/* * General logging functions. * * Copyright 2000-2008 Willy Tarreau * * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef USE_OPENSSL #include #endif 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_HTTP, LW_BYTES, NULL }, /* Unique ID */ { "ST", LOG_FMT_STATUS, PR_MODE_HTTP, LW_RESP, NULL }, /* status code */ { "T", LOG_FMT_DATEGMT, PR_MODE_TCP, LW_INIT, NULL }, /* date GMT */ { "Tc", LOG_FMT_TC, PR_MODE_TCP, LW_BYTES, NULL }, /* Tc */ { "Tl", LOG_FMT_DATELOCAL, PR_MODE_TCP, LW_INIT, NULL }, /* date local timezone */ { "Tq", LOG_FMT_TQ, PR_MODE_HTTP, LW_BYTES, NULL }, /* Tq */ { "Tr", LOG_FMT_TR, PR_MODE_HTTP, LW_BYTES, NULL }, /* Tr */ { "Ts", LOG_FMT_TS, PR_MODE_TCP, LW_INIT, NULL }, /* timestamp GMT */ { "Tt", LOG_FMT_TT, PR_MODE_TCP, LW_BYTES, NULL }, /* Tt */ { "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, NULL }, /* client ip */ { "cp", LOG_FMT_CLIENTPORT, PR_MODE_TCP, LW_CLIP, 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, NULL }, /* frontend ip */ { "fp", LOG_FMT_FRONTENDPORT, PR_MODE_TCP, LW_FRTIP, NULL }, /* frontend port */ { "ft", LOG_FMT_FRONTEND_XPRT, PR_MODE_TCP, LW_INIT, NULL }, /* frontend with transport mode */ { "hr", LOG_FMT_HDRREQUEST, PR_MODE_HTTP, LW_REQHDR, NULL }, /* header request */ { "hrl", LOG_FMT_HDRREQUESTLIST, PR_MODE_HTTP, LW_REQHDR, NULL }, /* header request list */ { "hs", LOG_FMT_HDRRESPONS, PR_MODE_HTTP, LW_RSPHDR, NULL }, /* header response */ { "hsl", LOG_FMT_HDRRESPONSLIST, PR_MODE_HTTP, LW_RSPHDR, NULL }, /* header response list */ { "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_HTTP, LW_REQ, NULL }, /* HTTP request counter */ { "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 */ { "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, NULL, "ci" }, /* client ip */ { "Cp", LOG_FMT_CLIENTPORT, PR_MODE_TCP, LW_CLIP, NULL, "cp" }, /* client port */ { "Fi", LOG_FMT_FRONTENDIP, PR_MODE_TCP, LW_FRTIP, NULL, "fi" }, /* frontend ip */ { "Fp", LOG_FMT_FRONTENDPORT, PR_MODE_TCP, LW_FRTIP, 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 [%t] %ft %b/%s %Tq/%Tw/%Tc/%Tr/%Tt %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 - - [%T] %r %ST %B \"\" \"\" %cp %ms %ft %b %s %Tq %Tw %Tc %Tr %Tt %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; /* This is a global syslog line, common to all outgoing messages. It begins * with the syslog tag and the date that are updated by update_log_hdr(). */ static char logline[MAX_SYSLOG_LEN]; 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 }, { 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_UIF: return "unique-id-format"; case ARGC_HRQ: return "http-request"; case ARGC_HRS: return "http-response"; case ARGC_STK: return "stick"; case ARGC_TRK: return "track-sc"; break; case ARGC_RDR: return "redirect"; break; case ARGC_ACL: return "acl"; break; default: return "log-format"; } } /* * 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 */ int parse_logformat_var_args(char *args, struct logformat_node *node) { int i = 0; int end = 0; int flags = 0; // 1 = + 2 = - char *sp = NULL; // start pointer if (args == NULL) return 1; 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 0; } /* * Parse a variable '%varname' or '%{args}varname' in log-format. The caller * must pass the args part in the pointer with its length in , * and varname with its length in and respectively. is * ignored when arg_len is 0. Neither nor may be null. */ int parse_logformat_var(char *arg, int arg_len, char *var, int var_len, struct proxy *curproxy, struct list *list_format, int *defoptions) { int j; struct logformat_node *node; 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(struct logformat_node)); node->type = logformat_keywords[j].type; node->options = *defoptions; if (arg_len) { node->arg = my_strndup(arg, arg_len); parse_logformat_var_args(node->arg, node); } 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) { return -1; } curproxy->to_log |= logformat_keywords[j].lw; LIST_ADDQ(list_format, &node->list); } if (logformat_keywords[j].replace_by) 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 0; } else { Warning("parsing [%s:%d] : '%s' : format variable '%s' is reserved for HTTP mode.