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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. | |
dda8edc3 | 17 | * 3. Neither the name of the University nor the names of its contributors |
3a2b2b44 | 18 | * may be used to endorse or promote products derived from this software |
19 | * without specific prior written permission. | |
f5af5cd5 | 20 | * |
3a2b2b44 | 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
f5af5cd5 | 32 | */ |
33 | ||
f5af5cd5 | 34 | #include "includes.h" |
35 | ||
260d427b | 36 | #ifndef HAVE_SETPROCTITLE |
37 | ||
baede55a | 38 | #include <stdarg.h> |
f8688ddd | 39 | #include <stdlib.h> |
d0104542 | 40 | #include <unistd.h> |
41 | #ifdef HAVE_SYS_PSTAT_H | |
3a2b2b44 | 42 | #include <sys/pstat.h> |
d0104542 | 43 | #endif |
28cb0a43 | 44 | #include <string.h> |
d0104542 | 45 | |
1ebb73e4 | 46 | #include <vis.h> |
47 | ||
3a2b2b44 | 48 | #define SPT_NONE 0 /* don't use it at all */ |
45a3410a | 49 | #define SPT_PSTAT 1 /* use pstat(PSTAT_SETCMD, ...) */ |
50 | #define SPT_REUSEARGV 2 /* cover argv with title information */ | |
e80fb2a0 | 51 | |
3a2b2b44 | 52 | #ifndef SPT_TYPE |
53 | # define SPT_TYPE SPT_NONE | |
f5af5cd5 | 54 | #endif |
55 | ||
3a2b2b44 | 56 | #ifndef SPT_PADCHAR |
57 | # define SPT_PADCHAR '\0' | |
d0104542 | 58 | #endif |
877c5ea2 | 59 | |
3a2b2b44 | 60 | #if SPT_TYPE == SPT_REUSEARGV |
61 | static char *argv_start = NULL; | |
62 | static size_t argv_env_len = 0; | |
e80fb2a0 | 63 | #endif |
d0104542 | 64 | |
3a2b2b44 | 65 | #endif /* HAVE_SETPROCTITLE */ |
f5af5cd5 | 66 | |
f5af5cd5 | 67 | void |
3a2b2b44 | 68 | compat_init_setproctitle(int argc, char *argv[]) |
f5af5cd5 | 69 | { |
39ef3618 | 70 | #if defined(SPT_TYPE) && SPT_TYPE == SPT_REUSEARGV |
3a2b2b44 | 71 | extern char **environ; |
72 | char *lastargv = NULL; | |
73 | char **envp = environ; | |
74 | int i; | |
d0104542 | 75 | |
76 | /* | |
3a2b2b44 | 77 | * NB: This assumes that argv has already been copied out of the |
78 | * way. This is true for sshd, but may not be true for other | |
79 | * programs. Beware. | |
d0104542 | 80 | */ |
d0104542 | 81 | |
3a2b2b44 | 82 | if (argc == 0 || argv[0] == NULL) |
83 | return; | |
84 | ||
85 | /* Fail if we can't allocate room for the new environment */ | |
86 | for (i = 0; envp[i] != NULL; i++) | |
87 | ; | |
01d35895 | 88 | if ((environ = calloc(i + 1, sizeof(*environ))) == NULL) { |
3a2b2b44 | 89 | environ = envp; /* put it back */ |
90 | return; | |
91 | } | |
d0104542 | 92 | |
93 | /* | |
3a2b2b44 | 94 | * Find the last argv string or environment variable within |
95 | * our process memory area. | |
d0104542 | 96 | */ |
3a2b2b44 | 97 | for (i = 0; i < argc; i++) { |
98 | if (lastargv == NULL || lastargv + 1 == argv[i]) | |
99 | lastargv = argv[i] + strlen(argv[i]); | |
100 | } | |
101 | for (i = 0; envp[i] != NULL; i++) { | |
102 | if (lastargv + 1 == envp[i]) | |
103 | lastargv = envp[i] + strlen(envp[i]); | |
d0104542 | 104 | } |
f5af5cd5 | 105 | |
3a2b2b44 | 106 | argv[1] = NULL; |
107 | argv_start = argv[0]; | |
108 | argv_env_len = lastargv - argv[0] - 1; | |
d0104542 | 109 | |
3a2b2b44 | 110 | /* |
111 | * Copy environment | |
112 | * XXX - will truncate env on strdup fail | |
113 | */ | |
114 | for (i = 0; envp[i] != NULL; i++) | |
115 | environ[i] = strdup(envp[i]); | |
116 | environ[i] = NULL; | |
117 | #endif /* SPT_REUSEARGV */ | |
f5af5cd5 | 118 | } |
d0104542 | 119 | |
3a2b2b44 | 120 | #ifndef HAVE_SETPROCTITLE |
d0104542 | 121 | void |
3a2b2b44 | 122 | setproctitle(const char *fmt, ...) |
d0104542 | 123 | { |
3a2b2b44 | 124 | #if SPT_TYPE != SPT_NONE |
125 | va_list ap; | |
1ebb73e4 | 126 | char buf[1024], ptitle[1024]; |
3a2b2b44 | 127 | size_t len; |
128 | extern char *__progname; | |
129 | #if SPT_TYPE == SPT_PSTAT | |
130 | union pstun pst; | |
d0104542 | 131 | #endif |
132 | ||
3a2b2b44 | 133 | #if SPT_TYPE == SPT_REUSEARGV |
134 | if (argv_env_len <= 0) | |
d0104542 | 135 | return; |
3a2b2b44 | 136 | #endif |
d0104542 | 137 | |
3a2b2b44 | 138 | strlcpy(buf, __progname, sizeof(buf)); |
139 | ||
140 | va_start(ap, fmt); | |
141 | if (fmt != NULL) { | |
142 | len = strlcat(buf, ": ", sizeof(buf)); | |
143 | if (len < sizeof(buf)) | |
144 | vsnprintf(buf + len, sizeof(buf) - len , fmt, ap); | |
d0104542 | 145 | } |
3a2b2b44 | 146 | va_end(ap); |
1ebb73e4 | 147 | strnvis(ptitle, buf, sizeof(ptitle), |
148 | VIS_CSTYLE|VIS_NL|VIS_TAB|VIS_OCTAL); | |
d0104542 | 149 | |
3a2b2b44 | 150 | #if SPT_TYPE == SPT_PSTAT |
1ebb73e4 | 151 | pst.pst_command = ptitle; |
152 | pstat(PSTAT_SETCMD, pst, strlen(ptitle), 0, 0); | |
3a2b2b44 | 153 | #elif SPT_TYPE == SPT_REUSEARGV |
154 | /* debug("setproctitle: copy \"%s\" into len %d", | |
155 | buf, argv_env_len); */ | |
1ebb73e4 | 156 | len = strlcpy(argv_start, ptitle, argv_env_len); |
3a2b2b44 | 157 | for(; len < argv_env_len; len++) |
158 | argv_start[len] = SPT_PADCHAR; | |
159 | #endif | |
d0104542 | 160 | |
3a2b2b44 | 161 | #endif /* SPT_NONE */ |
d0104542 | 162 | } |
163 | ||
3a2b2b44 | 164 | #endif /* HAVE_SETPROCTITLE */ |