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1.10 ! markus 1: /* $OpenBSD: misc.c,v 1.9 2001/05/19 19:43:57 stevesk Exp $ */
1.1 markus 2:
3: /*
4: * Copyright (c) 2000 Markus Friedl. All rights reserved.
5: *
6: * Redistribution and use in source and binary forms, with or without
7: * modification, are permitted provided that the following conditions
8: * are met:
9: * 1. Redistributions of source code must retain the above copyright
10: * notice, this list of conditions and the following disclaimer.
11: * 2. Redistributions in binary form must reproduce the above copyright
12: * notice, this list of conditions and the following disclaimer in the
13: * documentation and/or other materials provided with the distribution.
14: *
15: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25: */
26:
27: #include "includes.h"
1.10 ! markus 28: RCSID("$OpenBSD: misc.c,v 1.9 2001/05/19 19:43:57 stevesk Exp $");
1.1 markus 29:
30: #include "misc.h"
31: #include "log.h"
1.3 deraadt 32: #include "xmalloc.h"
1.1 markus 33:
34: char *
35: chop(char *s)
36: {
37: char *t = s;
38: while (*t) {
39: if(*t == '\n' || *t == '\r') {
40: *t = '\0';
41: return s;
42: }
43: t++;
44: }
45: return s;
46:
47: }
48:
49: void
50: set_nonblock(int fd)
51: {
52: int val;
1.8 markus 53:
1.1 markus 54: val = fcntl(fd, F_GETFL, 0);
55: if (val < 0) {
56: error("fcntl(%d, F_GETFL, 0): %s", fd, strerror(errno));
57: return;
58: }
59: if (val & O_NONBLOCK) {
1.8 markus 60: debug2("fd %d is O_NONBLOCK", fd);
1.1 markus 61: return;
62: }
63: debug("fd %d setting O_NONBLOCK", fd);
64: val |= O_NONBLOCK;
1.8 markus 65: if (fcntl(fd, F_SETFL, val) == -1)
66: if (errno != ENODEV)
67: error("fcntl(%d, F_SETFL, O_NONBLOCK): %s",
68: fd, strerror(errno));
69: }
70:
71: void
72: unset_nonblock(int fd)
73: {
74: int val;
75:
76: val = fcntl(fd, F_GETFL, 0);
77: if (val < 0) {
78: error("fcntl(%d, F_GETFL, 0): %s", fd, strerror(errno));
79: return;
80: }
81: if (!(val & O_NONBLOCK)) {
82: debug2("fd %d is not O_NONBLOCK", fd);
83: return;
84: }
1.10 ! markus 85: debug("fd %d clearing O_NONBLOCK", fd);
1.8 markus 86: val &= ~O_NONBLOCK;
1.1 markus 87: if (fcntl(fd, F_SETFL, val) == -1)
88: if (errno != ENODEV)
89: error("fcntl(%d, F_SETFL, O_NONBLOCK): %s",
90: fd, strerror(errno));
91: }
92:
93: /* Characters considered whitespace in strsep calls. */
94: #define WHITESPACE " \t\r\n"
95:
96: char *
97: strdelim(char **s)
98: {
99: char *old;
100: int wspace = 0;
101:
102: if (*s == NULL)
103: return NULL;
104:
105: old = *s;
106:
107: *s = strpbrk(*s, WHITESPACE "=");
108: if (*s == NULL)
109: return (old);
110:
111: /* Allow only one '=' to be skipped */
112: if (*s[0] == '=')
113: wspace = 1;
114: *s[0] = '\0';
115:
116: *s += strspn(*s + 1, WHITESPACE) + 1;
117: if (*s[0] == '=' && !wspace)
118: *s += strspn(*s + 1, WHITESPACE) + 1;
119:
120: return (old);
1.2 markus 121: }
122:
123: struct passwd *
124: pwcopy(struct passwd *pw)
125: {
126: struct passwd *copy = xmalloc(sizeof(*copy));
1.4 deraadt 127:
1.2 markus 128: memset(copy, 0, sizeof(*copy));
129: copy->pw_name = xstrdup(pw->pw_name);
130: copy->pw_passwd = xstrdup(pw->pw_passwd);
1.4 deraadt 131: copy->pw_gecos = xstrdup(pw->pw_gecos);
1.2 markus 132: copy->pw_uid = pw->pw_uid;
133: copy->pw_gid = pw->pw_gid;
134: copy->pw_class = xstrdup(pw->pw_class);
135: copy->pw_dir = xstrdup(pw->pw_dir);
136: copy->pw_shell = xstrdup(pw->pw_shell);
137: return copy;
1.5 stevesk 138: }
139:
140: int a2port(const char *s)
141: {
142: long port;
143: char *endp;
144:
145: errno = 0;
146: port = strtol(s, &endp, 0);
147: if (s == endp || *endp != '\0' ||
148: (errno == ERANGE && (port == LONG_MIN || port == LONG_MAX)) ||
149: port <= 0 || port > 65535)
150: return 0;
151:
152: return port;
1.9 stevesk 153: }
154:
155: #define SECONDS 1
156: #define MINUTES (SECONDS * 60)
157: #define HOURS (MINUTES * 60)
158: #define DAYS (HOURS * 24)
159: #define WEEKS (DAYS * 7)
160:
161: long convtime(const char *s)
162: {
163: long total, secs;
164: const char *p;
165: char *endp;
166:
167: errno = 0;
168: total = 0;
169: p = s;
170:
171: if (p == NULL || *p == '\0')
172: return -1;
173:
174: while (*p) {
175: secs = strtol(p, &endp, 10);
176: if (p == endp ||
177: (errno == ERANGE && (secs == LONG_MIN || secs == LONG_MAX)) ||
178: secs < 0)
179: return -1;
180:
181: switch (*endp++) {
182: case '\0':
183: endp--;
184: case 's':
185: case 'S':
186: break;
187: case 'm':
188: case 'M':
189: secs *= MINUTES;
190: break;
191: case 'h':
192: case 'H':
193: secs *= HOURS;
194: break;
195: case 'd':
196: case 'D':
197: secs *= DAYS;
198: break;
199: case 'w':
200: case 'W':
201: secs *= WEEKS;
202: break;
203: default:
204: return -1;
205: }
206: total += secs;
207: if (total < 0)
208: return -1;
209: p = endp;
210: }
211:
212: return total;
1.6 mouring 213: }
214:
215: char *
216: cleanhostname(char *host)
217: {
218: if (*host == '[' && host[strlen(host) - 1] == ']') {
219: host[strlen(host) - 1] = '\0';
220: return (host + 1);
221: } else
222: return host;
223: }
224:
225: char *
226: colon(char *cp)
227: {
228: int flag = 0;
229:
230: if (*cp == ':') /* Leading colon is part of file name. */
231: return (0);
232: if (*cp == '[')
233: flag = 1;
234:
235: for (; *cp; ++cp) {
236: if (*cp == '@' && *(cp+1) == '[')
237: flag = 1;
238: if (*cp == ']' && *(cp+1) == ':' && flag)
239: return (cp+1);
240: if (*cp == ':' && !flag)
241: return (cp);
242: if (*cp == '/')
243: return (0);
244: }
245: return (0);
1.7 mouring 246: }
247:
248: void
249: addargs(arglist *args, char *fmt, ...)
250: {
251: va_list ap;
252: char buf[1024];
253:
254: va_start(ap, fmt);
255: vsnprintf(buf, sizeof(buf), fmt, ap);
256: va_end(ap);
257:
258: if (args->list == NULL) {
259: args->nalloc = 32;
260: args->num = 0;
261: } else if (args->num+2 >= args->nalloc)
262: args->nalloc *= 2;
263:
264: args->list = xrealloc(args->list, args->nalloc * sizeof(char *));
265: args->list[args->num++] = xstrdup(buf);
266: args->list[args->num] = NULL;
1.1 markus 267: }