array); +} /* }}} void strarray_free */