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1f05324cbe
haproxy/src/log.c
Willy Tarreau a0133fcf35 BUG/MINOR: log: fix risk of null deref on error path 
Previous commit ae32ac74db ("BUG/MINOR: log: fix memory leak on logsrv
parse error") addressed one issue and introduced another one, the logsrv
pointer may also be null at the end of the function so we must test it
before deciding to dereference it.

This should be backported along with the patch above to 2.2.
2020-10-27 10:35:32 +01:00

4022 lines
112 KiB
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/*
* General logging functions.
*
* Copyright 2000-2008 Willy Tarreau <w@1wt.eu>
*
* 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.
*
*/
#include <ctype.h>
#include <fcntl.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <time.h>
#include <unistd.h>
#include <errno.h>
#include <sys/time.h>
#include <sys/uio.h>
#include <haproxy/api.h>
#include <haproxy/applet-t.h>
#include <haproxy/cfgparse.h>
#include <haproxy/cli.h>
#include <haproxy/fd.h>
#include <haproxy/frontend.h>
#include <haproxy/global.h>
#include <haproxy/http.h>
#include <haproxy/listener.h>
#include <haproxy/log.h>
#include <haproxy/proxy.h>
#include <haproxy/ring.h>
#include <haproxy/sample.h>
#include <haproxy/sink.h>
#include <haproxy/ssl_sock.h>
#include <haproxy/stream.h>
#include <haproxy/stream_interface.h>
#include <haproxy/time.h>
#include <haproxy/tools.h>
#include <haproxy/version.h>
/* global recv logs counter */
int cum_log_messages;
/* log forward proxy list */
struct proxy *cfg_log_forward;
struct log_fmt_st {
char *name;
};
static const struct log_fmt_st log_formats[LOG_FORMATS] = {
[LOG_FORMAT_RFC3164] = {
.name = "rfc3164",
},
[LOG_FORMAT_RFC5424] = {
.name = "rfc5424",
},
[LOG_FORMAT_PRIO] = {
.name = "priority",
},
[LOG_FORMAT_SHORT] = {
.name = "short",
},
[LOG_FORMAT_TIMED] = {
.name = "timed",
},
[LOG_FORMAT_ISO] = {
.name = "iso",
},
[LOG_FORMAT_RAW] = {
.name = "raw",
},
};
/*
* This map is used with all the FD_* macros to check whether a particular bit
* is set or not. Each bit represents an ACSII code. ha_bit_set() sets those
* bytes which should be escaped. When ha_bit_test() returns non-zero, it means
* that the byte should be escaped. Be careful to always pass bytes from 0 to
* 255 exclusively to the macros.
*/
long rfc5424_escape_map[(256/8) / sizeof(long)];
long hdr_encode_map[(256/8) / sizeof(long)];
long url_encode_map[(256/8) / sizeof(long)];
long http_encode_map[(256/8) / sizeof(long)];
const char *log_facilities[NB_LOG_FACILITIES] = {
"kern", "user", "mail", "daemon",
"auth", "syslog", "lpr", "news",
"uucp", "cron", "auth2", "ftp",
"ntp", "audit", "alert", "cron2",
"local0", "local1", "local2", "local3",
"local4", "local5", "local6", "local7"
};
const char *log_levels[NB_LOG_LEVELS] = {
"emerg", "alert", "crit", "err",
"warning", "notice", "info", "debug"
};
const char sess_term_cond[16] = "-LcCsSPRIDKUIIII"; /* normal, Local, CliTo, CliErr, SrvTo, SrvErr, PxErr, Resource, Internal, Down, Killed, Up, -- */
const char sess_fin_state[8] = "-RCHDLQT"; /* cliRequest, srvConnect, srvHeader, Data, Last, Queue, Tarpit */
/* log_format */
struct logformat_type {
char *name;
int type;
int mode;
int lw; /* logwait bitsfield */
int (*config_callback)(struct logformat_node *node, struct proxy *curproxy);
const char *replace_by; /* new option to use instead of old one */
};
int prepare_addrsource(struct logformat_node *node, struct proxy *curproxy);
/* log_format variable names */
static const struct logformat_type logformat_keywords[] = {
{ "o", LOG_FMT_GLOBAL, PR_MODE_TCP, 0, NULL }, /* global option */
/* please keep these lines sorted ! */
{ "B", LOG_FMT_BYTES, PR_MODE_TCP, LW_BYTES, NULL }, /* bytes from server to client */
{ "CC", LOG_FMT_CCLIENT, PR_MODE_HTTP, LW_REQHDR, NULL }, /* client cookie */
{ "CS", LOG_FMT_CSERVER, PR_MODE_HTTP, LW_RSPHDR, NULL }, /* server cookie */
{ "H", LOG_FMT_HOSTNAME, PR_MODE_TCP, LW_INIT, NULL }, /* Hostname */
{ "ID", LOG_FMT_UNIQUEID, PR_MODE_TCP, LW_BYTES, NULL }, /* Unique ID */
{ "ST", LOG_FMT_STATUS, PR_MODE_TCP, LW_RESP, NULL }, /* status code */
{ "T", LOG_FMT_DATEGMT, PR_MODE_TCP, LW_INIT, NULL }, /* date GMT */
{ "Ta", LOG_FMT_Ta, PR_MODE_HTTP, LW_BYTES, NULL }, /* Time active (tr to end) */
{ "Tc", LOG_FMT_TC, PR_MODE_TCP, LW_BYTES, NULL }, /* Tc */
{ "Th", LOG_FMT_Th, PR_MODE_TCP, LW_BYTES, NULL }, /* Time handshake */
{ "Ti", LOG_FMT_Ti, PR_MODE_HTTP, LW_BYTES, NULL }, /* Time idle */
{ "Tl", LOG_FMT_DATELOCAL, PR_MODE_TCP, LW_INIT, NULL }, /* date local timezone */
{ "Tq", LOG_FMT_TQ, PR_MODE_HTTP, LW_BYTES, NULL }, /* Tq=Th+Ti+TR */
{ "Tr", LOG_FMT_Tr, PR_MODE_HTTP, LW_BYTES, NULL }, /* Tr */
{ "TR", LOG_FMT_TR, PR_MODE_HTTP, LW_BYTES, NULL }, /* Time to receive a valid request */
{ "Td", LOG_FMT_TD, PR_MODE_TCP, LW_BYTES, NULL }, /* Td = Tt - (Tq + Tw + Tc + Tr) */
{ "Ts", LOG_FMT_TS, PR_MODE_TCP, LW_INIT, NULL }, /* timestamp GMT */
{ "Tt", LOG_FMT_TT, PR_MODE_TCP, LW_BYTES, NULL }, /* Tt */
{ "Tu", LOG_FMT_TU, PR_MODE_TCP, LW_BYTES, NULL }, /* Tu = Tt -Ti */
{ "Tw", LOG_FMT_TW, PR_MODE_TCP, LW_BYTES, NULL }, /* Tw */
{ "U", LOG_FMT_BYTES_UP, PR_MODE_TCP, LW_BYTES, NULL }, /* bytes from client to server */
{ "ac", LOG_FMT_ACTCONN, PR_MODE_TCP, LW_BYTES, NULL }, /* actconn */
{ "b", LOG_FMT_BACKEND, PR_MODE_TCP, LW_INIT, NULL }, /* backend */
{ "bc", LOG_FMT_BECONN, PR_MODE_TCP, LW_BYTES, NULL }, /* beconn */
{ "bi", LOG_FMT_BACKENDIP, PR_MODE_TCP, LW_BCKIP, prepare_addrsource }, /* backend source ip */
{ "bp", LOG_FMT_BACKENDPORT, PR_MODE_TCP, LW_BCKIP, prepare_addrsource }, /* backend source port */
{ "bq", LOG_FMT_BCKQUEUE, PR_MODE_TCP, LW_BYTES, NULL }, /* backend_queue */
{ "ci", LOG_FMT_CLIENTIP, PR_MODE_TCP, LW_CLIP | LW_XPRT, NULL }, /* client ip */
{ "cp", LOG_FMT_CLIENTPORT, PR_MODE_TCP, LW_CLIP | LW_XPRT, NULL }, /* client port */
{ "f", LOG_FMT_FRONTEND, PR_MODE_TCP, LW_INIT, NULL }, /* frontend */
{ "fc", LOG_FMT_FECONN, PR_MODE_TCP, LW_BYTES, NULL }, /* feconn */
{ "fi", LOG_FMT_FRONTENDIP, PR_MODE_TCP, LW_FRTIP | LW_XPRT, NULL }, /* frontend ip */
{ "fp", LOG_FMT_FRONTENDPORT, PR_MODE_TCP, LW_FRTIP | LW_XPRT, NULL }, /* frontend port */
{ "ft", LOG_FMT_FRONTEND_XPRT, PR_MODE_TCP, LW_INIT, NULL }, /* frontend with transport mode */
{ "hr", LOG_FMT_HDRREQUEST, PR_MODE_TCP, LW_REQHDR, NULL }, /* header request */
{ "hrl", LOG_FMT_HDRREQUESTLIST, PR_MODE_TCP, LW_REQHDR, NULL }, /* header request list */
{ "hs", LOG_FMT_HDRRESPONS, PR_MODE_TCP, LW_RSPHDR, NULL }, /* header response */
{ "hsl", LOG_FMT_HDRRESPONSLIST, PR_MODE_TCP, LW_RSPHDR, NULL }, /* header response list */
{ "HM", LOG_FMT_HTTP_METHOD, PR_MODE_HTTP, LW_REQ, NULL }, /* HTTP method */
{ "HP", LOG_FMT_HTTP_PATH, PR_MODE_HTTP, LW_REQ, NULL }, /* HTTP path */
{ "HQ", LOG_FMT_HTTP_QUERY, PR_MODE_HTTP, LW_REQ, NULL }, /* HTTP query */
{ "HU", LOG_FMT_HTTP_URI, PR_MODE_HTTP, LW_REQ, NULL }, /* HTTP full URI */
{ "HV", LOG_FMT_HTTP_VERSION, PR_MODE_HTTP, LW_REQ, NULL }, /* HTTP version */
{ "lc", LOG_FMT_LOGCNT, PR_MODE_TCP, LW_INIT, NULL }, /* log counter */
{ "ms", LOG_FMT_MS, PR_MODE_TCP, LW_INIT, NULL }, /* accept date millisecond */
{ "pid", LOG_FMT_PID, PR_MODE_TCP, LW_INIT, NULL }, /* log pid */
{ "r", LOG_FMT_REQ, PR_MODE_HTTP, LW_REQ, NULL }, /* request */
{ "rc", LOG_FMT_RETRIES, PR_MODE_TCP, LW_BYTES, NULL }, /* retries */
{ "rt", LOG_FMT_COUNTER, PR_MODE_TCP, LW_REQ, NULL }, /* request counter (HTTP or TCP session) */
{ "s", LOG_FMT_SERVER, PR_MODE_TCP, LW_SVID, NULL }, /* server */
{ "sc", LOG_FMT_SRVCONN, PR_MODE_TCP, LW_BYTES, NULL }, /* srv_conn */
{ "si", LOG_FMT_SERVERIP, PR_MODE_TCP, LW_SVIP, NULL }, /* server destination ip */
{ "sp", LOG_FMT_SERVERPORT, PR_MODE_TCP, LW_SVIP, NULL }, /* server destination port */
{ "sq", LOG_FMT_SRVQUEUE, PR_MODE_TCP, LW_BYTES, NULL }, /* srv_queue */
{ "sslc", LOG_FMT_SSL_CIPHER, PR_MODE_TCP, LW_XPRT, NULL }, /* client-side SSL ciphers */
{ "sslv", LOG_FMT_SSL_VERSION, PR_MODE_TCP, LW_XPRT, NULL }, /* client-side SSL protocol version */
{ "t", LOG_FMT_DATE, PR_MODE_TCP, LW_INIT, NULL }, /* date */
{ "tr", LOG_FMT_tr, PR_MODE_HTTP, LW_INIT, NULL }, /* date of start of request */
{ "trg",LOG_FMT_trg, PR_MODE_HTTP, LW_INIT, NULL }, /* date of start of request, GMT */
{ "trl",LOG_FMT_trl, PR_MODE_HTTP, LW_INIT, NULL }, /* date of start of request, local */
{ "ts", LOG_FMT_TERMSTATE, PR_MODE_TCP, LW_BYTES, NULL },/* termination state */
{ "tsc", LOG_FMT_TERMSTATE_CK, PR_MODE_TCP, LW_INIT, NULL },/* termination state */
/* The following tags are deprecated and will be removed soon */
{ "Bi", LOG_FMT_BACKENDIP, PR_MODE_TCP, LW_BCKIP, prepare_addrsource, "bi" }, /* backend source ip */
{ "Bp", LOG_FMT_BACKENDPORT, PR_MODE_TCP, LW_BCKIP, prepare_addrsource, "bp" }, /* backend source port */
{ "Ci", LOG_FMT_CLIENTIP, PR_MODE_TCP, LW_CLIP | LW_XPRT, NULL, "ci" }, /* client ip */
{ "Cp", LOG_FMT_CLIENTPORT, PR_MODE_TCP, LW_CLIP | LW_XPRT, NULL, "cp" }, /* client port */
{ "Fi", LOG_FMT_FRONTENDIP, PR_MODE_TCP, LW_FRTIP | LW_XPRT, NULL, "fi" }, /* frontend ip */
{ "Fp", LOG_FMT_FRONTENDPORT, PR_MODE_TCP, LW_FRTIP | LW_XPRT, NULL, "fp" }, /* frontend port */
{ "Si", LOG_FMT_SERVERIP, PR_MODE_TCP, LW_SVIP, NULL, "si" }, /* server destination ip */
{ "Sp", LOG_FMT_SERVERPORT, PR_MODE_TCP, LW_SVIP, NULL, "sp" }, /* server destination port */
{ "cc", LOG_FMT_CCLIENT, PR_MODE_HTTP, LW_REQHDR, NULL, "CC" }, /* client cookie */
{ "cs", LOG_FMT_CSERVER, PR_MODE_HTTP, LW_RSPHDR, NULL, "CS" }, /* server cookie */
{ "st", LOG_FMT_STATUS, PR_MODE_HTTP, LW_RESP, NULL, "ST" }, /* status code */
{ 0, 0, 0, 0, NULL }
};
char default_http_log_format[] = "%ci:%cp [%tr] %ft %b/%s %TR/%Tw/%Tc/%Tr/%Ta %ST %B %CC %CS %tsc %ac/%fc/%bc/%sc/%rc %sq/%bq %hr %hs %{+Q}r"; // default format
char clf_http_log_format[] = "%{+Q}o %{-Q}ci - - [%trg] %r %ST %B \"\" \"\" %cp %ms %ft %b %s %TR %Tw %Tc %Tr %Ta %tsc %ac %fc %bc %sc %rc %sq %bq %CC %CS %hrl %hsl";
char default_tcp_log_format[] = "%ci:%cp [%t] %ft %b/%s %Tw/%Tc/%Tt %B %ts %ac/%fc/%bc/%sc/%rc %sq/%bq";
char *log_format = NULL;
/* Default string used for structured-data part in RFC5424 formatted
* syslog messages.
*/
char default_rfc5424_sd_log_format[] = "- ";
/* total number of dropped logs */
unsigned int dropped_logs = 0;
/* This is a global syslog message buffer, common to all outgoing
* messages. It contains only the data part.
*/
THREAD_LOCAL char *logline = NULL;
/* A global syslog message buffer, common to all RFC5424 syslog messages.
* Currently, it is used for generating the structured-data part.
*/
THREAD_LOCAL char *logline_rfc5424 = NULL;
/* A global buffer used to store all startup alerts/warnings. It will then be
* retrieve on the CLI. */
static struct ring *startup_logs = NULL;
struct logformat_var_args {
char *name;
int mask;
};
struct logformat_var_args var_args_list[] = {
// global
{ "M", LOG_OPT_MANDATORY },
{ "Q", LOG_OPT_QUOTE },
{ "X", LOG_OPT_HEXA },
{ "E", LOG_OPT_ESC },
{ 0, 0 }
};
/* return the name of the directive used in the current proxy for which we're
* currently parsing a header, when it is known.
