Annotation of src/usr.bin/ssh/misc.c, Revision 1.11
1.11 ! markus 1: /* $OpenBSD: misc.c,v 1.10 2001/06/16 08:49:38 markus 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"
1.11 ! markus 28: RCSID("$OpenBSD: misc.c,v 1.10 2001/06/16 08:49:38 markus 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;
1.11 ! markus 134: copy->pw_expire = pw->pw_expire;
! 135: copy->pw_change = pw->pw_change;
1.2 markus 136: copy->pw_class = xstrdup(pw->pw_class);
137: copy->pw_dir = xstrdup(pw->pw_dir);
138: copy->pw_shell = xstrdup(pw->pw_shell);
139: return copy;
1.5 stevesk 140: }
141:
142: int a2port(const char *s)
143: {
144: long port;
145: char *endp;
146:
147: errno = 0;
148: port = strtol(s, &endp, 0);
149: if (s == endp || *endp != '\0' ||
150: (errno == ERANGE && (port == LONG_MIN || port == LONG_MAX)) ||
151: port <= 0 || port > 65535)
152: return 0;
153:
154: return port;
1.9 stevesk 155: }
156:
157: #define SECONDS 1
158: #define MINUTES (SECONDS * 60)
159: #define HOURS (MINUTES * 60)
160: #define DAYS (HOURS * 24)
161: #define WEEKS (DAYS * 7)
162:
163: long convtime(const char *s)
164: {
165: long total, secs;
166: const char *p;
167: char *endp;
168:
169: errno = 0;
170: total = 0;
171: p = s;
172:
173: if (p == NULL || *p == '\0')
174: return -1;
175:
176: while (*p) {
177: secs = strtol(p, &endp, 10);
178: if (p == endp ||
179: (errno == ERANGE && (secs == LONG_MIN || secs == LONG_MAX)) ||
180: secs < 0)
181: return -1;
182:
183: switch (*endp++) {
184: case '\0':
185: endp--;
186: case 's':
187: case 'S':
188: break;
189: case 'm':
190: case 'M':
191: secs *= MINUTES;
192: break;
193: case 'h':
194: case 'H':
195: secs *= HOURS;
196: break;
197: case 'd':
198: case 'D':
199: secs *= DAYS;
200: break;
201: case 'w':
202: case 'W':
203: secs *= WEEKS;
204: break;
205: default:
206: return -1;
207: }
208: total += secs;
209: if (total < 0)
210: return -1;
211: p = endp;
212: }
213:
214: return total;
1.6 mouring 215: }
216:
217: char *
218: cleanhostname(char *host)
219: {
220: if (*host == '[' && host[strlen(host) - 1] == ']') {
221: host[strlen(host) - 1] = '\0';
222: return (host + 1);
223: } else
224: return host;
225: }
226:
227: char *
228: colon(char *cp)
229: {
230: int flag = 0;
231:
232: if (*cp == ':') /* Leading colon is part of file name. */
233: return (0);
234: if (*cp == '[')
235: flag = 1;
236:
237: for (; *cp; ++cp) {
238: if (*cp == '@' && *(cp+1) == '[')
239: flag = 1;
240: if (*cp == ']' && *(cp+1) == ':' && flag)
241: return (cp+1);
242: if (*cp == ':' && !flag)
243: return (cp);
244: if (*cp == '/')
245: return (0);
246: }
247: return (0);
1.7 mouring 248: }
249:
250: void
251: addargs(arglist *args, char *fmt, ...)
252: {
253: va_list ap;
254: char buf[1024];
255:
256: va_start(ap, fmt);
257: vsnprintf(buf, sizeof(buf), fmt, ap);
258: va_end(ap);
259:
260: if (args->list == NULL) {
261: args->nalloc = 32;
262: args->num = 0;
263: } else if (args->num+2 >= args->nalloc)
264: args->nalloc *= 2;
265:
266: args->list = xrealloc(args->list, args->nalloc * sizeof(char *));
267: args->list[args->num++] = xstrdup(buf);
268: args->list[args->num] = NULL;
1.1 markus 269: }