Annotation of src/usr.bin/ssh/misc.c, Revision 1.7
1.7 ! mouring 1: /* $OpenBSD: misc.c,v 1.6 2001/05/03 23:09:52 mouring 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"
1.7 ! mouring 28: RCSID("$OpenBSD: misc.c,v 1.6 2001/05/03 23:09:52 mouring 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;
53: val = fcntl(fd, F_GETFL, 0);
54: if (val < 0) {
55: error("fcntl(%d, F_GETFL, 0): %s", fd, strerror(errno));
56: return;
57: }
58: if (val & O_NONBLOCK) {
59: debug("fd %d IS O_NONBLOCK", fd);
60: return;
61: }
62: debug("fd %d setting O_NONBLOCK", fd);
63: val |= O_NONBLOCK;
64: if (fcntl(fd, F_SETFL, val) == -1)
65: if (errno != ENODEV)
66: error("fcntl(%d, F_SETFL, O_NONBLOCK): %s",
67: fd, strerror(errno));
68: }
69:
70: /* Characters considered whitespace in strsep calls. */
71: #define WHITESPACE " \t\r\n"
72:
73: char *
74: strdelim(char **s)
75: {
76: char *old;
77: int wspace = 0;
78:
79: if (*s == NULL)
80: return NULL;
81:
82: old = *s;
83:
84: *s = strpbrk(*s, WHITESPACE "=");
85: if (*s == NULL)
86: return (old);
87:
88: /* Allow only one '=' to be skipped */
89: if (*s[0] == '=')
90: wspace = 1;
91: *s[0] = '\0';
92:
93: *s += strspn(*s + 1, WHITESPACE) + 1;
94: if (*s[0] == '=' && !wspace)
95: *s += strspn(*s + 1, WHITESPACE) + 1;
96:
97: return (old);
1.2 markus 98: }
99:
100: struct passwd *
101: pwcopy(struct passwd *pw)
102: {
103: struct passwd *copy = xmalloc(sizeof(*copy));
1.4 deraadt 104:
1.2 markus 105: memset(copy, 0, sizeof(*copy));
106: copy->pw_name = xstrdup(pw->pw_name);
107: copy->pw_passwd = xstrdup(pw->pw_passwd);
1.4 deraadt 108: copy->pw_gecos = xstrdup(pw->pw_gecos);
1.2 markus 109: copy->pw_uid = pw->pw_uid;
110: copy->pw_gid = pw->pw_gid;
111: copy->pw_class = xstrdup(pw->pw_class);
112: copy->pw_dir = xstrdup(pw->pw_dir);
113: copy->pw_shell = xstrdup(pw->pw_shell);
114: return copy;
1.5 stevesk 115: }
116:
117: int a2port(const char *s)
118: {
119: long port;
120: char *endp;
121:
122: errno = 0;
123: port = strtol(s, &endp, 0);
124: if (s == endp || *endp != '\0' ||
125: (errno == ERANGE && (port == LONG_MIN || port == LONG_MAX)) ||
126: port <= 0 || port > 65535)
127: return 0;
128:
129: return port;
1.6 mouring 130: }
131:
132: char *
133: cleanhostname(char *host)
134: {
135: if (*host == '[' && host[strlen(host) - 1] == ']') {
136: host[strlen(host) - 1] = '\0';
137: return (host + 1);
138: } else
139: return host;
140: }
141:
142: char *
143: colon(char *cp)
144: {
145: int flag = 0;
146:
147: if (*cp == ':') /* Leading colon is part of file name. */
148: return (0);
149: if (*cp == '[')
150: flag = 1;
151:
152: for (; *cp; ++cp) {
153: if (*cp == '@' && *(cp+1) == '[')
154: flag = 1;
155: if (*cp == ']' && *(cp+1) == ':' && flag)
156: return (cp+1);
157: if (*cp == ':' && !flag)
158: return (cp);
159: if (*cp == '/')
160: return (0);
161: }
162: return (0);
1.7 ! mouring 163: }
! 164:
! 165: void
! 166: addargs(arglist *args, char *fmt, ...)
! 167: {
! 168: va_list ap;
! 169: char buf[1024];
! 170:
! 171: va_start(ap, fmt);
! 172: vsnprintf(buf, sizeof(buf), fmt, ap);
! 173: va_end(ap);
! 174:
! 175: if (args->list == NULL) {
! 176: args->nalloc = 32;
! 177: args->num = 0;
! 178: } else if (args->num+2 >= args->nalloc)
! 179: args->nalloc *= 2;
! 180:
! 181: args->list = xrealloc(args->list, args->nalloc * sizeof(char *));
! 182: args->list[args->num++] = xstrdup(buf);
! 183: args->list[args->num] = NULL;
1.1 markus 184: }