*/
static inline const char *fmt_directive(const struct proxy *curproxy)
{
switch (curproxy->conf.args.ctx) {
case ARGC_ACL:
return "acl";
case ARGC_STK:
return "stick";
case ARGC_TRK:
return "track-sc";
case ARGC_LOG:
return "log-format";
case ARGC_LOGSD:
return "log-format-sd";
case ARGC_HRQ:
return "http-request";
case ARGC_HRS:
return "http-response";
case ARGC_UIF:
return "unique-id-format";
case ARGC_RDR:
return "redirect";
case ARGC_CAP:
return "capture";
case ARGC_SRV:
return "server";
case ARGC_SPOE:
return "spoe-message";
case ARGC_UBK:
return "use_backend";
case ARGC_HERR:
return "http-error";
default:
return "undefined(please report this bug)"; /* must never happen */
}
}
/*
* callback used to configure addr source retrieval
*/
int prepare_addrsource(struct logformat_node *node, struct proxy *curproxy)
{
curproxy->options2 |= PR_O2_SRC_ADDR;
return 0;
}
/*
* Parse args in a logformat_var. Returns 0 in error
* case, otherwise, it returns 1.
*/
int parse_logformat_var_args(char *args, struct logformat_node *node, char **err)
{
int i = 0;
int end = 0;
int flags = 0; // 1 = + 2 = -
char *sp = NULL; // start pointer
if (args == NULL) {
memprintf(err, "internal error: parse_logformat_var_args() expects non null 'args'");
return 0;
}
while (1) {
if (*args == '\0')
end = 1;
if (*args == '+') {
// add flag
sp = args + 1;
flags = 1;
}
if (*args == '-') {
// delete flag
sp = args + 1;
flags = 2;
}
if (*args == '\0' || *args == ',') {
*args = '\0';
for (i = 0; sp && var_args_list[i].name; i++) {
if (strcmp(sp, var_args_list[i].name) == 0) {
if (flags == 1) {
node->options |= var_args_list[i].mask;
break;
} else if (flags == 2) {
node->options &= ~var_args_list[i].mask;
break;
}
}
}
sp = NULL;
if (end)
break;
}
args++;
}
return 1;
}
/*
* Parse a variable '%varname' or '%{args}varname' in log-format. The caller
* must pass the args part in the <arg> pointer with its length in <arg_len>,
* and varname with its length in <var> and <var_len> respectively. <arg> is
* ignored when arg_len is 0. Neither <var> nor <var_len> may be null.
* Returns false in error case and err is filled, otherwise returns true.
*/
int parse_logformat_var(char *arg, int arg_len, char *var, int var_len, struct proxy *curproxy, struct list *list_format, int *defoptions, char **err)
{
int j;
struct logformat_node *node = NULL;
for (j = 0; logformat_keywords[j].name; j++) { // search a log type
if (strlen(logformat_keywords[j].name) == var_len &&
strncmp(var, logformat_keywords[j].name, var_len) == 0) {
if (logformat_keywords[j].mode != PR_MODE_HTTP || curproxy->mode == PR_MODE_HTTP) {
node = calloc(1, sizeof(*node));
if (!node) {
memprintf(err, "out of memory error");
goto error_free;
}
node->type = logformat_keywords[j].type;
node->options = *defoptions;
if (arg_len) {
node->arg = my_strndup(arg, arg_len);
if (!parse_logformat_var_args(node->arg, node, err))
goto error_free;
}
if (node->type == LOG_FMT_GLOBAL) {
*defoptions = node->options;
free(node->arg);
free(node);
} else {
if (logformat_keywords[j].config_callback &&
logformat_keywords[j].config_callback(node, curproxy) != 0) {
goto error_free;
}
curproxy->to_log |= logformat_keywords[j].lw;
LIST_ADDQ(list_format, &node->list);
}
if (logformat_keywords[j].replace_by)
ha_warning("parsing [%s:%d] : deprecated variable '%s' in '%s', please replace it with '%s'.\n",
curproxy->conf.args.file, curproxy->conf.args.line,
logformat_keywords[j].name, fmt_directive(curproxy), logformat_keywords[j].replace_by);
return 1;
} else {
memprintf(err, "format variable '%s' is reserved for HTTP mode",
logformat_keywords[j].name);
goto error_free;
}
}
}
j = var[var_len];
var[var_len] = 0;
memprintf(err, "no such format variable '%s'. If you wanted to emit the '%%' character verbatim, you need to use '%%%%'", var);
var[var_len] = j;
error_free:
if (node) {
free(node->arg);
free(node);
}
return 0;
}
/*
* push to the logformat linked list
*
* start: start pointer
* end: end text pointer
* type: string type
* list_format: destination list
*
* LOG_TEXT: copy chars from start to end excluding end.
*
*/
int add_to_logformat_list(char *start, char *end, int type, struct list *list_format, char **err)
{
char *str;
if (type == LF_TEXT) { /* type text */
struct logformat_node *node = calloc(1, sizeof(*node));
if (!node) {
memprintf(err, "out of memory error");
return 0;
}
str = calloc(1, end - start + 1);
strncpy(str, start, end - start);
str[end - start] = '\0';
node->arg = str;
node->type = LOG_FMT_TEXT; // type string
LIST_ADDQ(list_format, &node->list);
} else if (type == LF_SEPARATOR) {
struct logformat_node *node = calloc(1, sizeof(*node));
if (!node) {
memprintf(err, "out of memory error");
return 0;
}
node->type = LOG_FMT_SEPARATOR;
LIST_ADDQ(list_format, &node->list);
}
return 1;
}
/*
* Parse the sample fetch expression <text> and add a node to <list_format> upon
* success. At the moment, sample converters are not yet supported but fetch arguments
* should work. The curpx->conf.args.ctx must be set by the caller. If an end pointer
* is passed in <endptr>, it will be updated with the pointer to the first character
* not part of the sample expression.
*
* In error case, the function returns 0, otherwise it returns 1.
*/
int add_sample_to_logformat_list(char *text, char *arg, int arg_len, struct proxy *curpx, struct list *list_format, int options, int cap, char **err, char **endptr)
{
char *cmd[2];
struct sample_expr *expr = NULL;
struct logformat_node *node = NULL;
int cmd_arg;
cmd[0] = text;
cmd[1] = "";
cmd_arg = 0;
expr = sample_parse_expr(cmd, &cmd_arg, curpx->conf.args.file, curpx->conf.args.line, err, &curpx->conf.args, endptr);
if (!expr) {
memprintf(err, "failed to parse sample expression <%s> : %s", text, *err);
goto error_free;
}
node = calloc(1, sizeof(*node));
if (!node) {
memprintf(err, "out of memory error");
goto error_free;
}
node->type = LOG_FMT_EXPR;
node->expr = expr;
node->options = options;
if (arg_len) {
node->arg = my_strndup(arg, arg_len);
if (!parse_logformat_var_args(node->arg, node, err))
goto error_free;
}
if (expr->fetch->val & cap & SMP_VAL_REQUEST)
node->options |= LOG_OPT_REQ_CAP; /* fetch method is request-compatible */
if (expr->fetch->val & cap & SMP_VAL_RESPONSE)
node->options |= LOG_OPT_RES_CAP; /* fetch method is response-compatible */
if (!(expr->fetch->val & cap)) {
memprintf(err, "sample fetch <%s> may not be reliably used here because it needs '%s' which is not available here",
text, sample_src_names(expr->fetch->use));
goto error_free;
}
/* check if we need to allocate an http_txn struct for HTTP parsing */
/* Note, we may also need to set curpx->to_log with certain fetches */
curpx->http_needed |= !!(expr->fetch->use & SMP_USE_HTTP_ANY);
/* FIXME: temporary workaround for missing LW_XPRT and LW_REQ flags
* needed with some sample fetches (eg: ssl*). We always set it for
* now on, but this will leave with sample capabilities soon.
*/
curpx->to_log |= LW_XPRT;
if (curpx->http_needed)
curpx->to_log |= LW_REQ;
LIST_ADDQ(list_format, &node->list);
return 1;
error_free:
release_sample_expr(expr);
if (node) {
free(node->arg);
free(node);
}
return 0;
}
/*
* Parse the log_format string and fill a linked list.
* Variable name are preceded by % and composed by characters [a-zA-Z0-9]* : %varname
* You can set arguments using { } : %{many arguments}varname.
* The curproxy->conf.args.ctx must be set by the caller.
*
* fmt: the string to parse
* curproxy: the proxy affected
* list_format: the destination list
* options: LOG_OPT_* to force on every node
* cap: all SMP_VAL_* flags supported by the consumer
*
* The function returns 1 in success case, otherwise, it returns 0 and err is filled.
*/
int parse_logformat_string(const char *fmt, struct proxy *curproxy, struct list *list_format, int options, int cap, char **err)
{
char *sp, *str, *backfmt; /* start pointer for text parts */
char *arg = NULL; /* start pointer for args */
char *var = NULL; /* start pointer for vars */
int arg_len = 0;
int var_len = 0;
int cformat; /* current token format */
int pformat; /* previous token format */
struct logformat_node *tmplf, *back;
sp = str = backfmt = strdup(fmt);
if (!str) {
memprintf(err, "out of memory error");
return 0;
}
curproxy->to_log |= LW_INIT;
/* flush the list first. */
list_for_each_entry_safe(tmplf, back, list_format, list) {
LIST_DEL(&tmplf->list);
release_sample_expr(tmplf->expr);
free(tmplf->arg);
free(tmplf);
}
for (cformat = LF_INIT; cformat != LF_END; str++) {
pformat = cformat;
if (!*str)
cformat = LF_END; // preset it to save all states from doing this
/* The principle of the two-step state machine below is to first detect a change, and
* second have all common paths processed at one place. The common paths are the ones
* encountered in text areas (LF_INIT, LF_TEXT, LF_SEPARATOR) and at the end (LF_END).
* We use the common LF_INIT state to dispatch to the different final states.
*/
switch (pformat) {
case LF_STARTVAR: // text immediately following a '%'
arg = NULL; var = NULL;
arg_len = var_len = 0;
if (*str == '{') { // optional argument
cformat = LF_STARG;
arg = str + 1;
}
else if (*str == '[') {
cformat = LF_STEXPR;
var = str + 1; // store expr in variable name
}
else if (isalpha((unsigned char)*str)) { // variable name
cformat = LF_VAR;
var = str;
}
else if (*str == '%')
cformat = LF_TEXT; // convert this character to a literal (useful for '%')
else if (isdigit((unsigned char)*str) || *str == ' ' || *str == '\t') {
/* single '%' followed by blank or digit, send them both */
cformat = LF_TEXT;
pformat = LF_TEXT; /* finally we include the previous char as well */
sp = str - 1; /* send both the '%' and the current char */
memprintf(err, "unexpected variable name near '%c' at position %d line : '%s'. Maybe you want to write a single '%%', use the syntax '%%%%'",
*str, (int)(str - backfmt), fmt);
goto fail;
}
else
cformat = LF_INIT; // handle other cases of literals
break;
case LF_STARG: // text immediately following '%{'
if (*str == '}') { // end of arg
cformat = LF_EDARG;
arg_len = str - arg;
*str = 0; // used for reporting errors
}
break;
case LF_EDARG: // text immediately following '%{arg}'
if (*str == '[') {
cformat = LF_STEXPR;
var = str + 1; // store expr in variable name
break;
}
else if (isalnum((unsigned char)*str)) { // variable name
cformat = LF_VAR;
var = str;
break;
}
memprintf(err, "parse argument modifier without variable name near '%%{%s}'", arg);
goto fail;
case LF_STEXPR: // text immediately following '%['
/* the whole sample expression is parsed at once,
* returning the pointer to the first character not
* part of the expression, which MUST be the trailing
* angle bracket.
*/
if (!add_sample_to_logformat_list(var, arg, arg_len, curproxy, list_format, options, cap, err, &str))
goto fail;
if (*str == ']') {
// end of arg, go on with next state
cformat = pformat = LF_EDEXPR;
sp = str;
}
else {
char c = *str;
*str = 0;
if (isprint((unsigned char)c))
memprintf(err, "expected ']' after '%s', but found '%c'", var, c);
else
memprintf(err, "missing ']' after '%s'", var);
goto fail;
}
break;
case LF_VAR: // text part of a variable name
var_len = str - var;
if (!isalnum((unsigned char)*str))
cformat = LF_INIT; // not variable name anymore
break;
default: // LF_INIT, LF_TEXT, LF_SEPARATOR, LF_END, LF_EDEXPR
cformat = LF_INIT;
}
if (cformat == LF_INIT) { /* resynchronize state to text/sep/startvar */
switch (*str) {
case '%': cformat = LF_STARTVAR; break;
case 0 : cformat = LF_END; break;
case ' ':
if (options & LOG_OPT_MERGE_SPACES) {
cformat = LF_SEPARATOR;
break;
}
/* fall through */
default : cformat = LF_TEXT; break;
}
}
if (cformat != pformat || pformat == LF_SEPARATOR) {
switch (pformat) {
case LF_VAR:
if (!parse_logformat_var(arg, arg_len, var, var_len, curproxy, list_format, &options, err))
goto fail;
break;
case LF_TEXT:
case LF_SEPARATOR:
if (!add_to_logformat_list(sp, str, pformat, list_format, err))
goto fail;
break;
}
sp = str; /* new start of text at every state switch and at every separator */
}
}
if (pformat == LF_STARTVAR || pformat == LF_STARG || pformat == LF_STEXPR) {
memprintf(err, "truncated line after '%s'", var ? var : arg ? arg : "%");
goto fail;
}
free(backfmt);
return 1;
fail:
free(backfmt);
return 0;
}
/*
* Parse the first range of indexes from a string made of a list of comma separated
* ranges of indexes. Note that an index may be considered as a particular range
* with a high limit to the low limit.
*/
int get_logsrv_smp_range(unsigned int *low, unsigned int *high, char **arg, char **err)
{
char *end, *p;
*low = *high = 0;
p = *arg;
end = strchr(p, ',');
if (!end)
end = p + strlen(p);
*high = *low = read_uint((const char **)&p, end);
if (!*low || (p != end && *p != '-'))
goto err;
if (p == end)
goto done;
p++;
*high = read_uint((const char **)&p, end);
if (!*high || *high <= *low || p != end)
goto err;
done:
if (*end == ',')
end++;
*arg = end;
return 1;
err:
memprintf(err, "wrong sample range '%s'", *arg);
return 0;
}
/*
* Returns 1 if the range defined by <low> and <high> overlaps
* one of them in <rgs> array of ranges with <sz> the size of this
* array, 0 if not.
*/
int smp_log_ranges_overlap(struct smp_log_range *rgs, size_t sz,
unsigned int low, unsigned int high, char **err)
{
size_t i;
for (i = 0; i < sz; i++) {
if ((low >= rgs[i].low && low <= rgs[i].high) ||
(high >= rgs[i].low && high <= rgs[i].high)) {
memprintf(err, "ranges are overlapping");
return 1;
}
}
return 0;
}
int smp_log_range_cmp(const void *a, const void *b)
{
const struct smp_log_range *rg_a = a;
const struct smp_log_range *rg_b = b;
if (rg_a->high < rg_b->low)
return -1;
else if (rg_a->low > rg_b->high)
return 1;
return 0;
}
/*
* Parse "log" keyword and update <logsrvs> list accordingly.
*
* When <do_del> is set, it means the "no log" line was parsed, so all log
* servers in <logsrvs> are released.
*
* Otherwise, we try to parse the "log" line. First of all, when the list is not
* the global one, we look for the parameter "global". If we find it,
* global.logsrvs is copied. Else we parse each arguments.
*
* The function returns 1 in success case, otherwise, it returns 0 and err is
* filled.
*/
int parse_logsrv(char **args, struct list *logsrvs, int do_del, char **err)
{
struct smp_log_range *smp_rgs = NULL;
struct sockaddr_storage *sk;
struct logsrv *logsrv = NULL;
int port1, port2;
int cur_arg;
int fd;
/*
* "no log": delete previous herited or defined syslog
* servers.