\n", curproxy->conf.args.file, curproxy->conf.args.line, fmt_directive(curproxy), logformat_keywords[j].name); return -1; } } } j = var[var_len]; var[var_len] = 0; Warning("parsing [%s:%d] : no such format variable '%s' in '%s'. If you wanted to emit the '%%' character verbatim, you need to use '%%%%' in log-format expressions.\n", curproxy->conf.args.file, curproxy->conf.args.line, var, fmt_directive(curproxy)); var[var_len] = j; return -1; } /* * 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. * */ void add_to_logformat_list(char *start, char *end, int type, struct list *list_format) { char *str; if (type == LF_TEXT) { /* type text */ struct logformat_node *node = calloc(1, sizeof(struct logformat_node)); str = calloc(end - start + 1, 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(struct logformat_node)); node->type = LOG_FMT_SEPARATOR; LIST_ADDQ(list_format, &node->list); } } /* * Parse the sample fetch expression and add a node to 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. */ void add_sample_to_logformat_list(char *text, char *arg, int arg_len, struct proxy *curpx, struct list *list_format, int options, int cap) { char *cmd[2]; struct sample_expr *expr; struct logformat_node *node; int cmd_arg; char *errmsg = NULL; cmd[0] = text; cmd[1] = ""; cmd_arg = 0; expr = sample_parse_expr(cmd, &cmd_arg, &errmsg, &curpx->conf.args); if (!expr) { Warning("parsing [%s:%d] : '%s' : sample fetch <%s> failed with : %s\n", curpx->conf.args.file, curpx->conf.args.line, fmt_directive(curpx), text, errmsg); return; } node = calloc(1, sizeof(struct logformat_node)); node->type = LOG_FMT_EXPR; node->expr = expr; node->options = options; if (arg_len) { node->arg = my_strndup(arg, arg_len); parse_logformat_var_args(node->arg, node); } 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)) Warning("parsing [%s:%d] : '%s' : sample fetch <%s> may not be reliably used here because it needs '%s' which is not available here.\n", curpx->conf.args.file, curpx->conf.args.line, fmt_directive(curpx), text, sample_src_names(expr->fetch->use)); /* check if we need to allocate an hdr_idx 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 flag 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; LIST_ADDQ(list_format, &node->list); } /* * 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. * * str: 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 */ void parse_logformat_string(const char *fmt, struct proxy *curproxy, struct list *list_format, int options, int cap) { 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); curproxy->to_log |= LW_INIT; /* flush the list first. */ list_for_each_entry_safe(tmplf, back, list_format, list) { LIST_DEL(&tmplf->list); 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 prinicple 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 litteral (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 */ Warning("parsing [%s:%d] : Fixed missing '%%' before '%c' at position %d in %s line : '%s'. Please use '%%%%' when you need the '%%' character in a log-format expression.\n", curproxy->conf.args.file, curproxy->conf.args.line, *str, (int)(str - backfmt), fmt_directive(curproxy), fmt); } else cformat = LF_INIT; // handle other cases of litterals 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; } Warning("parsing [%s:%d] : Skipping isolated argument in '%s' line : '%%{%s}'\n", curproxy->conf.args.file, curproxy->conf.args.line, fmt_directive(curproxy), arg); cformat = LF_INIT; break; case LF_STEXPR: // text immediately following '%[' if (*str == ']') { // end of arg cformat = LF_EDEXPR; var_len = str - var; *str = 0; // needed for parsing the expression } 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 ' ': cformat = LF_SEPARATOR; break; case 0 : cformat = LF_END; break; default : cformat = LF_TEXT; break; } } if (cformat != pformat || pformat == LF_SEPARATOR) { switch (pformat) { case LF_VAR: parse_logformat_var(arg, arg_len, var, var_len, curproxy, list_format, &options); break; case LF_STEXPR: add_sample_to_logformat_list(var, arg, arg_len, curproxy, list_format, options, cap); break; case LF_TEXT: case LF_SEPARATOR: add_to_logformat_list(sp, str, pformat, list_format); 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) Warning("parsing [%s:%d] : Ignoring end of truncated '%s' line after '%s'\n", curproxy->conf.args.file, curproxy->conf.args.line, fmt_directive(curproxy), var ? var : arg ? arg : "%"); free(backfmt); } /* * Displays the message on stderr with the date and pid. Overrides the quiet * mode during startup. */ void Alert(const char *fmt, ...) { va_list argp; struct tm tm; if (!(global.mode & MODE_QUIET) || (global.mode & (MODE_VERBOSE | MODE_STARTING))) { va_start(argp, fmt); get_localtime(date.tv_sec, &tm); fprintf(stderr, "[ALERT] %03d/%02d%02d%02d (%d) : ", tm.tm_yday, tm.tm_hour, tm.tm_min, tm.tm_sec, (int)getpid()); vfprintf(stderr, fmt, argp); fflush(stderr); va_end(argp); } } /* * Displays the message on stderr with the date and pid. */ void Warning(const char *fmt, ...) { va_list argp; struct tm tm; if (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) { va_start(argp, fmt); get_localtime(date.tv_sec, &tm); fprintf(stderr, "[WARNING] %03d/%02d%02d%02d (%d) : ", tm.tm_yday, tm.tm_hour, tm.tm_min, tm.tm_sec, (int)getpid()); vfprintf(stderr, fmt, argp); fflush(stderr); va_end(argp); } } /* * Displays the message on 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 level for 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 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; } /* * Write a string in the log string * Take cares of quote options * * Return the adress of the \0 character, or NULL on error */ char *lf_text_len(char *dst, const char *src, size_t len, size_t size, 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; 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, struct logformat_node *node) { return lf_text_len(dst, src, size, size, node); } /* * Write a IP adress to the log string * +X option write in hexadecimal notation, most signifant byte on the left */ char *lf_ip(char *dst, struct sockaddr *sockaddr, size_t size, struct logformat_node *node) { char *ret = dst; int iret; char pn[INET6_ADDRSTRLEN]; if (node->options & LOG_OPT_HEXA) { const unsigned char *addr = (const 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]); 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 signifant byte on the left */ char *lf_port(char *dst, struct sockaddr *sockaddr, size_t size, 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; } /* Re-generate the syslog header at the beginning of logline once a second and * return the pointer to the first character after the header. */ static char *update_log_hdr() { static long tvsec; static char *dataptr = NULL; /* backup of last end of header, NULL first time */ if (unlikely(date.tv_sec != tvsec || dataptr == NULL)) { /* this string is rebuild only once a second */ struct tm tm; int hdr_len; tvsec = date.tv_sec; get_localtime(tvsec, &tm); hdr_len = snprintf(logline, MAX_SYSLOG_LEN, "<<<<>%s %2d %02d:%02d:%02d %s%s[%d]: ", monthname[tm.tm_mon], tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec, global.log_send_hostname ? global.log_send_hostname : "", global.log_tag, pid); /* WARNING: depending upon implementations, snprintf may return * either -1 or the number of bytes that would be needed to store * the total message. In both cases, we must adjust it. */ if (hdr_len < 0 || hdr_len > MAX_SYSLOG_LEN) hdr_len = MAX_SYSLOG_LEN; dataptr = logline + hdr_len; } return dataptr; } /* * This function adds a header to the message and 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; char *dataptr; int data_len; if (level < 0 || format == NULL) return; dataptr = update_log_hdr(); /* update log header and skip it */ data_len = dataptr - logline; va_start(argp, format); data_len += vsnprintf(dataptr, logline + sizeof(logline) - dataptr, format, argp); if (data_len < 0 || data_len > MAX_SYSLOG_LEN) data_len = MAX_SYSLOG_LEN; va_end(argp); __send_log(p, level, logline, data_len); } /* * This function sends a syslog message. * It doesn't care about errors nor does it report them. * It overrides the last byte (message[size-1]) with an LF character. */ void __send_log(struct proxy *p, int level, char *message, size_t size) { static int logfdunix = -1; /* syslog to AF_UNIX socket */ static int logfdinet = -1; /* syslog to AF_INET socket */ static char *dataptr = NULL; int fac_level; struct list *logsrvs = NULL; struct logsrv *tmp = NULL; int nblogger; char *log_ptr; dataptr = message; if (p == NULL) { if (!LIST_ISEMPTY(&global.logsrvs)) { logsrvs = &global.logsrvs; } } else { if (!LIST_ISEMPTY(&p->logsrvs)) { logsrvs = &p->logsrvs; } } if (!logsrvs) return; message[size - 1] = '\n'; /* Lazily set up syslog sockets for protocol families of configured * syslog servers. */ nblogger = 0; list_for_each_entry(tmp, logsrvs, list) { const struct logsrv *logsrv = tmp; int proto, *plogfd; if (logsrv->addr.ss_family == AF_UNIX) { proto = 0; plogfd = &logfdunix; } else { proto = IPPROTO_UDP; plogfd = &logfdinet; } if (*plogfd >= 0) { /* socket already created. */ continue; } if ((*plogfd = socket(logsrv->addr.ss_family, SOCK_DGRAM, proto)) < 0) { Alert("socket for logger #%d failed: %s (errno=%d)\n", nblogger + 1, strerror(errno), errno); return; } /* 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); nblogger++; } /* Send log messages to syslog server. */ nblogger = 0; list_for_each_entry(tmp, logsrvs, list) { const struct logsrv *logsrv = tmp; int *plogfd = logsrv->addr.ss_family == AF_UNIX ? &logfdunix : &logfdinet; int sent; /* we can filter the level of the messages that are sent to each logger */ if (level > logsrv->level) continue; /* For each target, we may have a different facility. * We can also have a different log level for each message. * This induces variations in the message header length. * Since we don't want to recompute it each time, nor copy it every * time, we only change the facility in the pre-computed header, * and we change the pointer to the header accordingly. */ fac_level = (logsrv->facility << 3) + MAX(level, logsrv->minlvl); log_ptr = dataptr + 3; /* last digit of the log level */ do { *log_ptr = '0' + fac_level % 10; fac_level /= 10; log_ptr--; } while (fac_level && log_ptr > dataptr); *log_ptr = '<'; sent = sendto(*plogfd, log_ptr, size - (log_ptr - dataptr), MSG_DONTWAIT | MSG_NOSIGNAL, (struct sockaddr *)&logsrv->addr, get_addr_len(&logsrv->addr)); if (sent < 0) { Alert("sendto logger #%d failed: %s (errno=%d)\n", nblogger, strerror(errno), errno); } nblogger++; } } extern fd_set hdr_encode_map[]; extern fd_set url_encode_map[]; 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) /* Builds a log line in based on , and stops before reaching * 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. */ int build_logline(struct session *s, char *dst, size_t maxsize, struct list *list_format) { struct proxy *fe = s->fe; struct proxy *be = s->be; struct http_txn *txn = &s->txn; char *uri; struct tm tm; int t_request; int hdr; int last_isspace = 1; char *tmplog; char *ret; int iret; struct logformat_node *tmp; /* FIXME: let's limit ourselves to frontend logging for now. */ t_request = -1; if (tv_isge(&s->logs.tv_request, &s->logs.tv_accept)) t_request = tv_ms_elapsed(&s->logs.tv_accept, &s->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; 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_string(be, s, txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL, tmp->expr); if (!key && (tmp->options & LOG_OPT_RES_CAP)) key = sample_fetch_string(be, s, txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL, tmp->expr); ret = lf_text_len(tmplog, key ? key->data.str.str : NULL, key ? key->data.str.len : 0, dst + maxsize - tmplog, tmp); if (ret == 0) goto out; tmplog = ret; last_isspace = 0; break; case LOG_FMT_CLIENTIP: // %ci conn = objt_conn(s->req->prod->end); if (conn) ret = lf_ip(tmplog, (struct sockaddr *)&conn->addr.from, 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(s->req->prod->end); if (conn) { if (conn->addr.from.ss_family == AF_UNIX) { ret = ltoa_o(s->listener->luid, tmplog, dst + maxsize - tmplog); } else { ret = lf_port(tmplog, (struct sockaddr *)&conn->addr.from, 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(s->req->prod->end); if (conn) { conn_get_to_addr(conn); ret = lf_ip(tmplog, (struct sockaddr *)&conn->addr.to, 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(s->req->prod->end); if (conn) { conn_get_to_addr(conn); if (conn->addr.to.ss_family == AF_UNIX) ret = ltoa_o(s->listener->luid, tmplog, dst + maxsize - tmplog); else ret = lf_port(tmplog, (struct sockaddr *)&conn->addr.to, 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 conn = objt_conn(s->req->cons->end); if (conn) ret = lf_ip(tmplog, (struct sockaddr *)&conn->addr.from, 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 conn = objt_conn(s->req->cons->end); if (conn) ret = lf_port(tmplog, (struct sockaddr *)&conn->addr.from, 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 conn = objt_conn(s->req->cons->end); if (conn) ret = lf_ip(tmplog, (struct sockaddr *)&conn->addr.to, 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 conn = objt_conn(s->req->cons->end); if (conn) ret = lf_port(tmplog, (struct sockaddr *)&conn->addr.to, 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 get_localtime(s->logs.accept_date.tv_sec, &tm); ret = date2str_log(tmplog, &tm, &(s->logs.accept_date), dst + maxsize - tmplog); if (ret == NULL) goto out; tmplog = ret; last_isspace = 0; break; case LOG_FMT_DATEGMT: // %T get_gmtime(s->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_DATELOCAL: // %Tl get_localtime(s->logs.accept_date.tv_sec, &tm); ret = localdate2str_log(tmplog, &tm, dst + maxsize - tmplog); if (ret == NULL) goto out; tmplog = ret; last_isspace = 0; break; case LOG_FMT_TS: // %Ts get_gmtime(s->logs.accept_date.tv_sec, &tm); if (tmp->options & LOG_OPT_HEXA) { iret = snprintf(tmplog, dst + maxsize - tmplog, "%04X", (unsigned int)s->logs.accept_date.tv_sec); if (iret < 0 || iret > dst + maxsize - tmplog) goto out; last_isspace = 0; tmplog += iret; } else { ret = ltoa_o(s->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)s->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)s->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; #ifdef USE_OPENSSL if (s->listener->xprt == &ssl_sock) LOGCHAR('~'); #endif 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(s->si[0].end); if (conn) { if (s->listener->xprt == &ssl_sock) 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(s->si[0].end); if (conn) { if (s->listener->xprt == &ssl_sock) 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->target)) { case OBJ_TYPE_SERVER: src = objt_server(s->target)->id; break; case OBJ_TYPE_APPLET: src = objt_applet(s->target)->name; break; default: src = ""; break; } ret = lf_text(tmplog, src, dst + maxsize - tmplog, tmp); if (ret == NULL) goto out; tmplog = ret; last_isspace = 0; break; case LOG_FMT_TQ: // %Tq 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((s->logs.t_queue >= 0) ? s->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((s->logs.t_connect >= 0) ? s->logs.t_connect - s->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((s->logs.t_data >= 0) ? s->logs.t_data - s->logs.t_connect : -1, tmplog, dst + maxsize - tmplog); if (ret == NULL) goto out; tmplog = ret; last_isspace = 0; break; case LOG_FMT_TT: // %Tt if (!(fe->to_log & LW_BYTES)) LOGCHAR('+'); ret = ltoa_o(s->logs.t_close, tmplog, dst + maxsize - tmplog); if (ret == NULL) goto out; tmplog = ret; last_isspace = 0; break; case LOG_FMT_STATUS: // %ST ret = ltoa_o(txn->status, 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(s->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(s->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->cli_cookie; 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->srv_cookie; 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 & SN_ERR_MASK) >> SN_ERR_SHIFT]); LOGCHAR(sess_fin_state[(s->flags & SN_FINST_MASK) >> SN_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 & SN_ERR_MASK) >> SN_ERR_SHIFT]); LOGCHAR(sess_fin_state[(s->flags & SN_FINST_MASK) >> SN_FINST_SHIFT]); LOGCHAR((be->ck_opts & PR_CK_ANY) ? sess_cookie[(txn->flags & TX_CK_MASK) >> TX_CK_SHIFT] : '-'); LOGCHAR((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->target) ? 