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Diffstat (limited to 'src/log.c')
| -rw-r--r-- | src/log.c | 521 |
1 files changed, 521 insertions, 0 deletions
diff --git a/src/log.c b/src/log.c new file mode 100644 index 0000000..facbd4a --- /dev/null +++ b/src/log.c @@ -0,0 +1,521 @@ +/*- + * Copyright (c) 1997 Brian Somers <brian@Awfulhak.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD: src/usr.sbin/ppp/log.c,v 1.53.34.1 2010/12/21 17:10:29 kensmith Exp $ + */ + +#include <sys/types.h> + +#include <ctype.h> +#include <stdarg.h> +#include <stdio.h> +#include <string.h> +#include <syslog.h> +#include <termios.h> + +#include "defs.h" +#include "command.h" +#include "mbuf.h" +#include "log.h" +#include "descriptor.h" +#include "prompt.h" + +static const char *const LogNames[] = { + "Async", + "CBCP", + "CCP", + "Chat", + "Command", + "Connect", + "Debug", + "DNS", + "Filter", /* Log discarded packets */ + "HDLC", + "ID0", + "IPCP", + "IPV6CP", + "LCP", + "LQM", + "Phase", + "Physical", + "Radius", + "Sync", + "TCP/IP", + "Timer", + "Tun", + "Warning", + "Error", + "Alert" +}; + +#define MSK(n) (1<<((n)-1)) + +static u_long LogMask = MSK(LogPHASE); +static u_long LogMaskLocal = MSK(LogERROR) | MSK(LogALERT) | MSK(LogWARN); +static int LogTunno = -1; +static struct prompt *promptlist; /* Where to log local stuff */ +struct prompt *log_PromptContext; +int log_PromptListChanged; + +struct prompt * +log_PromptList() +{ + return promptlist; +} + +void +log_RegisterPrompt(struct prompt *prompt) +{ + prompt->next = promptlist; + promptlist = prompt; + prompt->active = 1; + log_DiscardAllLocal(&prompt->logmask); +} + +void +log_ActivatePrompt(struct prompt *prompt) +{ + prompt->active = 1; + LogMaskLocal |= prompt->logmask; +} + +static void +LogSetMaskLocal(void) +{ + struct prompt *p; + + LogMaskLocal = MSK(LogERROR) | MSK(LogALERT) | MSK(LogWARN); + for (p = promptlist; p; p = p->next) + LogMaskLocal |= p->logmask; +} + +void +log_DeactivatePrompt(struct prompt *prompt) +{ + if (prompt->active) { + prompt->active = 0; + LogSetMaskLocal(); + } +} + +void +log_UnRegisterPrompt(struct prompt *prompt) +{ + if (prompt) { + struct prompt **p; + + for (p = &promptlist; *p; p = &(*p)->next) + if (*p == prompt) { + *p = prompt->next; + prompt->next = NULL; + break; + } + LogSetMaskLocal(); + log_PromptListChanged++; + } +} + +void +log_DestroyPrompts(struct server *s) +{ + struct prompt *p, *pn, *pl; + + p = promptlist; + pl = NULL; + while (p) { + pn = p->next; + if (s && p->owner == s) { + if (pl) + pl->next = p->next; + else + promptlist = p->next; + p->next = NULL; + prompt_Destroy(p, 1); + } else + pl = p; + p = pn; + } +} + +void +log_DisplayPrompts() +{ + struct prompt *p; + + for (p = promptlist; p; p = p->next) + prompt_Required(p); +} + +void +log_WritePrompts(struct datalink *dl, const char *fmt,...) +{ + va_list ap; + struct prompt *p; + + va_start(ap, fmt); + for (p = promptlist; p; p = p->next) + if (prompt_IsTermMode(p, dl)) + prompt_vPrintf(p, fmt, ap); + va_end(ap); +} + +void +log_SetTtyCommandMode(struct datalink *dl) +{ + struct prompt *p; + + for (p = promptlist; p; p = p->next) + if (prompt_IsTermMode(p, dl)) + prompt_TtyCommandMode(p); +} + +static int +syslogLevel(int lev) +{ + switch (lev) { + case LogLOG: + return LOG_INFO; + case LogDEBUG: + case LogTIMER: + return LOG_DEBUG; + case LogWARN: + return LOG_WARNING; + case LogERROR: + return LOG_ERR; + case LogALERT: + return LOG_ALERT; + } + return lev >= LogMIN && lev <= LogMAX ? LOG_INFO : 0; +} + +const char * +log_Name(int id) +{ + if (id == LogLOG) + return "LOG"; + return id < LogMIN || id > LogMAX ? "Unknown" : LogNames[id - 1]; +} + +void +log_Keep(int id) +{ + if (id >= LogMIN && id <= LogMAXCONF) + LogMask |= MSK(id); +} + +void +log_KeepLocal(int id, u_long *mask) +{ + if (id >= LogMIN && id <= LogMAXCONF) { + LogMaskLocal |= MSK(id); + *mask |= MSK(id); + } +} + +void +log_Discard(int id) +{ + if (id >= LogMIN && id <= LogMAXCONF) + LogMask &= ~MSK(id); +} + +void +log_DiscardLocal(int id, u_long *mask) +{ + if (id >= LogMIN && id <= LogMAXCONF) { + *mask &= ~MSK(id); + LogSetMaskLocal(); + } +} + +void +log_DiscardAll() +{ + LogMask = 0; +} + +void +log_DiscardAllLocal(u_long *mask) +{ + *mask = MSK(LogERROR) | MSK(LogALERT) | MSK(LogWARN); + LogSetMaskLocal(); +} + +int +log_IsKept(int id) +{ + if (id == LogLOG) + return LOG_KEPT_SYSLOG; + if (id < LogMIN || id > LogMAX) + return 0; + if (id > LogMAXCONF) + return LOG_KEPT_LOCAL | LOG_KEPT_SYSLOG; + + return ((LogMaskLocal & MSK(id)) ? LOG_KEPT_LOCAL : 0) | + ((LogMask & MSK(id)) ? LOG_KEPT_SYSLOG : 0); +} + +int +log_IsKeptLocal(int id, u_long mask) +{ + if (id < LogMIN || id > LogMAX) + return 0; + if (id > LogMAXCONF) + return LOG_KEPT_LOCAL | LOG_KEPT_SYSLOG; + + return ((mask & MSK(id)) ? LOG_KEPT_LOCAL : 0) | + ((LogMask & MSK(id)) ? LOG_KEPT_SYSLOG : 0); +} + +void +log_Open(const char *Name) +{ + openlog(Name, LOG_PID, LOG_DAEMON); +} + +void +log_SetTun(int tunno) +{ + LogTunno = tunno; +} + +void +log_Close() +{ + closelog(); + LogTunno = -1; +} + +void +log_Printf(int lev, const char *fmt,...) +{ + va_list ap; + struct prompt *prompt; + + if (log_IsKept(lev)) { + char nfmt[200]; + + va_start(ap, fmt); + if (promptlist && (log_IsKept(lev) & LOG_KEPT_LOCAL)) { + if ((log_IsKept(LogTUN) & LOG_KEPT_LOCAL) && LogTunno != -1) + snprintf(nfmt, sizeof nfmt, "%s%d: %s: %s", TUN_NAME, + LogTunno, log_Name(lev), fmt); + else + snprintf(nfmt, sizeof nfmt, "%s: %s", log_Name(lev), fmt); + + if (log_PromptContext && lev == LogWARN) + /* Warnings just go to the current prompt */ + prompt_vPrintf(log_PromptContext, nfmt, ap); + else for (prompt = promptlist; prompt; prompt = prompt->next) + if (lev > LogMAXCONF || (prompt->logmask & MSK(lev))) + prompt_vPrintf(prompt, nfmt, ap); + } + va_end(ap); + + va_start(ap, fmt); + if ((log_IsKept(lev) & LOG_KEPT_SYSLOG) && + (lev != LogWARN || !log_PromptContext)) { + if ((log_IsKept(LogTUN) & LOG_KEPT_SYSLOG) && LogTunno != -1) + snprintf(nfmt, sizeof nfmt, "%s%d: %s: %s", TUN_NAME, + LogTunno, log_Name(lev), fmt); + else + snprintf(nfmt, sizeof nfmt, "%s: %s", log_Name(lev), fmt); + vsyslog(syslogLevel(lev), nfmt, ap); + } + va_end(ap); + } +} + +void +log_DumpBp(int lev, const char *hdr, const struct mbuf *bp) +{ + if (log_IsKept(lev)) { + char buf[68]; + char *b, *c; + const u_char *ptr; + int f; + + if (hdr && *hdr) + log_Printf(lev, "%s\n", hdr); + + b = buf; + c = b + 50; + do { + f = bp->m_len; + ptr = CONST_MBUF_CTOP(bp); + while (f--) { + sprintf(b, " %02x", (int) *ptr); + *c++ = isprint(*ptr) ? *ptr : '.'; + ptr++; + b += 3; + if (b == buf + 48) { + memset(b, ' ', 2); + *c = '\0'; + log_Printf(lev, "%s\n", buf); + b = buf; + c = b + 50; + } + } + } while ((bp = bp->m_next) != NULL); + + if (b > buf) { + memset(b, ' ', 50 - (b - buf)); + *c = '\0'; + log_Printf(lev, "%s\n", buf); + } + } +} + +void +log_DumpBuff(int lev, const char *hdr, const u_char *ptr, int n) +{ + if (log_IsKept(lev)) { + char buf[68]; + char *b, *c; + + if (hdr && *hdr) + log_Printf(lev, "%s\n", hdr); + while (n > 0) { + b = buf; + c = b + 50; + for (b = buf; b != buf + 48 && n--; b += 3, ptr++) { + sprintf(b, " %02x", (int) *ptr); + *c++ = isprint(*ptr) ? *ptr : '.'; + } + memset(b, ' ', 50 - (b - buf)); + *c = '\0'; + log_Printf(lev, "%s\n", buf); + } + } +} + +int +log_ShowLevel(struct cmdargs const *arg) +{ + int i; + + prompt_Printf(arg->prompt, "Log: "); + for (i = LogMIN; i <= LogMAX; i++) + if (log_IsKept(i) & LOG_KEPT_SYSLOG) + prompt_Printf(arg->prompt, " %s", log_Name(i)); + + prompt_Printf(arg->prompt, "\nLocal:"); + for (i = LogMIN; i <= LogMAX; i++) + if (log_IsKeptLocal(i, arg->prompt->logmask) & LOG_KEPT_LOCAL) + prompt_Printf(arg->prompt, " %s", log_Name(i)); + + prompt_Printf(arg->prompt, "\n"); + + return 0; +} + +int +log_SetLevel(struct cmdargs const *arg) +{ + int i, res, argc, local; + char const *const *argv, *argp; + + argc = arg->argc - arg->argn; + argv = arg->argv + arg->argn; + res = 0; + + if (argc == 0 || strcasecmp(argv[0], "local")) + local = 0; + else { + if (arg->prompt == NULL) { + log_Printf(LogWARN, "set log local: Only available on the" + " command line\n"); + return 1; + } + argc--; + argv++; + local = 1; + } + + if (argc == 0 || (argv[0][0] != '+' && argv[0][0] != '-')) { + if (local) + log_DiscardAllLocal(&arg->prompt->logmask); + else + log_DiscardAll(); + } + + while (argc--) { + argp = **argv == '+' || **argv == '-' ? *argv + 1 : *argv; + /* Special case 'all' */ + if (strcasecmp(argp, "all") == 0) { + if (**argv == '-') { + if (local) + for (i = LogMIN; i <= LogMAX; i++) + log_DiscardLocal(i, &arg->prompt->logmask); + else + for (i = LogMIN; i <= LogMAX; i++) + log_Discard(i); + } else if (local) + for (i = LogMIN; i <= LogMAX; i++) + log_KeepLocal(i, &arg->prompt->logmask); + else + for (i = LogMIN; i <= LogMAX; i++) + log_Keep(i); + argv++; + continue; + } + for (i = LogMIN; i <= LogMAX; i++) + if (strcasecmp(argp, log_Name(i)) == 0) { + if (**argv == '-') { + if (local) + log_DiscardLocal(i, &arg->prompt->logmask); + else + log_Discard(i); + } else if (local) + log_KeepLocal(i, &arg->prompt->logmask); + else + log_Keep(i); + break; + } + if (i > LogMAX) { + log_Printf(LogWARN, "%s: Invalid log value\n", argp); + res = -1; + } + argv++; + } + return res; +} + +int +log_ShowWho(struct cmdargs const *arg) +{ + struct prompt *p; + + for (p = promptlist; p; p = p->next) { + prompt_Printf(arg->prompt, "%s (%s)", p->src.type, p->src.from); + if (p == arg->prompt) + prompt_Printf(arg->prompt, " *"); + if (!p->active) + prompt_Printf(arg->prompt, " ^Z"); + prompt_Printf(arg->prompt, "\n"); + } + + return 0; +} |