*/
if (do_del) {
struct logsrv *back;
if (*(args[1]) != 0) {
memprintf(err, "'no log' does not expect arguments");
goto error;
}
list_for_each_entry_safe(logsrv, back, logsrvs, list) {
LIST_DEL(&logsrv->list);
free(logsrv);
}
return 1;
}
/*
* "log global": copy global.logrsvs linked list to the end of logsrvs
* list. But first, we check (logsrvs != global.logsrvs).
*/
if (*(args[1]) && *(args[2]) == 0 && !strcmp(args[1], "global")) {
if (logsrvs == &global.logsrvs) {
memprintf(err, "'global' is not supported for a global syslog server");
goto error;
}
list_for_each_entry(logsrv, &global.logsrvs, list) {
struct logsrv *node;
list_for_each_entry(node, logsrvs, list) {
if (node->ref == logsrv)
goto skip_logsrv;
}
node = malloc(sizeof(*node));
memcpy(node, logsrv, sizeof(struct logsrv));
node->ref = logsrv;
LIST_INIT(&node->list);
LIST_ADDQ(logsrvs, &node->list);
skip_logsrv:
continue;
}
return 1;
}
/*
* "log <address> ...: parse a syslog server line
*/
if (*(args[1]) == 0 || *(args[2]) == 0) {
memprintf(err, "expects <address> and <facility> %s as arguments",
((logsrvs == &global.logsrvs) ? "" : "or global"));
goto error;
}
/* take care of "stdout" and "stderr" as regular aliases for fd@1 / fd@2 */
if (strcmp(args[1], "stdout") == 0)
args[1] = "fd@1";
else if (strcmp(args[1], "stderr") == 0)
args[1] = "fd@2";
logsrv = calloc(1, sizeof(*logsrv));
if (!logsrv) {
memprintf(err, "out of memory");
goto error;
}
/* skip address for now, it will be parsed at the end */
cur_arg = 2;
/* just after the address, a length may be specified */
logsrv->maxlen = MAX_SYSLOG_LEN;
if (strcmp(args[cur_arg], "len") == 0) {
int len = atoi(args[cur_arg+1]);
if (len < 80 || len > 65535) {
memprintf(err, "invalid log length '%s', must be between 80 and 65535",
args[cur_arg+1]);
goto error;
}
logsrv->maxlen = len;
cur_arg += 2;
}
if (logsrv->maxlen > global.max_syslog_len)
global.max_syslog_len = logsrv->maxlen;
/* after the length, a format may be specified */
if (strcmp(args[cur_arg], "format") == 0) {
logsrv->format = get_log_format(args[cur_arg+1]);
if (logsrv->format == LOG_FORMAT_UNSPEC) {
memprintf(err, "unknown log format '%s'", args[cur_arg+1]);
goto error;
}
cur_arg += 2;
}
if (strcmp(args[cur_arg], "sample") == 0) {
unsigned low, high;
char *p, *beg, *end, *smp_sz_str;
size_t smp_rgs_sz = 0, smp_sz = 0, new_smp_sz;
p = args[cur_arg+1];
smp_sz_str = strchr(p, ':');
if (!smp_sz_str) {
memprintf(err, "Missing sample size");
goto error;
}
*smp_sz_str++ = '\0';
end = p + strlen(p);
while (p != end) {
if (!get_logsrv_smp_range(&low, &high, &p, err))
goto error;
if (smp_rgs && smp_log_ranges_overlap(smp_rgs, smp_rgs_sz, low, high, err))
goto error;
smp_rgs = my_realloc2(smp_rgs, (smp_rgs_sz + 1) * sizeof *smp_rgs);
if (!smp_rgs) {
memprintf(err, "out of memory error");
goto error;
}
smp_rgs[smp_rgs_sz].low = low;
smp_rgs[smp_rgs_sz].high = high;
smp_rgs[smp_rgs_sz].sz = high - low + 1;
smp_rgs[smp_rgs_sz].curr_idx = 0;
if (smp_rgs[smp_rgs_sz].high > smp_sz)
smp_sz = smp_rgs[smp_rgs_sz].high;
smp_rgs_sz++;
}
if (smp_rgs == NULL) {
memprintf(err, "no sampling ranges given");
goto error;
}
beg = smp_sz_str;
end = beg + strlen(beg);
new_smp_sz = read_uint((const char **)&beg, end);
if (!new_smp_sz || beg != end) {
memprintf(err, "wrong sample size '%s' for sample range '%s'",
smp_sz_str, args[cur_arg+1]);
goto error;
}
if (new_smp_sz < smp_sz) {
memprintf(err, "sample size %zu should be greater or equal to "
"%zu the maximum of the high ranges limits",
new_smp_sz, smp_sz);
goto error;
}
smp_sz = new_smp_sz;
/* Let's order <smp_rgs> array. */
qsort(smp_rgs, smp_rgs_sz, sizeof(struct smp_log_range), smp_log_range_cmp);
logsrv->lb.smp_rgs = smp_rgs;
logsrv->lb.smp_rgs_sz = smp_rgs_sz;
logsrv->lb.smp_sz = smp_sz;
cur_arg += 2;
}
HA_SPIN_INIT(&logsrv->lock);
/* parse the facility */
logsrv->facility = get_log_facility(args[cur_arg]);
if (logsrv->facility < 0) {
memprintf(err, "unknown log facility '%s'", args[cur_arg]);
goto error;
}
cur_arg++;
/* parse the max syslog level (default: debug) */
logsrv->level = 7;
if (*(args[cur_arg])) {
logsrv->level = get_log_level(args[cur_arg]);
if (logsrv->level < 0) {
memprintf(err, "unknown optional log level '%s'", args[cur_arg]);
goto error;
}
cur_arg++;
}
/* parse the limit syslog level (default: emerg) */
logsrv->minlvl = 0;
if (*(args[cur_arg])) {
logsrv->minlvl = get_log_level(args[cur_arg]);
if (logsrv->minlvl < 0) {
memprintf(err, "unknown optional minimum log level '%s'", args[cur_arg]);
goto error;
}
cur_arg++;
}
/* Too many args */
if (*(args[cur_arg])) {
memprintf(err, "cannot handle unexpected argument '%s'", args[cur_arg]);
goto error;
}
/* now, back to the address */
logsrv->type = LOG_TARGET_DGRAM;
if (strncmp(args[1], "ring@", 5) == 0) {
logsrv->addr.ss_family = AF_UNSPEC;
logsrv->type = LOG_TARGET_BUFFER;
logsrv->sink = NULL;
logsrv->ring_name = strdup(args[1] + 5);
goto done;
}
sk = str2sa_range(args[1], NULL, &port1, &port2, &fd, NULL,
err, NULL, NULL, PA_O_RESOLVE | PA_O_PORT_OK | PA_O_RAW_FD | PA_O_DGRAM);
if (!sk)
goto error;
if (fd != -1)
logsrv->type = LOG_TARGET_FD;
logsrv->addr = *sk;
if (sk->ss_family == AF_INET || sk->ss_family == AF_INET6) {
logsrv->addr = *sk;
if (!port1)
set_host_port(&logsrv->addr, SYSLOG_PORT);
}
done:
LIST_ADDQ(logsrvs, &logsrv->list);
return 1;
error:
free(smp_rgs);
if (logsrv)
free(logsrv->ring_name);
free(logsrv);
return 0;
}
/* Generic function to display messages prefixed by a label */
static void print_message(const char *label, const char *fmt, va_list argp)
{
struct tm tm;
char *head, *msg;
head = msg = NULL;
get_localtime(date.tv_sec, &tm);
memprintf(&head, "[%s] %03d/%02d%02d%02d (%d) : ",
label, tm.tm_yday, tm.tm_hour, tm.tm_min, tm.tm_sec, (int)getpid());
memvprintf(&msg, fmt, argp);
if (global.mode & MODE_STARTING) {
if (unlikely(!startup_logs))
startup_logs = ring_new(STARTUP_LOG_SIZE);
if (likely(startup_logs)) {
struct ist m[2];
m[0] = ist(head);
m[1] = ist(msg);
/* trim the trailing '\n' */
if (m[1].len > 0 && m[1].ptr[m[1].len - 1] == '\n')
m[1].len--;
ring_write(startup_logs, ~0, 0, 0, m, 2);
}
}
fprintf(stderr, "%s%s", head, msg);
fflush(stderr);
free(head);
free(msg);
}
/*
* Displays the message on stderr with the date and pid. Overrides the quiet
* mode during startup.
*/
void ha_alert(const char *fmt, ...)
{
va_list argp;
if (!(global.mode & MODE_QUIET) || (global.mode & (MODE_VERBOSE | MODE_STARTING))) {
if (!(warned & WARN_EXEC_PATH)) {
const char *path = get_exec_path();
warned |= WARN_EXEC_PATH;
ha_notice("haproxy version is %s\n", haproxy_version);
if (path)
ha_notice("path to executable is %s\n", path);
}
va_start(argp, fmt);
print_message("ALERT", fmt, argp);
va_end(argp);
}
}
/*
* Displays the message on stderr with the date and pid.
*/
void ha_warning(const char *fmt, ...)
{
va_list argp;
warned |= WARN_ANY;
if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) {
va_start(argp, fmt);
print_message("WARNING", fmt, argp);
va_end(argp);
}
}
/*
* Displays the message on stderr with the date and pid.
*/
void ha_notice(const char *fmt, ...)
{
va_list argp;
if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) {
va_start(argp, fmt);
print_message("NOTICE", fmt, argp);
va_end(argp);
}
}
/*
* Displays the message on <out> only if quiet mode is not set.
*/
void qfprintf(FILE *out, const char *fmt, ...)
{
va_list argp;
if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) {
va_start(argp, fmt);
vfprintf(out, fmt, argp);
fflush(out);
va_end(argp);
}
}
/*
* returns log format, LOG_FORMAT_UNSPEC is return if not found.
*/
enum log_fmt get_log_format(const char *fmt)
{
enum log_fmt format;
format = LOG_FORMATS - 1;
while (format > 0 && log_formats[format].name
&& strcmp(log_formats[format].name, fmt))
format--;
/* Note: 0 is LOG_FORMAT_UNSPEC */
return format;
}
/*
* returns log level for <lev> or -1 if not found.
*/
int get_log_level(const char *lev)
{
int level;
level = NB_LOG_LEVELS - 1;
while (level >= 0 && strcmp(log_levels[level], lev))
level--;
return level;
}
/*
* returns log facility for <fac> or -1 if not found.
*/
int get_log_facility(const char *fac)
{
int facility;
facility = NB_LOG_FACILITIES - 1;
while (facility >= 0 && strcmp(log_facilities[facility], fac))
facility--;
return facility;
}
/*
* Encode the string.
*
* When using the +E log format option, it will try to escape '"\]'
* characters with '\' as prefix. The same prefix should not be used as
* <escape>.
*/
static char *lf_encode_string(char *start, char *stop,
const char escape, const long *map,
const char *string,
struct logformat_node *node)
{
if (node->options & LOG_OPT_ESC) {
if (start < stop) {
stop--; /* reserve one byte for the final '\0' */
while (start < stop && *string != '\0') {
if (!ha_bit_test((unsigned char)(*string), map)) {
if (!ha_bit_test((unsigned char)(*string), rfc5424_escape_map))
*start++ = *string;
else {
if (start + 2 >= stop)
break;
*start++ = '\\';
*start++ = *string;
}
}
else {
if (start + 3 >= stop)
break;
*start++ = escape;
*start++ = hextab[(*string >> 4) & 15];
*start++ = hextab[*string & 15];
}
string++;
}
*start = '\0';
}
}
else {
return encode_string(start, stop, escape, map, string);
}
return start;
}
/*
* Encode the chunk.
*
* When using the +E log format option, it will try to escape '"\]'
* characters with '\' as prefix. The same prefix should not be used as
* <escape>.
*/
static char *lf_encode_chunk(char *start, char *stop,
const char escape, const long *map,
const struct buffer *chunk,
struct logformat_node *node)
{
char *str, *end;
if (node->options & LOG_OPT_ESC) {
if (start < stop) {
str = chunk->area;
end = chunk->area + chunk->data;
stop--; /* reserve one byte for the final '\0' */
while (start < stop && str < end) {
if (!ha_bit_test((unsigned char)(*str), map)) {
if (!ha_bit_test((unsigned char)(*str), rfc5424_escape_map))
*start++ = *str;
else {
if (start + 2 >= stop)
break;
*start++ = '\\';
*start++ = *str;
}
}
else {
if (start + 3 >= stop)
break;
*start++ = escape;
*start++ = hextab[(*str >> 4) & 15];
*start++ = hextab[*str & 15];
}
str++;
}
*start = '\0';
}
}
else {
return encode_chunk(start, stop, escape, map, chunk);
}
return start;
}
/*
* Write a string in the log string
* Take cares of quote and escape options
*
* Return the address of the \0 character, or NULL on error
*/
char *lf_text_len(char *dst, const char *src, size_t len, size_t size, const struct logformat_node *node)
{
if (size < 2)
return NULL;
if (node->options & LOG_OPT_QUOTE) {
*(dst++) = '"';
size--;
}
if (src && len) {
if (++len > size)
len = size;
if (node->options & LOG_OPT_ESC) {
char *ret;
ret = escape_string(dst, dst + len, '\\', rfc5424_escape_map, src);
if (ret == NULL || *ret != '\0')
return NULL;
len = ret - dst;
}
else {
len = strlcpy2(dst, src, len);
}
size -= len;
dst += len;
}
else if ((node->options & (LOG_OPT_QUOTE|LOG_OPT_MANDATORY)) == LOG_OPT_MANDATORY) {
if (size < 2)
return NULL;
*(dst++) = '-';
}
if (node->options & LOG_OPT_QUOTE) {
if (size < 2)
return NULL;
*(dst++) = '"';
}
*dst = '\0';
return dst;
}
static inline char *lf_text(char *dst, const char *src, size_t size, const struct logformat_node *node)
{
return lf_text_len(dst, src, size, size, node);
}
/*
* Write a IP address to the log string
* +X option write in hexadecimal notation, most significant byte on the left
*/
char *lf_ip(char *dst, const struct sockaddr *sockaddr, size_t size, const struct logformat_node *node)
{
char *ret = dst;
int iret;
char pn[INET6_ADDRSTRLEN];
if (node->options & LOG_OPT_HEXA) {
unsigned char *addr = NULL;
switch (sockaddr->sa_family) {
case AF_INET:
addr = (unsigned char *)&((struct sockaddr_in *)sockaddr)->sin_addr.s_addr;
iret = snprintf(dst, size, "%02X%02X%02X%02X", addr[0], addr[1], addr[2], addr[3]);
break;
case AF_INET6:
addr = (unsigned char *)&((struct sockaddr_in6 *)sockaddr)->sin6_addr.s6_addr;
iret = snprintf(dst, size, "%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X",
addr[0], addr[1], addr[2], addr[3], addr[4], addr[5], addr[6], addr[7],
addr[8], addr[9], addr[10], addr[11], addr[12], addr[13], addr[14], addr[15]);
break;
default:
return NULL;
}
if (iret < 0 || iret > size)
return NULL;
ret += iret;
} else {
addr_to_str((struct sockaddr_storage *)sockaddr, pn, sizeof(pn));
ret = lf_text(dst, pn, size, node);
if (ret == NULL)
return NULL;
}
return ret;
}
/*
* Write a port to the log
* +X option write in hexadecimal notation, most significant byte on the left
*/
char *lf_port(char *dst, const struct sockaddr *sockaddr, size_t size, const struct logformat_node *node)
{
char *ret = dst;
int iret;
if (node->options & LOG_OPT_HEXA) {
const unsigned char *port = (const unsigned char *)&((struct sockaddr_in *)sockaddr)->sin_port;
iret = snprintf(dst, size, "%02X%02X", port[0], port[1]);
if (iret < 0 || iret > size)
return NULL;
ret += iret;
} else {
ret = ltoa_o(get_host_port((struct sockaddr_storage *)sockaddr), dst, size);
if (ret == NULL)
return NULL;
}
return ret;
}
/*
* This function sends the syslog message using a printf format string. It
* expects an LF-terminated message.
