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/*
* Copyright (c) 2013 Red Hat.
* Copyright (c) 1995-2001,2004 Silicon Graphics, Inc. All Rights Reserved.
*
* This library is free software; you can redistribute it and/or modify it
* 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.
*
* This library 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 Lesser General Public
* License for more details.
*/
#include "pmapi.h"
#include "impl.h"
#include "fault.h"
#include <ctype.h>
#ifdef HAVE_SECURE_SOCKETS
#include <prerror.h>
#include <secerr.h>
#include <sslerr.h>
#include <sasl.h>
#endif
#ifdef IS_MINGW
extern const char *strerror_r(int, char *, size_t);
#endif
/*
* if you modify this table at all, be sure to remake qa/006
*/
static const struct {
int err;
char *symb;
char *errmess;
} errtab[] = {
{ PM_ERR_GENERIC, "PM_ERR_GENERIC",
"Generic error, already reported above" },
{ PM_ERR_PMNS, "PM_ERR_PMNS",
"Problems parsing PMNS definitions" },
{ PM_ERR_NOPMNS, "PM_ERR_NOPMNS",
"PMNS not accessible" },
{ PM_ERR_DUPPMNS, "PM_ERR_DUPPMNS",
"Attempt to reload the PMNS" },
{ PM_ERR_TEXT, "PM_ERR_TEXT",
"One-line or help text is not available" },
{ PM_ERR_APPVERSION, "PM_ERR_APPVERSION",
"Metric not supported by this version of monitored application" },
{ PM_ERR_VALUE, "PM_ERR_VALUE",
"Missing metric value(s)" },
{ PM_ERR_TIMEOUT, "PM_ERR_TIMEOUT",
"Timeout waiting for a response from PMCD" },
{ PM_ERR_NODATA, "PM_ERR_NODATA",
"Empty archive log file" },
{ PM_ERR_RESET, "PM_ERR_RESET",
"PMCD reset or configuration change" },
{ PM_ERR_NAME, "PM_ERR_NAME",
"Unknown metric name" },
{ PM_ERR_PMID, "PM_ERR_PMID",
"Unknown or illegal metric identifier" },
{ PM_ERR_INDOM, "PM_ERR_INDOM",
"Unknown or illegal instance domain identifier" },
{ PM_ERR_INST, "PM_ERR_INST",
"Unknown or illegal instance identifier" },
{ PM_ERR_TYPE, "PM_ERR_TYPE",
"Unknown or illegal metric type" },
{ PM_ERR_UNIT, "PM_ERR_UNIT",
"Illegal pmUnits specification" },
{ PM_ERR_CONV, "PM_ERR_CONV",
"Impossible value or scale conversion" },
{ PM_ERR_TRUNC, "PM_ERR_TRUNC",
"Truncation in value conversion" },
{ PM_ERR_SIGN, "PM_ERR_SIGN",
"Negative value in conversion to unsigned" },
{ PM_ERR_PROFILE, "PM_ERR_PROFILE",
"Explicit instance identifier(s) required" },
{ PM_ERR_IPC, "PM_ERR_IPC",
"IPC protocol failure" },
{ PM_ERR_EOF, "PM_ERR_EOF",
"IPC channel closed" },
{ PM_ERR_NOTHOST, "PM_ERR_NOTHOST",
"Operation requires context with host source of metrics" },
{ PM_ERR_EOL, "PM_ERR_EOL",
"End of PCP archive log" },
{ PM_ERR_MODE, "PM_ERR_MODE",
"Illegal mode specification" },
{ PM_ERR_LABEL, "PM_ERR_LABEL",
"Illegal label record at start of a PCP archive log file" },
{ PM_ERR_LOGREC, "PM_ERR_LOGREC",
"Corrupted record in a PCP archive log" },
{ PM_ERR_LOGFILE, "PM_ERR_LOGFILE",
"Missing PCP archive log file" },
{ PM_ERR_NOTARCHIVE, "PM_ERR_NOTARCHIVE",
"Operation requires context with archive source of metrics" },
{ PM_ERR_NOCONTEXT, "PM_ERR_NOCONTEXT",
"Attempt to use an illegal context" },
{ PM_ERR_PROFILESPEC, "PM_ERR_PROFILESPEC",
"NULL pmInDom with non-NULL instlist" },
{ PM_ERR_PMID_LOG, "PM_ERR_PMID_LOG",
"Metric not defined in the PCP archive log" },
{ PM_ERR_INDOM_LOG, "PM_ERR_INDOM_LOG",
"Instance domain identifier not defined in the PCP archive log" },
{ PM_ERR_INST_LOG, "PM_ERR_INST_LOG",
"Instance identifier not defined in the PCP archive log" },
{ PM_ERR_NOPROFILE, "PM_ERR_NOPROFILE",
"Missing profile - protocol botch" },
{ PM_ERR_NOAGENT, "PM_ERR_NOAGENT",
"No PMCD agent for domain of request" },
{ PM_ERR_PERMISSION, "PM_ERR_PERMISSION",
"No permission to perform requested operation" },
{ PM_ERR_CONNLIMIT, "PM_ERR_CONNLIMIT",
"PMCD connection limit for this host exceeded" },
{ PM_ERR_AGAIN, "PM_ERR_AGAIN",
"Try again. Information not currently available" },
{ PM_ERR_ISCONN, "PM_ERR_ISCONN",
"Already Connected" },
{ PM_ERR_NOTCONN, "PM_ERR_NOTCONN",
"Not Connected" },
{ PM_ERR_NEEDPORT, "PM_ERR_NEEDPORT",
"A non-null port name is required" },
{ PM_ERR_NONLEAF, "PM_ERR_NONLEAF",
"Metric name is not a leaf in PMNS" },