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 & SN_REDISP) LOGCHAR('+'); ret = ltoa_o((s->req->cons->conn_retries>0) ? (be->conn_retries - s->req->cons->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(s->logs.srv_queue_size, tmplog, dst + maxsize - tmplog); if (ret == NULL) goto out; tmplog = ret; last_isspace = 0; break; case LOG_FMT_BCKQUEUE: // %bq ret = ltoa_o(s->logs.prx_queue_size, 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 && txn->req.cap) { if (tmp->options & LOG_OPT_QUOTE) LOGCHAR('"'); LOGCHAR('{'); for (hdr = 0; hdr < fe->nb_req_cap; hdr++) { if (hdr) LOGCHAR('|'); if (txn->req.cap[hdr] != NULL) { ret = encode_string(tmplog, dst + maxsize, '#', hdr_encode_map, txn->req.cap[hdr]); if (ret == NULL || *ret != '\0') goto out; tmplog = ret; } } LOGCHAR('}'); if (tmp->options & LOG_OPT_QUOTE) LOGCHAR('"'); last_isspace = 0; if (tmp->options & LOG_OPT_QUOTE) LOGCHAR('"'); } break; case LOG_FMT_HDRREQUESTLIST: // %hrl /* request header list */ if (fe->nb_req_cap && txn->req.cap) { for (hdr = 0; hdr < fe->nb_req_cap; hdr++) { if (hdr > 0) LOGCHAR(' '); if (tmp->options & LOG_OPT_QUOTE) LOGCHAR('"'); if (txn->req.cap[hdr] != NULL) { ret = encode_string(tmplog, dst + maxsize, '#', hdr_encode_map, txn->req.cap[hdr]); 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 && txn->rsp.cap) { if (tmp->options & LOG_OPT_QUOTE) LOGCHAR('"'); LOGCHAR('{'); for (hdr = 0; hdr < fe->nb_rsp_cap; hdr++) { if (hdr) LOGCHAR('|'); if (txn->rsp.cap[hdr] != NULL) { ret = encode_string(tmplog, dst + maxsize, '#', hdr_encode_map, txn->rsp.cap[hdr]); 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 && txn->rsp.cap) { for (hdr = 0; hdr < fe->nb_rsp_cap; hdr++) { if (hdr > 0) LOGCHAR(' '); if (tmp->options & LOG_OPT_QUOTE) LOGCHAR('"'); if (txn->rsp.cap[hdr] != NULL) { ret = encode_string(tmplog, dst + maxsize, '#', hdr_encode_map, txn->rsp.cap[hdr]); 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->uri ? txn->uri : ""; ret = encode_string(tmplog, dst + maxsize, '#', url_encode_map, uri); 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", global.req_count++); if (iret < 0 || iret > dst + maxsize - tmplog) goto out; last_isspace = 0; tmplog += iret; } else { ret = ltoa_o(global.req_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; src = s->unique_id; if (src) ret = lf_text(tmplog, src, 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 session when we have enough info about it. * Will not log if the frontend has no log defined. */ void sess_log(struct session *s) { char *tmplog; int size, err, level; /* if we don't want to log normal traffic, return now */ err = (s->flags & SN_REDISP) || ((s->flags & SN_ERR_MASK) > SN_ERR_LOCAL) || (((s->flags & SN_ERR_MASK) == SN_ERR_NONE) && (s->req->cons->conn_retries != s->be->conn_retries)) || ((s->fe->mode == PR_MODE_HTTP) && s->txn.status >= 500); if (!err && (s->fe->options2 & PR_O2_NOLOGNORM)) return; if (LIST_ISEMPTY(&s->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 && (s->fe->options2 & PR_O2_LOGERRORS)) level = LOG_ERR; } /* if unique-id was not generated */ if (!s->unique_id && !LIST_ISEMPTY(&s->fe->format_unique_id)) { if ((s->unique_id = pool_alloc2(pool2_uniqueid)) != NULL) build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id); } tmplog = update_log_hdr(); size = tmplog - logline; size += build_logline(s, tmplog, sizeof(logline) - size, &s->fe->logformat); if (size > 0) { __send_log(s->fe, level, logline, size + 1); s->logs.logwait = 0; } } /* * Local variables: * c-indent-level: 8 * c-basic-offset: 8 * End: */