*/
void send_log(struct proxy *p, int level, const char *format, ...)
{
va_list argp;
int data_len;
if (level < 0 || format == NULL || logline == NULL)
return;
va_start(argp, format);
data_len = vsnprintf(logline, global.max_syslog_len, format, argp);
if (data_len < 0 || data_len > global.max_syslog_len)
data_len = global.max_syslog_len;
va_end(argp);
__send_log((p ? &p->logsrvs : NULL), (p ? &p->log_tag : NULL), level,
logline, data_len, default_rfc5424_sd_log_format, 2);
}
/*
* This function builds a log header of given format using given
* metadata, if format is set to LOF_FORMAT_UNSPEC, it tries
* to determine format based on given metadas. It is useful
* for log-forwarding to be able to forward any format without
* settings.
* This function returns a struct ist array of elements of the header
* nbelem is set to the number of available elements.
* This function returns currently a maximum of NB_LOG_HDR_IST_ELEMENTS
* elements.
*/
struct ist *build_log_header(enum log_fmt format, int level, int facility,
struct ist *metadata, size_t *nbelem)
{
static THREAD_LOCAL struct {
struct ist ist_vector[NB_LOG_HDR_MAX_ELEMENTS];
char timestamp_buffer[LOG_LEGACYTIME_LEN+1+1];
time_t cur_legacy_time;
char priority_buffer[6];
} hdr_ctx = { .priority_buffer = "<<<<>" };
struct tm logtime;
int len;
int fac_level = 0;
time_t time = date.tv_sec;
*nbelem = 0;
if (format == LOG_FORMAT_UNSPEC) {
format = LOG_FORMAT_RAW;
if (metadata) {
/* If a hostname is set, it appears we want to perform syslog
* because only rfc5427 or rfc3164 support an hostname.
*/
if (metadata[LOG_META_HOST].len) {
/* If a rfc5424 compliant timestamp is used we consider
* that output format is rfc5424, else legacy format
* is used as specified default for local logs
* in documentation.
*/
if ((metadata[LOG_META_TIME].len == 1 && metadata[LOG_META_TIME].ptr[0] == '-')
|| (metadata[LOG_META_TIME].len >= LOG_ISOTIME_MINLEN))
format = LOG_FORMAT_RFC5424;
else
format = LOG_FORMAT_RFC3164;
}
else if (metadata[LOG_META_PRIO].len) {
/* the source seems a parsed message
* offering a valid level/prio prefix
* so we consider this format.
*/
format = LOG_FORMAT_PRIO;
}
}
}
/* prepare priority, stored into 1 single elem */
switch (format) {
case LOG_FORMAT_RFC3164:
case LOG_FORMAT_RFC5424:
case LOG_FORMAT_PRIO:
fac_level = facility << 3;
/* further format ignore the facility */
/* fall through */
case LOG_FORMAT_TIMED:
case LOG_FORMAT_SHORT:
fac_level += level;
hdr_ctx.ist_vector[*nbelem].ptr = &hdr_ctx.priority_buffer[3]; /* last digit of the log level */
do {
*hdr_ctx.ist_vector[*nbelem].ptr = '0' + fac_level % 10;
fac_level /= 10;
hdr_ctx.ist_vector[*nbelem].ptr--;
} while (fac_level && hdr_ctx.ist_vector[*nbelem].ptr > &hdr_ctx.priority_buffer[0]);
*hdr_ctx.ist_vector[*nbelem].ptr = '<';
hdr_ctx.ist_vector[(*nbelem)++].len = &hdr_ctx.priority_buffer[5] - hdr_ctx.ist_vector[0].ptr;
break;
case LOG_FORMAT_ISO:
case LOG_FORMAT_RAW:
break;
case LOG_FORMAT_UNSPEC:
case LOG_FORMATS:
ABORT_NOW();
}
/* prepare timestamp, stored into a max of 4 elems */
switch (format) {
case LOG_FORMAT_RFC3164:
/* rfc3164 ex: 'Jan 1 00:00:00 ' */
if (metadata && metadata[LOG_META_TIME].len == LOG_LEGACYTIME_LEN) {
hdr_ctx.ist_vector[(*nbelem)++] = metadata[LOG_META_TIME];
hdr_ctx.ist_vector[(*nbelem)++] = ist2(" ", 1);
/* time is set, break immediately */
break;
}
else if (metadata && metadata[LOG_META_TIME].len >= LOG_ISOTIME_MINLEN) {
int month;
char *timestamp = metadata[LOG_META_TIME].ptr;
/* iso time always begins like this: '1970-01-01T00:00:00' */
/* compute month */
month = 10*(timestamp[5] - '0') + (timestamp[6] - '0');
if (month)
month--;
if (month <= 11) {
/* builds log prefix ex: 'Jan 1 ' */
len = snprintf(hdr_ctx.timestamp_buffer, sizeof(hdr_ctx.timestamp_buffer),
"%s %c%c ", monthname[month],
timestamp[8] != '0' ? timestamp[8] : ' ',
timestamp[9]);
/* we reused the timestamp_buffer, signal that it does not
* contain local time anymore
*/
hdr_ctx.cur_legacy_time = 0;
if (len == 7) {
hdr_ctx.ist_vector[(*nbelem)++] = ist2(&hdr_ctx.timestamp_buffer[0], len);
/* adds 'HH:MM:SS' from iso time */
hdr_ctx.ist_vector[(*nbelem)++] = ist2(&timestamp[11], 8);
hdr_ctx.ist_vector[(*nbelem)++] = ist2(" ", 1);
/* we successfully reuse iso time, we can break */
break;
}
}
/* Failed to reuse isotime time, fallback to local legacy time */
}
if (unlikely(time != hdr_ctx.cur_legacy_time)) {
/* re-builds timestamp from the current local time */
get_localtime(time, &logtime);
len = snprintf(hdr_ctx.timestamp_buffer, sizeof(hdr_ctx.timestamp_buffer),
"%s %2d %02d:%02d:%02d ",
monthname[logtime.tm_mon],
logtime.tm_mday, logtime.tm_hour, logtime.tm_min, logtime.tm_sec);
if (len != LOG_LEGACYTIME_LEN+1)
hdr_ctx.cur_legacy_time = 0;
else
hdr_ctx.cur_legacy_time = time;
}
if (likely(hdr_ctx.cur_legacy_time))
hdr_ctx.ist_vector[(*nbelem)++] = ist2(&hdr_ctx.timestamp_buffer[0], LOG_LEGACYTIME_LEN+1);
else
hdr_ctx.ist_vector[(*nbelem)++] = ist2("Jan 1 00:00:00 ", LOG_LEGACYTIME_LEN+1);
break;
case LOG_FORMAT_RFC5424:
/* adds rfc5425 version prefix */
hdr_ctx.ist_vector[(*nbelem)++] = ist2("1 ", 2);
if (metadata && metadata[LOG_META_TIME].len == 1 && metadata[LOG_META_TIME].ptr[0] == '-') {
/* submitted len is NILVALUE, it is a valid timestamp for rfc5425 */
hdr_ctx.ist_vector[(*nbelem)++] = metadata[LOG_META_TIME];
hdr_ctx.ist_vector[(*nbelem)++] = ist2(" ", 1);
break;
}
/* let continue as 'timed' and 'iso' format for usual timestamp */
/* fall through */
case LOG_FORMAT_TIMED:
case LOG_FORMAT_ISO:
/* ISO format ex: '1900:01:01T12:00:00.123456Z'
* '1900:01:01T14:00:00+02:00'
* '1900:01:01T10:00:00.123456-02:00'
*/
if (metadata && metadata[LOG_META_TIME].len >= LOG_ISOTIME_MINLEN) {
hdr_ctx.ist_vector[(*nbelem)++] = metadata[LOG_META_TIME];
hdr_ctx.ist_vector[(*nbelem)++] = ist2(" ", 1);
/* time is set, break immediately */
break;
}
else if (metadata && metadata[LOG_META_TIME].len == LOG_LEGACYTIME_LEN) {
int month;
char *timestamp = metadata[LOG_META_TIME].ptr;
for (month = 0; month < 12; month++)
if (!memcmp(monthname[month], timestamp, 3))
break;
if (month < 12) {
/* get local time to retrieve year */
get_localtime(time, &logtime);
/* year seems changed since log */
if (logtime.tm_mon < month)
logtime.tm_year--;
/* builds rfc5424 prefix ex: '1900-01-01T' */
len = snprintf(hdr_ctx.timestamp_buffer, sizeof(hdr_ctx.timestamp_buffer),
"%4d-%02d-%c%cT",
logtime.tm_year+1900, month+1,
timestamp[4] != ' ' ? timestamp[4] : '0',
timestamp[5]);
/* we reused the timestamp_buffer, signal that it does not
* contain local time anymore
*/
hdr_ctx.cur_legacy_time = 0;
if (len == 11) {
hdr_ctx.ist_vector[(*nbelem)++] = ist2(&hdr_ctx.timestamp_buffer[0], len);
/* adds HH:MM:SS from legacy timestamp */
hdr_ctx.ist_vector[(*nbelem)++] = ist2(&timestamp[7], 8);
/* skip secfraq because it is optional */
/* according to rfc: -00:00 means we don't know the timezone */
hdr_ctx.ist_vector[(*nbelem)++] = ist2("-00:00 ", 7);
/* we successfully reuse legacy time, we can break */
break;
}
}
/* Failed to reuse legacy time, fallback to local iso time */
}
hdr_ctx.ist_vector[(*nbelem)++] = ist2(timeofday_as_iso_us(1), LOG_ISOTIME_MAXLEN + 1);
break;
case LOG_FORMAT_PRIO:
case LOG_FORMAT_SHORT:
case LOG_FORMAT_RAW:
break;
case LOG_FORMAT_UNSPEC:
case LOG_FORMATS:
ABORT_NOW();
}
/* prepare other meta data, stored into a max of 10 elems */
switch (format) {
case LOG_FORMAT_RFC3164:
if (metadata && metadata[LOG_META_HOST].len) {
hdr_ctx.ist_vector[(*nbelem)++] = metadata[LOG_META_HOST];
hdr_ctx.ist_vector[(*nbelem)++] = ist2(" ", 1);
}
else /* the caller MUST fill the hostname */
hdr_ctx.ist_vector[(*nbelem)++] = ist2("localhost ", 10);
if (!metadata || !metadata[LOG_META_TAG].len)
break;
hdr_ctx.ist_vector[(*nbelem)++] = metadata[LOG_META_TAG];
if (metadata[LOG_META_PID].len) {
hdr_ctx.ist_vector[(*nbelem)++] = ist2("[", 1);
hdr_ctx.ist_vector[(*nbelem)++] = metadata[LOG_META_PID];
hdr_ctx.ist_vector[(*nbelem)++] = ist2("]", 1);
}
hdr_ctx.ist_vector[(*nbelem)++] = ist2(": ", 2);
break;
case LOG_FORMAT_RFC5424:
if (metadata && metadata[LOG_META_HOST].len) {
hdr_ctx.ist_vector[(*nbelem)++] = metadata[LOG_META_HOST];
hdr_ctx.ist_vector[(*nbelem)++] = ist2(" ", 1);
}
else
hdr_ctx.ist_vector[(*nbelem)++] = ist2("- ", 2);
if (metadata && metadata[LOG_META_TAG].len) {
hdr_ctx.ist_vector[(*nbelem)++] = metadata[LOG_META_TAG];
hdr_ctx.ist_vector[(*nbelem)++] = ist2(" ", 1);
}
else
hdr_ctx.ist_vector[(*nbelem)++] = ist2("- ", 2);
if (metadata && metadata[LOG_META_PID].len) {
hdr_ctx.ist_vector[(*nbelem)++] = metadata[LOG_META_PID];
hdr_ctx.ist_vector[(*nbelem)++] = ist2(" ", 1);
}
else
hdr_ctx.ist_vector[(*nbelem)++] = ist2("- ", 2);
if (metadata && metadata[LOG_META_MSGID].len) {
hdr_ctx.ist_vector[(*nbelem)++] = metadata[LOG_META_MSGID];
hdr_ctx.ist_vector[(*nbelem)++] = ist2(" ", 1);
}
else
hdr_ctx.ist_vector[(*nbelem)++] = ist2("- ", 2);
if (metadata && metadata[LOG_META_STDATA].len) {
hdr_ctx.ist_vector[(*nbelem)++] = metadata[LOG_META_STDATA];
hdr_ctx.ist_vector[(*nbelem)++] = ist2(" ", 1);
}
else
hdr_ctx.ist_vector[(*nbelem)++] = ist2("- ", 2);
break;
case LOG_FORMAT_PRIO:
case LOG_FORMAT_SHORT:
case LOG_FORMAT_TIMED:
case LOG_FORMAT_ISO:
case LOG_FORMAT_RAW:
break;
case LOG_FORMAT_UNSPEC:
case LOG_FORMATS:
ABORT_NOW();
}
return hdr_ctx.ist_vector;
}
/*
* This function sends a syslog message to <logsrv>.
* The argument <metadata> MUST be an array of size
* LOG_META_FIELDS*sizeof(struct ist) containing data to build the header.
* It overrides the last byte of the message vector with an LF character.
* Does not return any error,
*/
static inline void __do_send_log(struct logsrv *logsrv, int nblogger, int level, int facility, struct ist *metadata, char *message, size_t size)
{
static THREAD_LOCAL struct iovec iovec[NB_LOG_HDR_MAX_ELEMENTS+1+1] = { }; /* header elements + message + LF */
static THREAD_LOCAL struct msghdr msghdr = {
//.msg_iov = iovec,
.msg_iovlen = NB_LOG_HDR_MAX_ELEMENTS+2
};
static THREAD_LOCAL int logfdunix = -1; /* syslog to AF_UNIX socket */
static THREAD_LOCAL int logfdinet = -1; /* syslog to AF_INET socket */
int *plogfd;
int sent;
size_t nbelem;
struct ist *msg_header = NULL;
msghdr.msg_iov = iovec;
/* historically some messages used to already contain the trailing LF
* or Zero. Let's remove all trailing LF or Zero
*/
while (size && (message[size-1] == '\n' || (message[size-1] == 0)))
size--;
if (logsrv->type == LOG_TARGET_BUFFER) {
plogfd = NULL;
goto send;
}
else if (logsrv->addr.ss_family == AF_CUST_EXISTING_FD) {
/* the socket's address is a file descriptor */
plogfd = (int *)&((struct sockaddr_in *)&logsrv->addr)->sin_addr.s_addr;
}
else if (logsrv->addr.ss_family == AF_UNIX)
plogfd = &logfdunix;
else
plogfd = &logfdinet;
if (plogfd && unlikely(*plogfd < 0)) {
/* socket not successfully initialized yet */
if ((*plogfd = socket(logsrv->addr.ss_family, SOCK_DGRAM,
(logsrv->addr.ss_family == AF_UNIX) ? 0 : IPPROTO_UDP)) < 0) {
static char once;
if (!once) {
once = 1; /* note: no need for atomic ops here */
ha_alert("socket() failed in logger #%d: %s (errno=%d)\n",
nblogger, strerror(errno), errno);
}
return;
} else {
/* we don't want to receive anything on this socket */
setsockopt(*plogfd, SOL_SOCKET, SO_RCVBUF, &zero, sizeof(zero));
/* does nothing under Linux, maybe needed for others */
shutdown(*plogfd, SHUT_RD);
fcntl(*plogfd, F_SETFD, fcntl(*plogfd, F_GETFD, FD_CLOEXEC) | FD_CLOEXEC);
}
}
msg_header = build_log_header(logsrv->format, level, facility, metadata, &nbelem);
send:
if (logsrv->type == LOG_TARGET_BUFFER) {
struct ist msg;
msg = ist2(message, size);
if (msg.len > logsrv->maxlen)
msg.len = logsrv->maxlen;
sent = sink_write(logsrv->sink, &msg, 1, level, logsrv->facility, metadata);
}
else if (logsrv->addr.ss_family == AF_CUST_EXISTING_FD) {
struct ist msg;
msg = ist2(message, size);
if (msg.len > logsrv->maxlen)
msg.len = logsrv->maxlen;
sent = fd_write_frag_line(*plogfd, logsrv->maxlen, msg_header, nbelem, &msg, 1, 1);
}
else {
int i = 0;
int totlen = logsrv->maxlen;
for (i = 0 ; i < nbelem ; i++ ) {
iovec[i].iov_base = msg_header[i].ptr;
iovec[i].iov_len = msg_header[i].len;
if (totlen <= iovec[i].iov_len) {
iovec[i].iov_len = totlen;
totlen = 0;
break;
}
totlen -= iovec[i].iov_len;
}
if (totlen) {
iovec[i].iov_base = message;
iovec[i].iov_len = size;
if (totlen <= iovec[i].iov_len)
iovec[i].iov_len = totlen;
i++;
}
iovec[i].iov_base = "\n"; /* insert a \n at the end of the message */
iovec[i].iov_len = 1;
i++;
msghdr.msg_iovlen = i;
msghdr.msg_name = (struct sockaddr *)&logsrv->addr;
msghdr.msg_namelen = get_addr_len(&logsrv->addr);
sent = sendmsg(*plogfd, &msghdr, MSG_DONTWAIT | MSG_NOSIGNAL);
}
if (sent < 0) {
static char once;
if (errno == EAGAIN)
_HA_ATOMIC_ADD(&dropped_logs, 1);
else if (!once) {
once = 1; /* note: no need for atomic ops here */
ha_alert("sendmsg()/writev() failed in logger #%d: %s (errno=%d)\n",
nblogger, strerror(errno), errno);
}
}
}
/*
* This function sends a syslog message.
