diff options
Diffstat (limited to 'crypto/heimdal/lib/krb5/log.c')
| -rw-r--r-- | crypto/heimdal/lib/krb5/log.c | 426 |
1 files changed, 426 insertions, 0 deletions
diff --git a/crypto/heimdal/lib/krb5/log.c b/crypto/heimdal/lib/krb5/log.c new file mode 100644 index 0000000..e1511e2 --- /dev/null +++ b/crypto/heimdal/lib/krb5/log.c @@ -0,0 +1,426 @@ +/* + * Copyright (c) 1997-1999 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * 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. + * + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE 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 INSTITUTE 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. + */ + +#include "krb5_locl.h" + +RCSID("$Id: log.c,v 1.21 1999/12/02 17:05:11 joda Exp $"); + +struct facility { + int min; + int max; + krb5_log_log_func_t log; + krb5_log_close_func_t close; + void *data; +}; + +static struct facility* +log_realloc(krb5_log_facility *f) +{ + struct facility *fp; + f->len++; + fp = realloc(f->val, f->len * sizeof(*f->val)); + if(fp == NULL) + return NULL; + f->val = fp; + fp += f->len - 1; + return fp; +} + +struct s2i{ + char *s; + int val; +}; + +#define L(X) { #X, LOG_ ## X } + +struct s2i syslogvals[] = { + L(EMERG), + L(ALERT), + L(CRIT), + L(ERR), + L(WARNING), + L(NOTICE), + L(INFO), + L(DEBUG), + + L(AUTH), +#ifdef LOG_AUTHPRIV + L(AUTHPRIV), +#endif +#ifdef LOG_CRON + L(CRON), +#endif + L(DAEMON), +#ifdef LOG_FTP + L(FTP), +#endif + L(KERN), + L(LPR), + L(MAIL), +#ifdef LOG_NEWS + L(NEWS), +#endif + L(SYSLOG), + L(USER), +#ifdef LOG_UUCP + L(UUCP), +#endif + L(LOCAL0), + L(LOCAL1), + L(LOCAL2), + L(LOCAL3), + L(LOCAL4), + L(LOCAL5), + L(LOCAL6), + L(LOCAL7), + { NULL, -1 } +}; + +static int +find_value(const char *s, struct s2i *table) +{ + while(table->s && strcasecmp(table->s, s)) + table++; + return table->val; +} + +krb5_error_code +krb5_initlog(krb5_context context, + const char *program, + krb5_log_facility **fac) +{ + krb5_log_facility *f = calloc(1, sizeof(*f)); + if(f == NULL) + return ENOMEM; + f->program = strdup(program); + if(f->program == NULL){ + free(f); + return ENOMEM; + } + *fac = f; + return 0; +} + +krb5_error_code +krb5_addlog_func(krb5_context context, + krb5_log_facility *fac, + int min, + int max, + krb5_log_log_func_t log, + krb5_log_close_func_t close, + void *data) +{ + struct facility *fp = log_realloc(fac); + if(fp == NULL) + return ENOMEM; + fp->min = min; + fp->max = max; + fp->log = log; + fp->close = close; + fp->data = data; + return 0; +} + + +struct syslog_data{ + int priority; +}; + +static void +log_syslog(const char *time, + const char *msg, + void *data) + +{ + struct syslog_data *s = data; + syslog(s->priority, "%s", msg); +} + +static void +close_syslog(void *data) +{ + free(data); + closelog(); +} + +static krb5_error_code +open_syslog(krb5_context context, + krb5_log_facility *facility, int min, int max, + const char *sev, const char *fac) +{ + struct syslog_data *sd = malloc(sizeof(*sd)); + int i; + + if(sd == NULL) + return ENOMEM; + i = find_value(sev, syslogvals); + if(i == -1) + i = LOG_ERR; + sd->priority = i; + i = find_value(fac, syslogvals); + if(i == -1) + i = LOG_AUTH; + sd->priority |= i; + roken_openlog(facility->program, LOG_PID | LOG_NDELAY, i); + return krb5_addlog_func(context, facility, min, max, + log_syslog, close_syslog, sd); +} + +struct file_data{ + char *filename; + char *mode; + FILE *fd; + int keep_open; +}; + +static void +log_file(const char *time, + const char *msg, + void *data) +{ + struct file_data *f = data; + if(f->keep_open == 0) + f->fd = fopen(f->filename, f->mode); + if(f->fd == NULL) + return; + fprintf(f->fd, "%s %s\n", time, msg); + if(f->keep_open == 0) + fclose(f->fd); +} + +static void +close_file(void *data) +{ + struct file_data *f = data; + if(f->keep_open && f->filename) + fclose(f->fd); + free(data); +} + +static krb5_error_code +open_file(krb5_context context, krb5_log_facility *fac, int min, int max, + char *filename, char *mode, FILE *f, int keep_open) +{ + struct file_data *fd = malloc(sizeof(*fd)); + if(fd == NULL) + return ENOMEM; + fd->filename = filename; + fd->mode = mode; + fd->fd = f; + fd->keep_open = keep_open; + + return krb5_addlog_func(context, fac, min, max, log_file, close_file, fd); +} + + + +krb5_error_code +krb5_addlog_dest(krb5_context context, krb5_log_facility *f, const char *p) +{ + krb5_error_code ret = 0; + int min = 0, max = -1, n; + char c; + n = sscanf(p, "%d%c%d/", &min, &c, &max); + if(n == 2){ + if(c == '/') { + if(min < 0){ + max = -min; + min = 0; + }else{ + max = min; + } + } + } + if(n){ + p = strchr(p, '/'); + if(p == NULL) return HEIM_ERR_LOG_PARSE; + p++; + } + if(strcmp(p, "STDERR") == 0){ + ret = open_file(context, f, min, max, NULL, NULL, stderr, 1); + }else if(strcmp(p, "CONSOLE") == 0){ + ret = open_file(context, f, min, max, "/dev/console", "w", NULL, 0); + }else if(strncmp(p, "FILE:", 4) == 0 && (p[4] == ':' || p[4] == '=')){ + char *fn; + FILE *file = NULL; + int keep_open = 0; + fn = strdup(p + 5); + if(fn == NULL) + return ENOMEM; + if(p[4] == '='){ + int i = open(fn, O_WRONLY | O_CREAT | + O_TRUNC | O_APPEND, 0666); + if(i < 0) + return errno; + file = fdopen(i, "a"); + if(file == NULL){ + close(i); + return errno; + } + keep_open = 1; + } + ret = open_file(context, f, min, max, fn, "a", file, keep_open); + }else if(strncmp(p, "DEVICE=", 6) == 0){ + ret = open_file(context, f, min, max, strdup(p + 7), "w", NULL, 0); + }else if(strncmp(p, "SYSLOG", 6) == 0){ + char *severity; + char *facility; + severity = strchr(p, ':'); + if(severity == NULL) + severity = "ERR"; + facility = strchr(severity, ':'); + if(facility == NULL) + facility = "AUTH"; + ret = open_syslog(context, f, min, max, severity, facility); + }else{ + ret = HEIM_ERR_LOG_PARSE; /* XXX */ + } + return ret; +} + + +krb5_error_code +krb5_openlog(krb5_context context, + const char *program, + krb5_log_facility **fac) +{ + krb5_error_code ret; + char **p, **q; + + ret = krb5_initlog(context, program, fac); + if(ret) + return ret; + + p = krb5_config_get_strings(context, NULL, "logging", program, NULL); + if(p == NULL) + p = krb5_config_get_strings(context, NULL, "logging", "default", NULL); + if(p){ + for(q = p; *q; q++) + ret = krb5_addlog_dest(context, *fac, *q); + krb5_config_free_strings(p); + }else + ret = krb5_addlog_dest(context, *fac, "SYSLOG"); + return 0; +} + +krb5_error_code +krb5_closelog(krb5_context context, + krb5_log_facility *fac) +{ + int i; + for(i = 0; i < fac->len; i++) + (*fac->val[i].close)(&fac->val[i].data); + return 0; +} + +#undef __attribute__ +#define __attribute__(X) + +krb5_error_code +krb5_vlog_msg(krb5_context context, + krb5_log_facility *fac, + char **reply, + int level, + const char *fmt, + va_list ap) + __attribute__((format (printf, 5, 0))) +{ + char *msg; + char buf[64]; + time_t t; + int i; + + vasprintf(&msg, fmt, ap); + t = time(NULL); + strftime(buf, sizeof(buf), context->time_fmt, + context->log_utc ? gmtime(&t) : localtime(&t)); + for(i = 0; i < fac->len; i++) + if(fac->val[i].min <= level && + (fac->val[i].max < 0 || fac->val[i].max >= level)) + (*fac->val[i].log)(buf, msg, fac->val[i].data); + *reply = msg; + return 0; +} + +krb5_error_code +krb5_vlog(krb5_context context, + krb5_log_facility *fac, + int level, + const char *fmt, + va_list ap) + __attribute__((format (printf, 4, 0))) +{ + char *msg; + krb5_error_code ret; + + ret = krb5_vlog_msg(context, fac, &msg, level, fmt, ap); + free(msg); + return ret; +} + +krb5_error_code +krb5_log_msg(krb5_context context, + krb5_log_facility *fac, + int level, + char **reply, + const char *fmt, + ...) + __attribute__((format (printf, 5, 6))) +{ + va_list ap; + krb5_error_code ret; + + va_start(ap, fmt); + ret = krb5_vlog_msg(context, fac, reply, level, fmt, ap); + va_end(ap); + return ret; +} + + +krb5_error_code +krb5_log(krb5_context context, + krb5_log_facility *fac, + int level, + const char *fmt, + ...) + __attribute__((format (printf, 4, 5))) +{ + va_list ap; + krb5_error_code ret; + + va_start(ap, fmt); + ret = krb5_vlog(context, fac, level, fmt, ap); + va_end(ap); + return ret; +} + |
