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3a2b2b44 | 1 | /* Based on conf.c from UCB sendmail 8.8.8 */ |
f5af5cd5 | 2 | |
3a2b2b44 | 3 | /* |
4 | * Copyright 2003 Damien Miller | |
5 | * Copyright (c) 1983, 1995-1997 Eric P. Allman | |
6 | * Copyright (c) 1988, 1993 | |
7 | * The Regents of the University of California. All rights reserved. | |
f5af5cd5 | 8 | * |
3a2b2b44 | 9 | * Redistribution and use in source and binary forms, with or without |
10 | * modification, are permitted provided that the following conditions | |
11 | * are met: | |
12 | * 1. Redistributions of source code must retain the above copyright | |
13 | * notice, this list of conditions and the following disclaimer. | |
14 | * 2. Redistributions in binary form must reproduce the above copyright | |
15 | * notice, this list of conditions and the following disclaimer in the | |
16 | * documentation and/or other materials provided with the distribution. | |
17 | * 3. All advertising materials mentioning features or use of this software | |
18 | * must display the following acknowledgement: | |
19 | * This product includes software developed by the University of | |
20 | * California, Berkeley and its contributors. | |
21 | * 4. Neither the name of the University nor the names of its contributors | |
22 | * may be used to endorse or promote products derived from this software | |
23 | * without specific prior written permission. | |
f5af5cd5 | 24 | * |
3a2b2b44 | 25 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
26 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
27 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
28 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
30 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
31 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
32 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
33 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
34 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
35 | * SUCH DAMAGE. | |
f5af5cd5 | 36 | */ |
37 | ||
f5af5cd5 | 38 | #include "includes.h" |
39 | ||
260d427b | 40 | #ifndef HAVE_SETPROCTITLE |
41 | ||
d0104542 | 42 | #include <unistd.h> |
43 | #ifdef HAVE_SYS_PSTAT_H | |
3a2b2b44 | 44 | #include <sys/pstat.h> |
d0104542 | 45 | #endif |
46 | ||
3a2b2b44 | 47 | #define SPT_NONE 0 /* don't use it at all */ |
48 | #define SPT_PSTAT 1 /* cover argv with title information */ | |
49 | #define SPT_REUSEARGV 2 /* use pstat(PSTAT_SETCMD, ...) */ | |
e80fb2a0 | 50 | |
3a2b2b44 | 51 | #ifndef SPT_TYPE |
52 | # define SPT_TYPE SPT_NONE | |
f5af5cd5 | 53 | #endif |
54 | ||
3a2b2b44 | 55 | #ifndef SPT_PADCHAR |
56 | # define SPT_PADCHAR '\0' | |
d0104542 | 57 | #endif |
877c5ea2 | 58 | |
3a2b2b44 | 59 | #if SPT_TYPE == SPT_REUSEARGV |
60 | static char *argv_start = NULL; | |
61 | static size_t argv_env_len = 0; | |
e80fb2a0 | 62 | #endif |
d0104542 | 63 | |
3a2b2b44 | 64 | #endif /* HAVE_SETPROCTITLE */ |
f5af5cd5 | 65 | |
f5af5cd5 | 66 | void |
3a2b2b44 | 67 | compat_init_setproctitle(int argc, char *argv[]) |
f5af5cd5 | 68 | { |
3a2b2b44 | 69 | #if SPT_TYPE == SPT_REUSEARGV |