* It doesn't care about errors nor does it report them.
* The argument <metadata> MUST be an array of size
* LOG_META_FIELDS*sizeof(struct ist) containing
* data to build the header.
*/
void process_send_log(struct list *logsrvs, int level, int facility,
struct ist *metadata, char *message, size_t size)
{
struct logsrv *logsrv;
int nblogger;
/* Send log messages to syslog server. */
nblogger = 0;
list_for_each_entry(logsrv, logsrvs, list) {
int in_range = 1;
/* we can filter the level of the messages that are sent to each logger */
if (level > logsrv->level)
continue;
if (logsrv->lb.smp_rgs) {
struct smp_log_range *curr_rg;
HA_SPIN_LOCK(LOGSRV_LOCK, &logsrv->lock);
curr_rg = &logsrv->lb.smp_rgs[logsrv->lb.curr_rg];
in_range = in_smp_log_range(curr_rg, logsrv->lb.curr_idx);
if (in_range) {
/* Let's consume this range. */
curr_rg->curr_idx = (curr_rg->curr_idx + 1) % curr_rg->sz;
if (!curr_rg->curr_idx) {
/* If consumed, let's select the next range. */
logsrv->lb.curr_rg = (logsrv->lb.curr_rg + 1) % logsrv->lb.smp_rgs_sz;
}
}
logsrv->lb.curr_idx = (logsrv->lb.curr_idx + 1) % logsrv->lb.smp_sz;
HA_SPIN_UNLOCK(LOGSRV_LOCK, &logsrv->lock);
}
if (in_range)
__do_send_log(logsrv, ++nblogger, MAX(level, logsrv->minlvl),
(facility == -1) ? logsrv->facility : facility,
metadata, message, size);
}
}
/*
* This function sends a syslog message.
* It doesn't care about errors nor does it report them.
* The arguments <sd> and <sd_size> are used for the structured-data part
* in RFC5424 formatted syslog messages.
*/
void __send_log(struct list *logsrvs, struct buffer *tagb, int level,
char *message, size_t size, char *sd, size_t sd_size)
{
static THREAD_LOCAL pid_t curr_pid;
static THREAD_LOCAL char pidstr[16];
static THREAD_LOCAL struct ist metadata[LOG_META_FIELDS];
if (logsrvs == NULL) {
if (!LIST_ISEMPTY(&global.logsrvs)) {
logsrvs = &global.logsrvs;
}
}
if (!logsrvs || LIST_ISEMPTY(logsrvs))
return;
if (!metadata[LOG_META_HOST].len) {
if (global.log_send_hostname)
metadata[LOG_META_HOST] = ist2(global.log_send_hostname, strlen(global.log_send_hostname));
else
metadata[LOG_META_HOST] = ist2(hostname, strlen(hostname));
}
if (!tagb || !tagb->area)
tagb = &global.log_tag;
if (tagb)
metadata[LOG_META_TAG] = ist2(tagb->area, tagb->data);
if (unlikely(curr_pid != getpid()))
metadata[LOG_META_PID].len = 0;
if (!metadata[LOG_META_PID].len) {
curr_pid = getpid();
ltoa_o(curr_pid, pidstr, sizeof(pidstr));
metadata[LOG_META_PID] = ist2(pidstr, strlen(pidstr));
}
metadata[LOG_META_STDATA] = ist2(sd, sd_size);
/* Remove trailing space of structured data */
while (metadata[LOG_META_STDATA].len && metadata[LOG_META_STDATA].ptr[metadata[LOG_META_STDATA].len-1] == ' ')
metadata[LOG_META_STDATA].len--;
return process_send_log(logsrvs, level, -1, metadata, message, size);
}
const char sess_cookie[8] = "NIDVEOU7"; /* No cookie, Invalid cookie, cookie for a Down server, Valid cookie, Expired cookie, Old cookie, Unused, unknown */
const char sess_set_cookie[8] = "NPDIRU67"; /* No set-cookie, Set-cookie found and left unchanged (passive),
Set-cookie Deleted, Set-Cookie Inserted, Set-cookie Rewritten,
Set-cookie Updated, unknown, unknown */
/*
* try to write a character if there is enough space, or goto out
*/
#define LOGCHAR(x) do { \
if (tmplog < dst + maxsize - 1) { \
*(tmplog++) = (x); \
} else { \
goto out; \
} \
} while(0)
/* Initializes some log data at boot */
static void init_log()
{
char *tmp;
int i;
/* Initialize the escape map for the RFC5424 structured-data : '"\]'
* inside PARAM-VALUE should be escaped with '\' as prefix.
* See https://tools.ietf.org/html/rfc5424#section-6.3.3 for more
* details.
*/
memset(rfc5424_escape_map, 0, sizeof(rfc5424_escape_map));
tmp = "\"\\]";
while (*tmp) {
ha_bit_set(*tmp, rfc5424_escape_map);
tmp++;
}
/* initialize the log header encoding map : '{|}"#' should be encoded with
* '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
* URL encoding only requires '"', '#' to be encoded as well as non-
* printable characters above.
*/
memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
memset(url_encode_map, 0, sizeof(url_encode_map));
for (i = 0; i < 32; i++) {
ha_bit_set(i, hdr_encode_map);
ha_bit_set(i, url_encode_map);
}
for (i = 127; i < 256; i++) {
ha_bit_set(i, hdr_encode_map);
ha_bit_set(i, url_encode_map);
}
tmp = "\"#{|}";
while (*tmp) {
ha_bit_set(*tmp, hdr_encode_map);
tmp++;
}
tmp = "\"#";
while (*tmp) {
ha_bit_set(*tmp, url_encode_map);
tmp++;
}
/* initialize the http header encoding map. The draft httpbis define the
* header content as:
*
* HTTP-message = start-line
* *( header-field CRLF )
* CRLF
* [ message-body ]
* header-field = field-name ":" OWS field-value OWS
* field-value = *( field-content / obs-fold )
* field-content = field-vchar [ 1*( SP / HTAB ) field-vchar ]
* obs-fold = CRLF 1*( SP / HTAB )
* field-vchar = VCHAR / obs-text
* VCHAR = %x21-7E
* obs-text = %x80-FF
*
* All the chars are encoded except "VCHAR", "obs-text", SP and HTAB.
* The encoded chars are form 0x00 to 0x08, 0x0a to 0x1f and 0x7f. The
* "obs-fold" is voluntarily forgotten because haproxy remove this.
*/
memset(http_encode_map, 0, sizeof(http_encode_map));
for (i = 0x00; i <= 0x08; i++)
ha_bit_set(i, http_encode_map);
for (i = 0x0a; i <= 0x1f; i++)
ha_bit_set(i, http_encode_map);
ha_bit_set(0x7f, http_encode_map);
}
INITCALL0(STG_PREPARE, init_log);
/* Initialize log buffers used for syslog messages */
int init_log_buffers()
{
logline = my_realloc2(logline, global.max_syslog_len + 1);
logline_rfc5424 = my_realloc2(logline_rfc5424, global.max_syslog_len + 1);
if (!logline || !logline_rfc5424)
return 0;
return 1;
}
/* Deinitialize log buffers used for syslog messages */
void deinit_log_buffers()
{
free(logline);
free(logline_rfc5424);
ring_free(_HA_ATOMIC_XCHG(&startup_logs, NULL));
logline = NULL;
logline_rfc5424 = NULL;
}
/* Builds a log line in <dst> based on <list_format>, and stops before reaching
* <maxsize> characters. Returns the size of the output string in characters,
* not counting the trailing zero which is always added if the resulting size
* is not zero. It requires a valid session and optionally a stream. If the
* stream is NULL, default values will be assumed for the stream part.
*/
int sess_build_logline(struct session *sess, struct stream *s, char *dst, size_t maxsize, struct list *list_format)
{
struct proxy *fe = sess->fe;
struct proxy *be;
struct http_txn *txn;
const struct strm_logs *logs;
struct connection *be_conn;
unsigned int s_flags;
unsigned int uniq_id;
struct buffer chunk;
char *uri;
char *spc;
char *qmark;
char *end;
struct tm tm;
int t_request;
int hdr;
int last_isspace = 1;
int nspaces = 0;
char *tmplog;
char *ret;
int iret;
struct logformat_node *tmp;
struct timeval tv;
struct strm_logs tmp_strm_log;
/* FIXME: let's limit ourselves to frontend logging for now. */
if (likely(s)) {
be = s->be;
txn = s->txn;
be_conn = cs_conn(objt_cs(s->si[1].end));
s_flags = s->flags;
uniq_id = s->uniq_id;
logs = &s->logs;
} else {
/* we have no stream so we first need to initialize a few
* things that are needed later. We do increment the request
* ID so that it's uniquely assigned to this request just as
* if the request had reached the point of being processed.
* A request error is reported as it's the only element we have
* here and which justifies emitting such a log.
*/
be = fe;
txn = NULL;
be_conn = NULL;
s_flags = SF_ERR_PRXCOND | SF_FINST_R;
uniq_id = _HA_ATOMIC_XADD(&global.req_count, 1);
/* prepare a valid log structure */
tmp_strm_log.tv_accept = sess->tv_accept;
tmp_strm_log.accept_date = sess->accept_date;
tmp_strm_log.t_handshake = sess->t_handshake;
tmp_strm_log.t_idle = tv_ms_elapsed(&sess->tv_accept, &now) - sess->t_handshake;
tv_zero(&tmp_strm_log.tv_request);
tmp_strm_log.t_queue = -1;
tmp_strm_log.t_connect = -1;
tmp_strm_log.t_data = -1;
tmp_strm_log.t_close = tv_ms_elapsed(&sess->tv_accept, &now);
tmp_strm_log.bytes_in = 0;
tmp_strm_log.bytes_out = 0;
tmp_strm_log.prx_queue_pos = 0;
tmp_strm_log.srv_queue_pos = 0;
logs = &tmp_strm_log;
}
t_request = -1;
if (tv_isge(&logs->tv_request, &logs->tv_accept))
t_request = tv_ms_elapsed(&logs->tv_accept, &logs->tv_request);
tmplog = dst;
/* fill logbuffer */
if (LIST_ISEMPTY(list_format))
return 0;
list_for_each_entry(tmp, list_format, list) {
struct connection *conn;
const char *src = NULL;
struct sample *key;
const struct buffer empty = { };
switch (tmp->type) {
case LOG_FMT_SEPARATOR:
if (!last_isspace) {
LOGCHAR(' ');
last_isspace = 1;
}
break;
case LOG_FMT_TEXT: // text
src = tmp->arg;
iret = strlcpy2(tmplog, src, dst + maxsize - tmplog);
if (iret == 0)
goto out;
tmplog += iret;
last_isspace = 0;
break;
case LOG_FMT_EXPR: // sample expression, may be request or response
key = NULL;
if (tmp->options & LOG_OPT_REQ_CAP)
key = sample_fetch_as_type(be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL, tmp->expr, SMP_T_STR);
if (!key && (tmp->options & LOG_OPT_RES_CAP))
key = sample_fetch_as_type(be, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL, tmp->expr, SMP_T_STR);
if (tmp->options & LOG_OPT_HTTP)
ret = lf_encode_chunk(tmplog, dst + maxsize,
'%', http_encode_map, key ? &key->data.u.str : &empty, tmp);
else
ret = lf_text_len(tmplog,
key ? key->data.u.str.area : NULL,
key ? key->data.u.str.data : 0,
dst + maxsize - tmplog,
tmp);
if (ret == 0)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_CLIENTIP: // %ci
conn = objt_conn(sess->origin);
if (conn && conn_get_src(conn))
ret = lf_ip(tmplog, (struct sockaddr *)conn->src, dst + maxsize - tmplog, tmp);
else
ret = lf_text_len(tmplog, NULL, 0, dst + maxsize - tmplog, tmp);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_CLIENTPORT: // %cp
conn = objt_conn(sess->origin);
if (conn && conn_get_src(conn)) {
if (conn->src->ss_family == AF_UNIX) {
ret = ltoa_o(sess->listener->luid, tmplog, dst + maxsize - tmplog);
} else {
ret = lf_port(tmplog, (struct sockaddr *)conn->src,
dst + maxsize - tmplog, tmp);
}
}
else
ret = lf_text_len(tmplog, NULL, 0, dst + maxsize - tmplog, tmp);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_FRONTENDIP: // %fi
conn = objt_conn(sess->origin);
if (conn && conn_get_dst(conn)) {
ret = lf_ip(tmplog, (struct sockaddr *)conn->dst, dst + maxsize - tmplog, tmp);
}
else
ret = lf_text_len(tmplog, NULL, 0, dst + maxsize - tmplog, tmp);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_FRONTENDPORT: // %fp
conn = objt_conn(sess->origin);
if (conn && conn_get_dst(conn)) {
if (conn->dst->ss_family == AF_UNIX)
ret = ltoa_o(sess->listener->luid, tmplog, dst + maxsize - tmplog);
else
ret = lf_port(tmplog, (struct sockaddr *)conn->dst, dst + maxsize - tmplog, tmp);
}
else
ret = lf_text_len(tmplog, NULL, 0, dst + maxsize - tmplog, tmp);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_BACKENDIP: // %bi
if (be_conn && conn_get_src(be_conn))
ret = lf_ip(tmplog, (const struct sockaddr *)be_conn->src, dst + maxsize - tmplog, tmp);
else
ret = lf_text_len(tmplog, NULL, 0, dst + maxsize - tmplog, tmp);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_BACKENDPORT: // %bp
if (be_conn && conn_get_src(be_conn))
ret = lf_port(tmplog, (struct sockaddr *)be_conn->src, dst + maxsize - tmplog, tmp);
else
ret = lf_text_len(tmplog, NULL, 0, dst + maxsize - tmplog, tmp);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_SERVERIP: // %si
if (be_conn && conn_get_dst(be_conn))
ret = lf_ip(tmplog, (struct sockaddr *)be_conn->dst, dst + maxsize - tmplog, tmp);
else
ret = lf_text_len(tmplog, NULL, 0, dst + maxsize - tmplog, tmp);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_SERVERPORT: // %sp
if (be_conn && conn_get_dst(be_conn))
ret = lf_port(tmplog, (struct sockaddr *)be_conn->dst, dst + maxsize - tmplog, tmp);
else
ret = lf_text_len(tmplog, NULL, 0, dst + maxsize - tmplog, tmp);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_DATE: // %t = accept date
get_localtime(logs->accept_date.tv_sec, &tm);
