2 * Copyright (c) 2008 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Simon 'corecode' Schubert <corecode@fs.ei.tum.de>.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 #include <sys/param.h>
49 static char name[MAXHOSTNAMELEN+1];
57 if (config.mailname != NULL && config.mailname[0] != '\0') {
58 snprintf(name, sizeof(name), "%s", config.mailname);
62 if (config.mailnamefile != NULL && config.mailnamefile[0] != '\0') {
63 fp = fopen(config.mailnamefile, "r");
65 if (fgets(name, sizeof(name), fp) != NULL) {
68 (name[len - 1] == '\r' ||
69 name[len - 1] == '\n'))
71 if (name[0] != '\0') {
79 if (gethostname(name, sizeof(name)) != 0)
80 strcpy(name, "(unknown hostname)");
86 setlogident(const char *fmt, ...)
95 vasprintf(&sufx, fmt, ap);
97 asprintf(&tag, "%s[%s]", logident_base, sufx);
103 openlog(tag != NULL ? tag : logident_base, 0, LOG_MAIL);
107 errlog(int exitcode, const char *fmt, ...)
115 vasprintf(&outs, fmt, ap);
120 syslog(LOG_ERR, "%s: %m", outs);
121 fprintf(stderr, "%s: %s: %s\n", getprogname(), outs, strerror(oerrno));
123 syslog(LOG_ERR, "%m");
124 fprintf(stderr, "%s: %s\n", getprogname(), strerror(oerrno));
131 errlogx(int exitcode, const char *fmt, ...)
138 vasprintf(&outs, fmt, ap);
143 syslog(LOG_ERR, "%s", outs);
144 fprintf(stderr, "%s: %s\n", getprogname(), outs);
146 syslog(LOG_ERR, "Unknown error");
147 fprintf(stderr, "%s: Unknown error\n", getprogname());
154 check_username(const char *name, uid_t ckuid)
160 pwd = getpwnam(name);
161 if (pwd == NULL || pwd->pw_uid != ckuid)
174 username = check_username(getlogin(), uid);
175 if (username != NULL)
177 username = check_username(getenv("LOGNAME"), uid);
178 if (username != NULL)
180 username = check_username(getenv("USER"), uid);
181 if (username != NULL)
184 if (pwd != NULL && pwd->pw_name != NULL && pwd->pw_name[0] != '\0' &&
185 (u = strdup(pwd->pw_name)) != NULL) {
186 username = check_username(u, uid);
187 if (username != NULL)
192 asprintf(__DECONST(void *, &username), "%ld", (long)uid);
193 if (username != NULL)
195 username = "unknown-or-invalid-username";
203 SLIST_FOREACH(t, &tmpfs, next) {
209 open_locked(const char *fname, int flags, ...)
213 if (flags & O_CREAT) {
216 mode = va_arg(ap, int);
223 fd = open(fname, flags, mode);
226 if (flock(fd, LOCK_EX|((flags & O_NONBLOCK)? LOCK_NB: 0)) < 0) {
234 return(open(fname, flags|O_EXLOCK, mode));
246 error = strftime(str, sizeof(str), "%a, %d %b %Y %T %z",
249 strcpy(str, "(date fail)");
254 strprefixcmp(const char *str, const char *prefix)
256 return (strncasecmp(str, prefix, strlen(prefix)));