70 | extern char **environ; | |
71 | char *lastargv = NULL; | |
72 | char **envp = environ; | |
73 | int i; | |
d0104542 | 74 | |
75 | /* | |
3a2b2b44 | 76 | * NB: This assumes that argv has already been copied out of the |
77 | * way. This is true for sshd, but may not be true for other | |
78 | * programs. Beware. | |
d0104542 | 79 | */ |
d0104542 | 80 | |
3a2b2b44 | 81 | if (argc == 0 || argv[0] == NULL) |
82 | return; | |
83 | ||
84 | /* Fail if we can't allocate room for the new environment */ | |
85 | for (i = 0; envp[i] != NULL; i++) | |
86 | ; | |
87 | if ((environ = malloc(sizeof(*environ) * (i + 1))) == NULL) { | |
88 | environ = envp; /* put it back */ | |
89 | return; | |
90 | } | |
d0104542 | 91 | |
92 | /* | |
3a2b2b44 | 93 | * Find the last argv string or environment variable within |
94 | * our process memory area. | |
d0104542 | 95 | */ |
3a2b2b44 | 96 | for (i = 0; i < argc; i++) { |
97 | if (lastargv == NULL || lastargv + 1 == argv[i]) | |
98 | lastargv = argv[i] + strlen(argv[i]); | |
99 | } | |
100 | for (i = 0; envp[i] != NULL; i++) { | |
101 | if (lastargv + 1 == envp[i]) | |
102 | lastargv = envp[i] + strlen(envp[i]); | |
d0104542 | 103 | } |
f5af5cd5 | 104 | |
3a2b2b44 | 105 | argv[1] = NULL; |
106 | argv_start = argv[0]; | |
107 | argv_env_len = lastargv - argv[0] - 1; | |
d0104542 | 108 | |
3a2b2b44 | 109 | /* |
110 | * Copy environment | |
111 | * XXX - will truncate env on strdup fail | |
112 | */ | |
113 | for (i = 0; envp[i] != NULL; i++) | |
114 | environ[i] = strdup(envp[i]); | |
115 | environ[i] = NULL; | |
116 | #endif /* SPT_REUSEARGV */ | |
f5af5cd5 | 117 | } |
d0104542 | 118 | |
3a2b2b44 | 119 | #ifndef HAVE_SETPROCTITLE |
d0104542 | 120 | void |
3a2b2b44 | 121 | setproctitle(const char *fmt, ...) |
d0104542 | 122 | { |
3a2b2b44 | 123 | #if SPT_TYPE != SPT_NONE |
124 | va_list ap; | |
125 | char buf[1024]; | |
126 | size_t len; | |
127 | extern char *__progname; | |
128 | #if SPT_TYPE == SPT_PSTAT | |
129 | union pstun pst; | |
d0104542 | 130 | #endif |
131 | ||
3a2b2b44 | 132 | #if SPT_TYPE == SPT_REUSEARGV |
133 | if (argv_env_len <= 0) | |
d0104542 | 134 | return; |
3a2b2b44 | 135 | #endif |
d0104542 | 136 | |
3a2b2b44 | 137 | strlcpy(buf, __progname, sizeof(buf)); |
138 | ||
139 | va_start(ap, fmt); | |
140 | if (fmt != NULL) { | |
141 | len = strlcat(buf, ": ", sizeof(buf)); | |
142 | if (len < sizeof(buf)) | |
143 | vsnprintf(buf + len, sizeof(buf) - len , fmt, ap); | |
d0104542 | 144 | } |
3a2b2b44 | 145 | va_end(ap); |
d0104542 | 146 | |
3a2b2b44 | 147 | #if SPT_TYPE == SPT_PSTAT |
148 | pst.pst_command = buf; | |
149 | pstat(PSTAT_SETCMD, pst, strlen(buf), 0, 0); | |
150 | #elif SPT_TYPE == SPT_REUSEARGV | |
151 | /* debug("setproctitle: copy \"%s\" into len %d", | |
152 | buf, argv_env_len); */ | |
153 | len = strlcpy(argv_start, buf, argv_env_len); | |
154 | for(; len < argv_env_len; len++) | |
155 | argv_start[len] = SPT_PADCHAR; | |
156 | #endif | |
d0104542 | 157 | |
3a2b2b44 | 158 | #endif /* SPT_NONE */ |
d0104542 | 159 | } |
160 | ||
3a2b2b44 | 161 | #endif /* HAVE_SETPROCTITLE */ |