ret = date2str_log(tmplog, &tm, &logs->accept_date, dst + maxsize - tmplog);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_tr: // %tr = start of request date
/* Note that the timers are valid if we get here */
tv_ms_add(&tv, &logs->accept_date, logs->t_idle >= 0 ? logs->t_idle + logs->t_handshake : 0);
get_localtime(tv.tv_sec, &tm);
ret = date2str_log(tmplog, &tm, &tv, dst + maxsize - tmplog);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_DATEGMT: // %T = accept date, GMT
get_gmtime(logs->accept_date.tv_sec, &tm);
ret = gmt2str_log(tmplog, &tm, dst + maxsize - tmplog);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_trg: // %trg = start of request date, GMT
tv_ms_add(&tv, &logs->accept_date, logs->t_idle >= 0 ? logs->t_idle + logs->t_handshake : 0);
get_gmtime(tv.tv_sec, &tm);
ret = gmt2str_log(tmplog, &tm, dst + maxsize - tmplog);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_DATELOCAL: // %Tl = accept date, local
get_localtime(logs->accept_date.tv_sec, &tm);
ret = localdate2str_log(tmplog, logs->accept_date.tv_sec, &tm, dst + maxsize - tmplog);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_trl: // %trl = start of request date, local
tv_ms_add(&tv, &logs->accept_date, logs->t_idle >= 0 ? logs->t_idle + logs->t_handshake : 0);
get_localtime(tv.tv_sec, &tm);
ret = localdate2str_log(tmplog, tv.tv_sec, &tm, dst + maxsize - tmplog);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_TS: // %Ts
if (tmp->options & LOG_OPT_HEXA) {
iret = snprintf(tmplog, dst + maxsize - tmplog, "%04X", (unsigned int)logs->accept_date.tv_sec);
if (iret < 0 || iret > dst + maxsize - tmplog)
goto out;
last_isspace = 0;
tmplog += iret;
} else {
ret = ltoa_o(logs->accept_date.tv_sec, tmplog, dst + maxsize - tmplog);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
}
break;
case LOG_FMT_MS: // %ms
if (tmp->options & LOG_OPT_HEXA) {
iret = snprintf(tmplog, dst + maxsize - tmplog, "%02X",(unsigned int)logs->accept_date.tv_usec/1000);
if (iret < 0 || iret > dst + maxsize - tmplog)
goto out;
last_isspace = 0;
tmplog += iret;
} else {
if ((dst + maxsize - tmplog) < 4)
goto out;
ret = utoa_pad((unsigned int)logs->accept_date.tv_usec/1000,
tmplog, 4);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
}
break;
case LOG_FMT_FRONTEND: // %f
src = fe->id;
ret = lf_text(tmplog, src, dst + maxsize - tmplog, tmp);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_FRONTEND_XPRT: // %ft
src = fe->id;
if (tmp->options & LOG_OPT_QUOTE)
LOGCHAR('"');
iret = strlcpy2(tmplog, src, dst + maxsize - tmplog);
if (iret == 0)
goto out;
tmplog += iret;
if (sess->listener->bind_conf->xprt == xprt_get(XPRT_SSL))
LOGCHAR('~');
if (tmp->options & LOG_OPT_QUOTE)
LOGCHAR('"');
last_isspace = 0;
break;
#ifdef USE_OPENSSL
case LOG_FMT_SSL_CIPHER: // %sslc
src = NULL;
conn = objt_conn(sess->origin);
if (conn) {
src = ssl_sock_get_cipher_name(conn);
}
ret = lf_text(tmplog, src, dst + maxsize - tmplog, tmp);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_SSL_VERSION: // %sslv
src = NULL;
conn = objt_conn(sess->origin);
if (conn) {
src = ssl_sock_get_proto_version(conn);
}
ret = lf_text(tmplog, src, dst + maxsize - tmplog, tmp);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
#endif
case LOG_FMT_BACKEND: // %b
src = be->id;
ret = lf_text(tmplog, src, dst + maxsize - tmplog, tmp);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_SERVER: // %s
switch (obj_type(s ? s->target : NULL)) {
case OBJ_TYPE_SERVER:
src = __objt_server(s->target)->id;
break;
case OBJ_TYPE_APPLET:
src = __objt_applet(s->target)->name;
break;
default:
src = "<NOSRV>";
break;
}
ret = lf_text(tmplog, src, dst + maxsize - tmplog, tmp);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_Th: // %Th = handshake time
ret = ltoa_o(logs->t_handshake, tmplog, dst + maxsize - tmplog);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_Ti: // %Ti = HTTP idle time
ret = ltoa_o(logs->t_idle, tmplog, dst + maxsize - tmplog);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_TR: // %TR = HTTP request time
ret = ltoa_o((t_request >= 0) ? t_request - logs->t_idle - logs->t_handshake : -1,
tmplog, dst + maxsize - tmplog);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_TQ: // %Tq = Th + Ti + TR
ret = ltoa_o(t_request, tmplog, dst + maxsize - tmplog);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_TW: // %Tw
ret = ltoa_o((logs->t_queue >= 0) ? logs->t_queue - t_request : -1,
tmplog, dst + maxsize - tmplog);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_TC: // %Tc
ret = ltoa_o((logs->t_connect >= 0) ? logs->t_connect - logs->t_queue : -1,
tmplog, dst + maxsize - tmplog);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_Tr: // %Tr
ret = ltoa_o((logs->t_data >= 0) ? logs->t_data - logs->t_connect : -1,
tmplog, dst + maxsize - tmplog);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_TD: // %Td
if (be->mode == PR_MODE_HTTP)
ret = ltoa_o((logs->t_data >= 0) ? logs->t_close - logs->t_data : -1,
tmplog, dst + maxsize - tmplog);
else
ret = ltoa_o((logs->t_connect >= 0) ? logs->t_close - logs->t_connect : -1,
tmplog, dst + maxsize - tmplog);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_Ta: // %Ta = active time = Tt - Th - Ti
if (!(fe->to_log & LW_BYTES))
LOGCHAR('+');
ret = ltoa_o(logs->t_close - (logs->t_idle >= 0 ? logs->t_idle + logs->t_handshake : 0),
tmplog, dst + maxsize - tmplog);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_TT: // %Tt = total time
if (!(fe->to_log & LW_BYTES))
LOGCHAR('+');
ret = ltoa_o(logs->t_close, tmplog, dst + maxsize - tmplog);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_TU: // %Tu = total time seen by user = Tt - Ti
if (!(fe->to_log & LW_BYTES))
LOGCHAR('+');
ret = ltoa_o(logs->t_close - (logs->t_idle >= 0 ? logs->t_idle : 0),
tmplog, dst + maxsize - tmplog);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_STATUS: // %ST
ret = ltoa_o(txn ? txn->status : 0, tmplog, dst + maxsize - tmplog);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_BYTES: // %B
if (!(fe->to_log & LW_BYTES))
LOGCHAR('+');
ret = lltoa(logs->bytes_out, tmplog, dst + maxsize - tmplog);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_BYTES_UP: // %U
ret = lltoa(logs->bytes_in, tmplog, dst + maxsize - tmplog);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_CCLIENT: // %CC
src = txn ? txn->cli_cookie : NULL;
ret = lf_text(tmplog, src, dst + maxsize - tmplog, tmp);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_CSERVER: // %CS
src = txn ? txn->srv_cookie : NULL;
ret = lf_text(tmplog, src, dst + maxsize - tmplog, tmp);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_TERMSTATE: // %ts
LOGCHAR(sess_term_cond[(s_flags & SF_ERR_MASK) >> SF_ERR_SHIFT]);
LOGCHAR(sess_fin_state[(s_flags & SF_FINST_MASK) >> SF_FINST_SHIFT]);
*tmplog = '\0';
last_isspace = 0;
break;
case LOG_FMT_TERMSTATE_CK: // %tsc, same as TS with cookie state (for mode HTTP)
LOGCHAR(sess_term_cond[(s_flags & SF_ERR_MASK) >> SF_ERR_SHIFT]);
LOGCHAR(sess_fin_state[(s_flags & SF_FINST_MASK) >> SF_FINST_SHIFT]);
LOGCHAR((txn && (be->ck_opts & PR_CK_ANY)) ? sess_cookie[(txn->flags & TX_CK_MASK) >> TX_CK_SHIFT] : '-');
LOGCHAR((txn && (be->ck_opts & PR_CK_ANY)) ? sess_set_cookie[(txn->flags & TX_SCK_MASK) >> TX_SCK_SHIFT] : '-');
last_isspace = 0;
break;
case LOG_FMT_ACTCONN: // %ac
ret = ltoa_o(actconn, tmplog, dst + maxsize - tmplog);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_FECONN: // %fc
ret = ltoa_o(fe->feconn, tmplog, dst + maxsize - tmplog);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_BECONN: // %bc
ret = ltoa_o(be->beconn, tmplog, dst + maxsize - tmplog);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_SRVCONN: // %sc
ret = ultoa_o(objt_server(s ? s->target : NULL) ?
objt_server(s->target)->cur_sess :
0, tmplog, dst + maxsize - tmplog);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_RETRIES: // %rq
if (s_flags & SF_REDISP)
LOGCHAR('+');
ret = ltoa_o((s && s->si[1].conn_retries > 0) ?
(be->conn_retries - s->si[1].conn_retries) :
be->conn_retries, tmplog, dst + maxsize - tmplog);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_SRVQUEUE: // %sq
ret = ltoa_o(logs->srv_queue_pos, tmplog, dst + maxsize - tmplog);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_BCKQUEUE: // %bq
ret = ltoa_o(logs->prx_queue_pos, tmplog, dst + maxsize - tmplog);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_HDRREQUEST: // %hr
/* request header */
if (fe->nb_req_cap && s && s->req_cap) {
if (tmp->options & LOG_OPT_QUOTE)
LOGCHAR('"');
LOGCHAR('{');
for (hdr = 0; hdr < fe->nb_req_cap; hdr++) {
if (hdr)
LOGCHAR('|');
if (s->req_cap[hdr] != NULL) {
ret = lf_encode_string(tmplog, dst + maxsize,
'#', hdr_encode_map, s->req_cap[hdr], tmp);
if (ret == NULL || *ret != '\0')
goto out;
tmplog = ret;
}
}
LOGCHAR('}');
if (tmp->options & LOG_OPT_QUOTE)
LOGCHAR('"');
last_isspace = 0;
}
break;
case LOG_FMT_HDRREQUESTLIST: // %hrl
/* request header list */
if (fe->nb_req_cap && s && s->req_cap) {
for (hdr = 0; hdr < fe->nb_req_cap; hdr++) {
if (hdr > 0)
LOGCHAR(' ');
if (tmp->options & LOG_OPT_QUOTE)
LOGCHAR('"');
if (s->req_cap[hdr] != NULL) {
ret = lf_encode_string(tmplog, dst + maxsize,
'#', hdr_encode_map, s->req_cap[hdr], tmp);
if (ret == NULL || *ret != '\0')
goto out;
tmplog = ret;
} else if (!(tmp->options & LOG_OPT_QUOTE))
LOGCHAR('-');
if (tmp->options & LOG_OPT_QUOTE)
LOGCHAR('"');
last_isspace = 0;
}
}
break;
case LOG_FMT_HDRRESPONS: // %hs
/* response header */
if (fe->nb_rsp_cap && s && s->res_cap) {
if (tmp->options & LOG_OPT_QUOTE)
LOGCHAR('"');
LOGCHAR('{');
for (hdr = 0; hdr < fe->nb_rsp_cap; hdr++) {
if (hdr)
LOGCHAR('|');
if (s->res_cap[hdr] != NULL) {
ret = lf_encode_string(tmplog, dst + maxsize,
'#', hdr_encode_map, s->res_cap[hdr], tmp);
if (ret == NULL || *ret != '\0')
goto out;
tmplog = ret;
}
}
LOGCHAR('}');
last_isspace = 0;
if (tmp->options & LOG_OPT_QUOTE)
LOGCHAR('"');
}
break;
case LOG_FMT_HDRRESPONSLIST: // %hsl
/* response header list */
if (fe->nb_rsp_cap && s && s->res_cap) {
for (hdr = 0; hdr < fe->nb_rsp_cap; hdr++) {
if (hdr > 0)
LOGCHAR(' ');
if (tmp->options & LOG_OPT_QUOTE)
LOGCHAR('"');
if (s->res_cap[hdr] != NULL) {
ret = lf_encode_string(tmplog, dst + maxsize,
'#', hdr_encode_map, s->res_cap[hdr], tmp);
if (ret == NULL || *ret != '\0')
goto out;
tmplog = ret;
} else if (!(tmp->options & LOG_OPT_QUOTE))
LOGCHAR('-');
if (tmp->options & LOG_OPT_QUOTE)
LOGCHAR('"');
last_isspace = 0;
}
}
break;
case LOG_FMT_REQ: // %r
/* Request */
if (tmp->options & LOG_OPT_QUOTE)
LOGCHAR('"');
uri = txn && txn->uri ? txn->uri : "<BADREQ>";
ret = lf_encode_string(tmplog, dst + maxsize,
'#', url_encode_map, uri, tmp);
if (ret == NULL || *ret != '\0')
goto out;
tmplog = ret;
if (tmp->options & LOG_OPT_QUOTE)
LOGCHAR('"');
last_isspace = 0;
break;
case LOG_FMT_HTTP_PATH: // %HP
uri = txn && txn->uri ? txn->uri : "<BADREQ>";
if (tmp->options & LOG_OPT_QUOTE)
LOGCHAR('"');
end = uri + strlen(uri);
// look for the first whitespace character
while (uri < end && !HTTP_IS_SPHT(*uri))
uri++;
// keep advancing past multiple spaces
while (uri < end && HTTP_IS_SPHT(*uri)) {
uri++; nspaces++;
}
// look for first space or question mark after url
spc = uri;
while (spc < end && *spc != '?' && !HTTP_IS_SPHT(*spc))
spc++;
if (!txn || !txn->uri || nspaces == 0) {
chunk.area = "<BADREQ>";
chunk.data = strlen("<BADREQ>");
} else {
chunk.area = uri;
chunk.data = spc - uri;
}
ret = lf_encode_chunk(tmplog, dst + maxsize, '#', url_encode_map, &chunk, tmp);
if (ret == NULL || *ret != '\0')
goto out;
tmplog = ret;
if (tmp->options & LOG_OPT_QUOTE)
LOGCHAR('"');
last_isspace = 0;
break;
case LOG_FMT_HTTP_QUERY: // %HQ
if (tmp->options & LOG_OPT_QUOTE)
LOGCHAR('"');
if (!txn || !txn->uri) {
chunk.area = "<BADREQ>";
chunk.data = strlen("<BADREQ>");
} else {
uri = txn->uri;
end = uri + strlen(uri);
// look for the first question mark
while (uri < end && *uri != '?')