{ PM_ERR_PMDANOTREADY, "PM_ERR_PMDANOTREADY",
"PMDA is not yet ready to respond to requests" },
{ PM_ERR_PMDAREADY, "PM_ERR_PMDAREADY",
"PMDA is now responsive to requests" },
{ PM_ERR_TOOSMALL, "PM_ERR_TOOSMALL",
"Insufficient elements in list" },
{ PM_ERR_TOOBIG, "PM_ERR_TOOBIG",
"Result size exceeded" },
{ PM_ERR_FAULT, "PM_ERR_FAULT",
"QA fault injected" },
{ PM_ERR_THREAD, "PM_ERR_THREAD",
"Operation not supported for multi-threaded applications" },
/* insert new libpcp error codes here */
{ PM_ERR_NYI, "PM_ERR_NYI",
"Functionality not yet implemented" },
/* do not use values smaller than NYI */
{ 0, "",
"" }
};
#define BADCODE "No such PMAPI error code (%d)"
#ifndef IS_MINGW
/*
* handle non-determinism in the GNU implementation of strerror_r()
*/
static void
strerror_x(int code, char *buf, int buflen)
{
#ifdef HAVE_STRERROR_R_PTR
char *p;
p = strerror_r(code, buf, buflen);
if (p != buf)
strncpy(buf, p, buflen);
#else
/*
* the more normal POSIX and XSI compliant variants always fill buf[]
*/
strerror_r(code, buf, buflen);
#endif
}
#endif
char *
pmErrStr_r(int code, char *buf, int buflen)
{
int i;
#ifndef IS_MINGW
static int first = 1;
static char *unknown = NULL;
#else
static char unknown[] = "Unknown error";
#endif
if (code == 0) {
strncpy(buf, "No error", buflen);
return buf;
}
/*
* Is the code from a library wrapped by libpcp? (e.g. NSS/SSL/SASL)
* By good fortune, these libraries are using error codes that do not
* overlap - by design for NSS/SSL/NSPR, and by sheer luck with SASL.
*/
if (code < PM_ERR_NYI) {
#ifdef HAVE_SECURE_SOCKETS
#define DECODE_SECURE_SOCKETS_ERROR(c) ((c) - PM_ERR_NYI) /* negative */
#define DECODE_SASL_SPECIFIC_ERROR(c) ((c) < -1000 ? 0 : (c))
int error = DECODE_SECURE_SOCKETS_ERROR(code);
if (DECODE_SASL_SPECIFIC_ERROR(error))
snprintf(buf, buflen, "Authentication - %s", sasl_errstring(error, NULL, NULL));
else
strncpy(buf, PR_ErrorToString(error, PR_LANGUAGE_EN), buflen);
buf[buflen-1] = '\0';
return buf;
#endif
}
#ifndef IS_MINGW
if (first) {
/*
* reference message for an unrecognized error code.
* For IRIX, strerror() returns NULL in this case.
*/
strerror_x(-1, buf, buflen);
if (buf[0] != '\0') {
/*
* For Linux et al, strip the last word, expected to be the
* error number as in ...
* Unknown error -1
* or
* Unknown error 4294967295
*/
char *sp = strrchr(buf, ' ');
char *p;
if (sp != NULL) {
sp++;
if (*sp == '-') sp++;
for (p = sp; *p != '\0'; p++) {
if (!isdigit((int)*p)) break;
}
if (*p == '\0') {
PM_FAULT_POINT("libpcp/" __FILE__ ":1", PM_FAULT_ALLOC);
*sp = '\0';
if ((unknown = strdup(buf)) != NULL)
unknown[sp - buf] = '\0';
}
}
}
first = 0;
}
if (code < 0 && code > -PM_ERR_BASE) {
/* intro(2) / errno(3) errors, maybe */
strerror_x(-code, buf, buflen);
if (unknown == NULL) {
if (buf[0] != '\0')
return buf;
}
else {
/* The intention here is to catch variants of "Unknown
* error XXX" - in this case we're going to fail the
* stncmp() below, fall through and return a pcp error
* message, otherwise return the system error message
*/
if (strncmp(buf, unknown, strlen(unknown)) != 0)
return buf;
}
}
#else /* WIN32 */
if (code > -PM_ERR_BASE || code < -PM_ERR_NYI) {
const char *bp;
if ((bp = wsastrerror(-code)) != NULL)
strncpy(buf, bp, buflen);
else {
/* No strerror_r in MinGW, so need to lock */
char *tbp;
PM_LOCK(__pmLock_libpcp);
tbp = strerror(-code);
strncpy(buf, tbp, buflen);
PM_UNLOCK(__pmLock_libpcp);
}
if (strncmp(buf, unknown, strlen(unknown)) != 0)
return buf;
}
#endif
for (i = 0; errtab[i].err; i++) {
if (errtab[i].err == code) {
strncpy(buf, errtab[i].errmess, buflen);
return buf;
}
}
/* failure */
snprintf(buf, buflen, BADCODE, code);
return buf;
}
char *
pmErrStr(int code)
{
static char errmsg[PM_MAXERRMSGLEN];
pmErrStr_r(code, errmsg, sizeof(errmsg));
return errmsg;
}
void
__pmDumpErrTab(FILE *f)
{
int i;
fprintf(f, " Code Symbolic Name Message\n");
for (i = 0; errtab[i].err; i++)
fprintf(f, "%6d %-20s %s\n",
errtab[i].err, errtab[i].symb, errtab[i].errmess);
}
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