uri++;
qmark = uri;
// look for first space or question mark after url
while (uri < end && !HTTP_IS_SPHT(*uri))
uri++;
chunk.area = qmark;
chunk.data = uri - qmark;
}
ret = lf_encode_chunk(tmplog, dst + maxsize, '#', url_encode_map, &chunk, tmp);
if (ret == NULL || *ret != '\0')
goto out;
tmplog = ret;
if (tmp->options & LOG_OPT_QUOTE)
LOGCHAR('"');
last_isspace = 0;
break;
case LOG_FMT_HTTP_URI: // %HU
uri = txn && txn->uri ? txn->uri : "<BADREQ>";
if (tmp->options & LOG_OPT_QUOTE)
LOGCHAR('"');
end = uri + strlen(uri);
// look for the first whitespace character
while (uri < end && !HTTP_IS_SPHT(*uri))
uri++;
// keep advancing past multiple spaces
while (uri < end && HTTP_IS_SPHT(*uri)) {
uri++; nspaces++;
}
// look for first space after url
spc = uri;
while (spc < end && !HTTP_IS_SPHT(*spc))
spc++;
if (!txn || !txn->uri || nspaces == 0) {
chunk.area = "<BADREQ>";
chunk.data = strlen("<BADREQ>");
} else {
chunk.area = uri;
chunk.data = spc - uri;
}
ret = lf_encode_chunk(tmplog, dst + maxsize, '#', url_encode_map, &chunk, tmp);
if (ret == NULL || *ret != '\0')
goto out;
tmplog = ret;
if (tmp->options & LOG_OPT_QUOTE)
LOGCHAR('"');
last_isspace = 0;
break;
case LOG_FMT_HTTP_METHOD: // %HM
uri = txn && txn->uri ? txn->uri : "<BADREQ>";
if (tmp->options & LOG_OPT_QUOTE)
LOGCHAR('"');
end = uri + strlen(uri);
// look for the first whitespace character
spc = uri;
while (spc < end && !HTTP_IS_SPHT(*spc))
spc++;
if (spc == end) { // odd case, we have txn->uri, but we only got a verb
chunk.area = "<BADREQ>";
chunk.data = strlen("<BADREQ>");
} else {
chunk.area = uri;
chunk.data = spc - uri;
}
ret = lf_encode_chunk(tmplog, dst + maxsize, '#', url_encode_map, &chunk, tmp);
if (ret == NULL || *ret != '\0')
goto out;
tmplog = ret;
if (tmp->options & LOG_OPT_QUOTE)
LOGCHAR('"');
last_isspace = 0;
break;
case LOG_FMT_HTTP_VERSION: // %HV
uri = txn && txn->uri ? txn->uri : "<BADREQ>";
if (tmp->options & LOG_OPT_QUOTE)
LOGCHAR('"');
end = uri + strlen(uri);
// look for the first whitespace character
while (uri < end && !HTTP_IS_SPHT(*uri))
uri++;
// keep advancing past multiple spaces
while (uri < end && HTTP_IS_SPHT(*uri)) {
uri++; nspaces++;
}
// look for the next whitespace character
while (uri < end && !HTTP_IS_SPHT(*uri))
uri++;
// keep advancing past multiple spaces
while (uri < end && HTTP_IS_SPHT(*uri))
uri++;
if (!txn || !txn->uri || nspaces == 0) {
chunk.area = "<BADREQ>";
chunk.data = strlen("<BADREQ>");
} else if (uri == end) {
chunk.area = "HTTP/0.9";
chunk.data = strlen("HTTP/0.9");
} else {
chunk.area = uri;
chunk.data = end - uri;
}
ret = lf_encode_chunk(tmplog, dst + maxsize, '#', url_encode_map, &chunk, tmp);
if (ret == NULL || *ret != '\0')
goto out;
tmplog = ret;
if (tmp->options & LOG_OPT_QUOTE)
LOGCHAR('"');
last_isspace = 0;
break;
case LOG_FMT_COUNTER: // %rt
if (tmp->options & LOG_OPT_HEXA) {
iret = snprintf(tmplog, dst + maxsize - tmplog, "%04X", uniq_id);
if (iret < 0 || iret > dst + maxsize - tmplog)
goto out;
last_isspace = 0;
tmplog += iret;
} else {
ret = ltoa_o(uniq_id, tmplog, dst + maxsize - tmplog);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
}
break;
case LOG_FMT_LOGCNT: // %lc
if (tmp->options & LOG_OPT_HEXA) {
iret = snprintf(tmplog, dst + maxsize - tmplog, "%04X", fe->log_count);
if (iret < 0 || iret > dst + maxsize - tmplog)
goto out;
last_isspace = 0;
tmplog += iret;
} else {
ret = ultoa_o(fe->log_count, tmplog, dst + maxsize - tmplog);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
}
break;
case LOG_FMT_HOSTNAME: // %H
src = hostname;
ret = lf_text(tmplog, src, dst + maxsize - tmplog, tmp);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
case LOG_FMT_PID: // %pid
if (tmp->options & LOG_OPT_HEXA) {
iret = snprintf(tmplog, dst + maxsize - tmplog, "%04X", pid);
if (iret < 0 || iret > dst + maxsize - tmplog)
goto out;
last_isspace = 0;
tmplog += iret;
} else {
ret = ltoa_o(pid, tmplog, dst + maxsize - tmplog);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
}
break;
case LOG_FMT_UNIQUEID: // %ID
ret = NULL;
if (s)
ret = lf_text_len(tmplog, s->unique_id.ptr, s->unique_id.len, maxsize - (tmplog - dst), tmp);
else
ret = lf_text_len(tmplog, NULL, 0, maxsize - (tmplog - dst), tmp);
if (ret == NULL)
goto out;
tmplog = ret;
last_isspace = 0;
break;
}
}
out:
/* *tmplog is a unused character */
*tmplog = '\0';
return tmplog - dst;
}
/*
* send a log for the stream when we have enough info about it.
* Will not log if the frontend has no log defined.
*/
void strm_log(struct stream *s)
{
struct session *sess = s->sess;
int size, err, level;
int sd_size = 0;
/* if we don't want to log normal traffic, return now */
err = (s->flags & SF_REDISP) ||
((s->flags & SF_ERR_MASK) > SF_ERR_LOCAL) ||
(((s->flags & SF_ERR_MASK) == SF_ERR_NONE) &&
(s->si[1].conn_retries != s->be->conn_retries)) ||
((sess->fe->mode == PR_MODE_HTTP) && s->txn && s->txn->status >= 500);
if (!err && (sess->fe->options2 & PR_O2_NOLOGNORM))
return;
if (LIST_ISEMPTY(&sess->fe->logsrvs))
return;
if (s->logs.level) { /* loglevel was overridden */
if (s->logs.level == -1) {
s->logs.logwait = 0; /* logs disabled */
return;
}
level = s->logs.level - 1;
}
else {
level = LOG_INFO;
if (err && (sess->fe->options2 & PR_O2_LOGERRORS))
level = LOG_ERR;
}
/* if unique-id was not generated */
if (!isttest(s->unique_id) && !LIST_ISEMPTY(&sess->fe->format_unique_id)) {
stream_generate_unique_id(s, &sess->fe->format_unique_id);
}
if (!LIST_ISEMPTY(&sess->fe->logformat_sd)) {
sd_size = build_logline(s, logline_rfc5424, global.max_syslog_len,
&sess->fe->logformat_sd);
}
size = build_logline(s, logline, global.max_syslog_len, &sess->fe->logformat);
if (size > 0) {
_HA_ATOMIC_ADD(&sess->fe->log_count, 1);
__send_log(&sess->fe->logsrvs, &sess->fe->log_tag, level,
logline, size + 1, logline_rfc5424, sd_size);
s->logs.logwait = 0;
}
}
/*
* send a minimalist log for the session. Will not log if the frontend has no
* log defined. It is assumed that this is only used to report anomalies that
* cannot lead to the creation of a regular stream. Because of this the log
* level is LOG_INFO or LOG_ERR depending on the "log-separate-error" setting
* in the frontend. The caller must simply know that it should not call this
* function to report unimportant events. It is safe to call this function with
* sess==NULL (will not do anything).
*/
void sess_log(struct session *sess)
{
int size, level;
int sd_size = 0;
if (!sess)
return;
if (LIST_ISEMPTY(&sess->fe->logsrvs))
return;
level = LOG_INFO;
if (sess->fe->options2 & PR_O2_LOGERRORS)
level = LOG_ERR;
if (!LIST_ISEMPTY(&sess->fe->logformat_sd)) {
sd_size = sess_build_logline(sess, NULL,
logline_rfc5424, global.max_syslog_len,
&sess->fe->logformat_sd);
}
size = sess_build_logline(sess, NULL, logline, global.max_syslog_len, &sess->fe->logformat);
if (size > 0) {
_HA_ATOMIC_ADD(&sess->fe->log_count, 1);
__send_log(&sess->fe->logsrvs, &sess->fe->log_tag, level,
logline, size + 1, logline_rfc5424, sd_size);
}
}
void app_log(struct list *logsrvs, struct buffer *tag, int level, const char *format, ...)
{
va_list argp;
int data_len;
if (level < 0 || format == NULL || logline == NULL)
return;
va_start(argp, format);
data_len = vsnprintf(logline, global.max_syslog_len, format, argp);
if (data_len < 0 || data_len > global.max_syslog_len)
data_len = global.max_syslog_len;
va_end(argp);
__send_log(logsrvs, tag, level, logline, data_len, default_rfc5424_sd_log_format, 2);
}
/*
* This function parse a received log message <buf>, of size <buflen>
* it fills <level>, <facility> and <metadata> depending of the detected
* header format and message will point on remaining payload of <size>
*
* <metadata> must point on a preallocated array of LOG_META_FIELDS*sizeof(struct ist)
* struct ist len will be set to 0 if field is not found
* <level> and <facility> will be set to -1 if not found.
*/
void parse_log_message(char *buf, size_t buflen, int *level, int *facility,
struct ist *metadata, char **message, size_t *size)
{
char *p;
int fac_level = 0;
*level = *facility = -1;
*message = buf;
*size = buflen;
memset(metadata, 0, LOG_META_FIELDS*sizeof(struct ist));
p = buf;
if (*size < 2 || *p != '<')
return;
p++;
while (*p != '>') {
if (*p > '9' || *p < '0')
return;
fac_level = 10*fac_level + (*p - '0');
p++;
if ((p - buf) > buflen)
return;
}
*facility = fac_level >> 3;
*level = fac_level & 0x7;
p++;
metadata[LOG_META_PRIO] = ist2(buf, p - buf);
buflen -= p - buf;
buf = p;
*size = buflen;
*message = buf;
/* for rfc5424, prio is always followed by '1' and ' ' */
if ((*size > 2) && (p[0] == '1') && (p[1] == ' ')) {
/* format is always '1 TIMESTAMP HOSTNAME TAG PID MSGID STDATA '
* followed by message.
* Each header field can present NILVALUE: '-'
*/
p += 2;
/* timestamp is NILVALUE '-' */
if (*size > 2 && (p[0] == '-') && p[1] == ' ') {
metadata[LOG_META_TIME] = ist2(p, 1);
p++;
}
else if (*size > LOG_ISOTIME_MINLEN) {
metadata[LOG_META_TIME].ptr = p;
/* check if optional secfrac is present
* in timestamp.
* possible format are:
* ex: '1970-01-01T00:00:00.000000Z'
* '1970-01-01T00:00:00.000000+00:00'
* '1970-01-01T00:00:00.000000-00:00'
* '1970-01-01T00:00:00Z'
* '1970-01-01T00:00:00+00:00'
* '1970-01-01T00:00:00-00:00'
*/
p += 19;
if (*p == '.') {
p++;
if ((p - buf) >= buflen)
goto bad_format;
while (*p != 'Z' && *p != '+' && *p != '-') {
if ((unsigned char)(*p - '0') > 9)
goto bad_format;
p++;
if ((p - buf) >= buflen)
goto bad_format;
}
}
if (*p == 'Z')
p++;
else
p += 6; /* case of '+00:00 or '-00:00' */
if ((p - buf) >= buflen || *p != ' ')
goto bad_format;
metadata[LOG_META_TIME].len = p - metadata[LOG_META_TIME].ptr;
}
else
goto bad_format;
p++;
if ((p - buf) >= buflen || *p == ' ')
goto bad_format;
metadata[LOG_META_HOST].ptr = p;
while (*p != ' ') {
p++;
if ((p - buf) >= buflen)
goto bad_format;
}
metadata[LOG_META_HOST].len = p - metadata[LOG_META_HOST].ptr;
if (metadata[LOG_META_HOST].len == 1 && metadata[LOG_META_HOST].ptr[0] == '-')
metadata[LOG_META_HOST].len = 0;
p++;
if ((p - buf) >= buflen || *p == ' ')
goto bad_format;
metadata[LOG_META_TAG].ptr = p;
while (*p != ' ') {
p++;
if ((p - buf) >= buflen)
goto bad_format;
}
metadata[LOG_META_TAG].len = p - metadata[LOG_META_TAG].ptr;
if (metadata[LOG_META_TAG].len == 1 && metadata[LOG_META_TAG].ptr[0] == '-')
metadata[LOG_META_TAG].len = 0;
p++;
if ((p - buf) >= buflen || *p == ' ')
goto bad_format;
metadata[LOG_META_PID].ptr = p;
while (*p != ' ') {
p++;
if ((p - buf) >= buflen)
goto bad_format;
}
metadata[LOG_META_PID].len = p - metadata[LOG_META_PID].ptr;
if (metadata[LOG_META_PID].len == 1 && metadata[LOG_META_PID].ptr[0] == '-')
metadata[LOG_META_PID].len = 0;
p++;
if ((p - buf) >= buflen || *p == ' ')
goto bad_format;
metadata[LOG_META_MSGID].ptr = p;
while (*p != ' ') {
p++;
if ((p - buf) >= buflen)
goto bad_format;
}
metadata[LOG_META_MSGID].len = p - metadata[LOG_META_MSGID].ptr;
if (metadata[LOG_META_MSGID].len == 1 && metadata[LOG_META_MSGID].ptr[0] == '-')
metadata[LOG_META_MSGID].len = 0;
p++;
if ((p - buf) >= buflen || *p == ' ')
goto bad_format;
/* structured data format is:
* ex:
* '[key1=value1 key2=value2][key3=value3]'
*
* space is invalid outside [] because
* considered as the end of structured data field
*/
metadata[LOG_META_STDATA].ptr = p;
if (*p == '[') {
int elem = 0;
while (1) {
if (elem) {
/* according to rfc this char is escaped in param values */
if (*p == ']' && *(p-1) != '\\')
elem = 0;
}
else {
if (*p == '[')
elem = 1;
else if (*p == ' ')
break;
else
goto bad_format;
}
p++;
if ((p - buf) >= buflen)
goto bad_format;
}
}
else if (*p == '-') {
/* case of NILVALUE */
p++;
if ((p - buf) >= buflen || *p != ' ')
goto bad_format;
}
else
goto bad_format;
metadata[LOG_META_STDATA].len = p - metadata[LOG_META_STDATA].ptr;
if (metadata[LOG_META_STDATA].len == 1 && metadata[LOG_META_STDATA].ptr[0] == '-')
metadata[LOG_META_STDATA].len = 0;
p++;
buflen -= p - buf;
buf = p;
*size = buflen;
*message = p;
}
else if (*size > LOG_LEGACYTIME_LEN) {
int m;
/* supported header format according to rfc3164.
* ex:
* 'Jan 1 00:00:00 HOSTNAME TAG[PID]: '
* or 'Jan 1 00:00:00 HOSTNAME TAG: '
* or 'Jan 1 00:00:00 HOSTNAME '
* Note: HOSTNAME is mandatory, and day
* of month uses a single space prefix if
* less than 10 to ensure hour offset is
* always the same.
*/
/* Check month to see if it correspond to a rfc3164
* header ex 'Jan 1 00:00:00' */
for (m = 0; m < 12; m++)
if (!memcmp(monthname[m], p, 3))
break;
/* Month not found */
if (m == 12)
goto bad_format;
metadata[LOG_META_TIME] = ist2(p, LOG_LEGACYTIME_LEN);
p += LOG_LEGACYTIME_LEN;
if ((p - buf) >= buflen || *p != ' ')
goto bad_format;
p++;
if ((p - buf) >= buflen || *p == ' ')
goto bad_format;
metadata[LOG_META_HOST].ptr = p;
while (*p != ' ') {
p++;
if ((p - buf) >= buflen)
goto bad_format;
}
metadata[LOG_META_HOST].len = p - metadata[LOG_META_HOST].ptr;
/* TAG seems to no be mandatory */
p++;
buflen -= p - buf;
buf = p;
*size = buflen;
*message = buf;
if (!buflen)
return;
while (((p - buf) < buflen) && *p != ' ' && *p != ':')
p++;
/* a tag must present a trailing ':' */
if (((p - buf) >= buflen) || *p != ':')
return;
p++;
/* followed by a space */
if (((p - buf) >= buflen) || *p != ' ')
return;
/* rewind to parse tag and pid */
p = buf;
metadata[LOG_META_TAG].ptr = p;
/* we have the guarantee that ':' will be reach before size limit */
while (*p != ':') {
if (*p == '[') {
metadata[LOG_META_TAG].len = p - metadata[LOG_META_TAG].ptr;
metadata[LOG_META_PID].ptr = p + 1;
}
else if (*p == ']' && metadata[LOG_META_PID].ptr) {
if (p[1] != ':')
return;
metadata[LOG_META_PID].len = p - metadata[LOG_META_PID].ptr;
}
p++;
}
if (!metadata[LOG_META_TAG].len)
metadata[LOG_META_TAG].len = p - metadata[LOG_META_TAG].ptr;
/* let pass ':' and ' ', we still have warranty size is large enough */
p += 2;
buflen -= p - buf;
buf = p;
*size = buflen;
*message = buf;
}
return;
bad_format:
/* bad syslog format, we reset all parsed syslog fields
* but priority is kept because we are able to re-build
* this message using LOF_FORMAT_PRIO.
*/
metadata[LOG_META_TIME].len = 0;
metadata[LOG_META_HOST].len = 0;
metadata[LOG_META_TAG].len = 0;
metadata[LOG_META_PID].len = 0;
metadata[LOG_META_MSGID].len = 0;
metadata[LOG_META_STDATA].len = 0;
return;
}
/*
* UDP syslog fd handler
*/
void syslog_fd_handler(int fd)
{
static THREAD_LOCAL struct ist metadata[LOG_META_FIELDS];
ssize_t ret = 0;
struct buffer *buf = get_trash_chunk();
size_t size;
char *message;
int level;
int facility;
struct listener *l = objt_listener(fdtab[fd].owner);
int max_accept;
if(!l)
ABORT_NOW();
if (fdtab[fd].ev & FD_POLL_IN) {
if (!fd_recv_ready(fd))
return;
max_accept = l->maxaccept ? l->maxaccept : 1;
do {
/* Source address */
struct sockaddr_storage saddr = {0};
socklen_t saddrlen;
saddrlen = sizeof(saddr);
ret = recvfrom(fd, buf->area, buf->size, 0, (struct sockaddr *)&saddr, &saddrlen);
if (ret < 0) {
if (errno == EINTR)
continue;
if (errno == EAGAIN)
fd_cant_recv(fd);
goto out;
}
buf->data = ret;
/* update counters */
_HA_ATOMIC_ADD(&cum_log_messages, 1);
proxy_inc_fe_req_ctr(l, l->bind_conf->frontend);
parse_log_message(buf->area, buf->data, &level, &facility, metadata, &message, &size);
process_send_log(&l->bind_conf->frontend->logsrvs, level, facility, metadata, message, size);
} while (--max_accept);
}
out:
return;
}
/*
* IO Handler to handle message exchange with a syslog tcp client
*/
static void syslog_io_handler(struct appctx *appctx)
{
static THREAD_LOCAL struct ist metadata[LOG_META_FIELDS];
struct stream_interface *si = appctx->owner;
struct stream *s = si_strm(si);
struct proxy *frontend = strm_fe(s);
struct listener *l = strm_li(s);
struct buffer *buf = get_trash_chunk();
int max_accept;
int to_skip;
int facility;
int level;
char *message;
size_t size;
max_accept = l->maxaccept ? l->maxaccept : 1;
while (co_data(si_oc(si))) {
char c;
if (max_accept <= 0)
goto missing_budget;
max_accept--;
to_skip = co_getchar(si_oc(si), &c);
if (!to_skip)
goto missing_data;
else if (to_skip < 0)
goto cli_abort;
if (c == '<') {
/* rfc-6587, Non-Transparent-Framing: messages separated by
* a trailing LF or CR LF
*/
to_skip = co_getline(si_oc(si), buf->area, buf->size);
if (!to_skip)
goto missing_data;
else if (to_skip < 0)
goto cli_abort;
if (buf->area[to_skip - 1] != '\n')
goto parse_error;
buf->data = to_skip - 1;
/* according to rfc-6587, some devices adds CR before LF */
if (buf->data && buf->area[buf->data - 1] == '\r')
buf->data--;
}
else if ((unsigned char)(c - '1') <= 8) {
/* rfc-6587, Octet-Counting: message length in ASCII
* (first digit can not be ZERO), followed by a space
* and message length
*/
char *p = NULL;
int msglen;
to_skip = co_getword(si_oc(si), buf->area, buf->size, ' ');
if (!to_skip)
goto missing_data;
else if (to_skip < 0)
goto cli_abort;
if (buf->area[to_skip - 1] != ' ')
goto parse_error;
msglen = strtol(trash.area, &p, 10);
if (!msglen || p != &buf->area[to_skip - 1])
goto parse_error;
/* message seems too large */
if (msglen > buf->size)
goto parse_error;
msglen = co_getblk(si_oc(si), buf->area, msglen, to_skip);
if (!msglen)
goto missing_data;
else if (msglen < 0)
goto cli_abort;
buf->data = msglen;
to_skip += msglen;
}
else
goto parse_error;
co_skip(si_oc(si), to_skip);
/* update counters */
_HA_ATOMIC_ADD(&cum_log_messages, 1);
proxy_inc_fe_req_ctr(l, frontend);
parse_log_message(buf->area, buf->data, &level, &facility, metadata, &message, &size);
process_send_log(&frontend->logsrvs, level, facility, metadata, message, size);
}
missing_data:
/* we need more data to read */
si_oc(si)->flags |= CF_READ_DONTWAIT;
return;
missing_budget:
/* it may remain some stuff to do, let's retry later */
appctx_wakeup(appctx);
return;
parse_error:
if (l->counters)
_HA_ATOMIC_ADD(&l->counters->failed_req, 1);
_HA_ATOMIC_ADD(&frontend->fe_counters.failed_req, 1);
goto close;
cli_abort:
if (l->counters)
_HA_ATOMIC_ADD(&l->counters->cli_aborts, 1);
_HA_ATOMIC_ADD(&frontend->fe_counters.cli_aborts, 1);
close:
si_shutw(si);
si_shutr(si);
si_ic(si)->flags |= CF_READ_NULL;
return;
}
static struct applet syslog_applet = {
.obj_type = OBJ_TYPE_APPLET,
.name = "<SYSLOG>", /* used for logging */
.fct = syslog_io_handler,
.release = NULL,
};
/*
* Parse "log-forward" section and create corresponding sink buffer.
*
* The function returns 0 in success case, otherwise, it returns error
* flags.
*/
int cfg_parse_log_forward(const char *file, int linenum, char **args, int kwm)
{
int err_code = 0;
struct proxy *px;
char *errmsg = NULL;
const char *err = NULL;
if (strcmp(args[0], "log-forward") == 0) {
if (!*args[1]) {
ha_alert("parsing [%s:%d] : missing name for ip-forward section.\n", file, linenum);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
if (alertif_too_many_args(1, file, linenum, args, &err_code))
goto out;
err = invalid_char(args[1]);
if (err) {
ha_alert("parsing [%s:%d] : character '%c' is not permitted in '%s' name '%s'.\n",
file, linenum, *err, args[0], args[1]);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
px = log_forward_by_name(args[1]);
if (px) {
ha_alert("Parsing [%s:%d]: log-forward section '%s' has the same name as another log-forward section declared at %s:%d.\n",
file, linenum, args[1], px->conf.file, px->conf.line);
err_code |= ERR_ALERT | ERR_FATAL;
}
px = proxy_find_by_name(args[1], 0, 0);
if (px) {
ha_alert("Parsing [%s:%d]: log forward section '%s' has the same name as %s '%s' declared at %s:%d.\n",
file, linenum, args[1], proxy_type_str(px),
px->id, px->conf.file, px->conf.line);
err_code |= ERR_ALERT | ERR_FATAL;
}
px = calloc(1, sizeof *px);
if (!px) {
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
px->next = cfg_log_forward;
cfg_log_forward = px;
init_new_proxy(px);
px->conf.file = strdup(file);
px->conf.line = linenum;
px->mode = PR_MODE_SYSLOG;
px->last_change = now.tv_sec;
px->cap = PR_CAP_FE;
px->maxconn = 10;
px->timeout.client = TICK_ETERNITY;
px->accept = frontend_accept;
px->default_target = &syslog_applet.obj_type;
px->id = strdup(args[1]);
}
else if (!strcmp(args[0], "maxconn")) { /* maxconn */
if (warnifnotcap(cfg_log_forward, PR_CAP_FE, file, linenum, args[0], " Maybe you want 'fullconn' instead ?"))
err_code |= ERR_WARN;
if (*(args[1]) == 0) {
ha_alert("parsing [%s:%d] : '%s' expects an integer argument.\n", file, linenum, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
cfg_log_forward->maxconn = atol(args[1]);
if (alertif_too_many_args(1, file, linenum, args, &err_code))
goto out;
}
else if (!strcmp(args[0], "backlog")) { /* backlog */
if (warnifnotcap(cfg_log_forward, PR_CAP_FE, file, linenum, args[0], NULL))
err_code |= ERR_WARN;
if (*(args[1]) == 0) {
ha_alert("parsing [%s:%d] : '%s' expects an integer argument.\n", file, linenum, args[0]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
cfg_log_forward->backlog = atol(args[1]);
if (alertif_too_many_args(1, file, linenum, args, &err_code))
goto out;
}
else if (strcmp(args[0], "bind") == 0) {
int cur_arg;
static int kws_dumped;
struct bind_conf *bind_conf;
struct bind_kw *kw;
struct listener *l;
cur_arg = 1;
bind_conf = bind_conf_alloc(cfg_log_forward, file, linenum,
NULL, xprt_get(XPRT_RAW));
if (!bind_conf) {
ha_alert("parsing [%s:%d] : out of memory error.", file, linenum);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if (!str2listener(args[1], cfg_log_forward, bind_conf, file, linenum, &errmsg)) {
if (errmsg && *errmsg) {
indent_msg(&errmsg, 2);
ha_alert("parsing [%s:%d] : '%s %s' : %s\n", file, linenum, args[0], args[1], errmsg);
}
else {
ha_alert("parsing [%s:%d] : '%s %s' : error encountered while parsing listening address %s.\n",
file, linenum, args[0], args[1], args[2]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
}
list_for_each_entry(l, &bind_conf->listeners, by_bind) {
l->maxaccept = global.tune.maxaccept ? global.tune.maxaccept : 64;
l->accept = session_accept_fd;
l->analysers |= cfg_log_forward->fe_req_ana;
l->default_target = cfg_log_forward->default_target;
global.maxsock++;
}
cur_arg++;
while (*args[cur_arg] && (kw = bind_find_kw(args[cur_arg]))) {
int ret;
ret = kw->parse(args, cur_arg, cfg_log_forward, bind_conf, &errmsg);
err_code |= ret;
if (ret) {
if (errmsg && *errmsg) {
indent_msg(&errmsg, 2);
ha_alert("parsing [%s:%d] : %s\n", file, linenum, errmsg);
}
else
ha_alert("parsing [%s:%d]: error encountered while processing '%s'\n",
file, linenum, args[cur_arg]);
if (ret & ERR_FATAL)
goto out;
}
cur_arg += 1 + kw->skip;
}
if (*args[cur_arg] != 0) {
char *kws = NULL;
if (!kws_dumped) {
kws_dumped = 1;
bind_dump_kws(&kws);
indent_msg(&kws, 4);
}
ha_alert("parsing [%s:%d] : unknown keyword '%s' in '%s' section.%s%s\n",
file, linenum, args[cur_arg], cursection,
kws ? " Registered keywords :" : "", kws ? kws: "");
free(kws);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
}
else if (strcmp(args[0], "dgram-bind") == 0) {
int cur_arg;
static int kws_dumped;
struct bind_conf *bind_conf;
struct bind_kw *kw;
struct listener *l;
cur_arg = 1;
bind_conf = bind_conf_alloc(cfg_log_forward, file, linenum,
NULL, xprt_get(XPRT_RAW));
if (!str2receiver(args[1], cfg_log_forward, bind_conf, file, linenum, &errmsg)) {
if (errmsg && *errmsg) {
indent_msg(&errmsg, 2);
ha_alert("parsing [%s:%d] : '%s %s' : %s\n", file, linenum, args[0], args[1], errmsg);
}
else {
ha_alert("parsing [%s:%d] : '%s %s' : error encountered while parsing listening address %s.\n",
file, linenum, args[0], args[1], args[2]);
}
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
list_for_each_entry(l, &bind_conf->listeners, by_bind) {
/* the fact that the sockets are of type dgram is guaranteed by str2receiver() */
l->maxaccept = global.tune.maxaccept ? global.tune.maxaccept : 64;
l->rx.iocb = syslog_fd_handler;
global.maxsock++;
}
cur_arg++;
while (*args[cur_arg] && (kw = bind_find_kw(args[cur_arg]))) {
int ret;
ret = kw->parse(args, cur_arg, cfg_log_forward, bind_conf, &errmsg);
err_code |= ret;
if (ret) {
if (errmsg && *errmsg) {
indent_msg(&errmsg, 2);
ha_alert("parsing [%s:%d] : %s\n", file, linenum, errmsg);
}
else
ha_alert("parsing [%s:%d]: error encountered while processing '%s'\n",
file, linenum, args[cur_arg]);
if (ret & ERR_FATAL)
goto out;
}
cur_arg += 1 + kw->skip;
}
if (*args[cur_arg] != 0) {
char *kws = NULL;
if (!kws_dumped) {
kws_dumped = 1;
bind_dump_kws(&kws);
indent_msg(&kws, 4);
}
ha_alert("parsing [%s:%d] : unknown keyword '%s' in '%s' section.%s%s\n",
file, linenum, args[cur_arg], cursection,
kws ? " Registered keywords :" : "", kws ? kws: "");
free(kws);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
}
else if (strcmp(args[0], "log") == 0) {
if (!parse_logsrv(args, &cfg_log_forward->logsrvs, (kwm == KWM_NO), &errmsg)) {
ha_alert("parsing [%s:%d] : %s : %s\n", file, linenum, args[0], errmsg);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
}
else if (strcmp(args[0], "timeout") == 0) {
const char *res;
unsigned timeout;
if (strcmp(args[1], "client") != 0) {
ha_alert("parsing [%s:%d] : unknown keyword '%s %s' in log-forward section.\n", file, linenum, args[0], args[1]);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
if (*args[2] == 0) {
ha_alert("parsing [%s:%d] : missing timeout client value.\n", file, linenum);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
res = parse_time_err(args[2], &timeout, TIME_UNIT_MS);
if (res == PARSE_TIME_OVER) {
memprintf(&errmsg, "timer overflow in argument '%s' to 'timeout client' (maximum value is 2147483647 ms or ~24.8 days)", args[2]);
}
else if (res == PARSE_TIME_UNDER) {
memprintf(&errmsg, "timer underflow in argument '%s' to 'timeout client' (minimum non-null value is 1 ms)", args[2]);
}
else if (res) {
memprintf(&errmsg, "unexpected character '%c' in 'timeout client'", *res);
return -1;
}
if (res) {
ha_alert("parsing [%s:%d] : %s : %s\n", file, linenum, args[0], errmsg);
err_code |= ERR_ALERT | ERR_FATAL;
goto out;
}
cfg_log_forward->timeout.client = MS_TO_TICKS(timeout);
}
else {
ha_alert("parsing [%s:%d] : unknown keyword '%s' in log-forward section.\n", file, linenum, args[0]);
err_code |= ERR_ALERT | ERR_ABORT;
goto out;
}
out:
return err_code;
}
/* parse the "show startup-logs" command, returns 1 if a message is returned, otherwise zero */
static int cli_parse_show_startup_logs(char **args, char *payload, struct appctx *appctx, void *private)
{
if (!cli_has_level(appctx, ACCESS_LVL_OPER))
return 1;
if (!startup_logs)
return cli_msg(appctx, LOG_INFO, "\n"); // nothing to print
return ring_attach_cli(startup_logs, appctx);
}
/* register cli keywords */
static struct cli_kw_list cli_kws = {{ },{
{ { "show", "startup-logs", NULL },
"show startup-logs : report logs emitted during HAProxy startup", cli_parse_show_startup_logs, NULL, NULL },
{{},}
}};
INITCALL1(STG_REGISTER, cli_register_kw, &cli_kws);
/* config parsers for this section */
REGISTER_CONFIG_SECTION("log-forward", cfg_parse_log_forward, NULL);
REGISTER_PER_THREAD_ALLOC(init_log_buffers);
REGISTER_PER_THREAD_FREE(deinit_log_buffers);
/*
* Local variables:
* c-indent-level: 8
* c-basic-offset: 8
* End:
*/
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