1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
24*0Sstevel@tonic-gate * Use is subject to license terms.
25*0Sstevel@tonic-gate */
26*0Sstevel@tonic-gate
27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
28*0Sstevel@tonic-gate
29*0Sstevel@tonic-gate #include <stdlib.h>
30*0Sstevel@tonic-gate #include <strings.h>
31*0Sstevel@tonic-gate #include <libintl.h>
32*0Sstevel@tonic-gate
33*0Sstevel@tonic-gate #include "inetd_impl.h"
34*0Sstevel@tonic-gate
35*0Sstevel@tonic-gate extern char **environ;
36*0Sstevel@tonic-gate
37*0Sstevel@tonic-gate static int
valid_env_var(const char * var,const char * instance,const char * method)38*0Sstevel@tonic-gate valid_env_var(const char *var, const char *instance, const char *method)
39*0Sstevel@tonic-gate {
40*0Sstevel@tonic-gate char *cp = strchr(var, '=');
41*0Sstevel@tonic-gate
42*0Sstevel@tonic-gate if (cp == NULL || cp == var) {
43*0Sstevel@tonic-gate if (method == NULL)
44*0Sstevel@tonic-gate return (0);
45*0Sstevel@tonic-gate error_msg(gettext("Invalid environment variable \"%s\" for "
46*0Sstevel@tonic-gate "method %s of instance %s.\n"), var, method, instance);
47*0Sstevel@tonic-gate return (0);
48*0Sstevel@tonic-gate } else if (strncmp(var, "SMF_", 4) == 0) {
49*0Sstevel@tonic-gate if (method == NULL)
50*0Sstevel@tonic-gate return (0);
51*0Sstevel@tonic-gate error_msg(gettext("Invalid environment variable \"%s\" for "
52*0Sstevel@tonic-gate "method %s of instance %s; \"SMF_\" prefix is reserved.\n"),
53*0Sstevel@tonic-gate var, method, instance);
54*0Sstevel@tonic-gate return (0);
55*0Sstevel@tonic-gate }
56*0Sstevel@tonic-gate
57*0Sstevel@tonic-gate return (1);
58*0Sstevel@tonic-gate }
59*0Sstevel@tonic-gate
60*0Sstevel@tonic-gate static char **
find_dup(const char * var,char ** env,const char * instance,const char * method)61*0Sstevel@tonic-gate find_dup(const char *var, char **env, const char *instance, const char *method)
62*0Sstevel@tonic-gate {
63*0Sstevel@tonic-gate char **p;
64*0Sstevel@tonic-gate char *tmp;
65*0Sstevel@tonic-gate
66*0Sstevel@tonic-gate for (p = env; *p != NULL; p++) {
67*0Sstevel@tonic-gate tmp = strchr(*p, '=');
68*0Sstevel@tonic-gate assert(tmp != NULL);
69*0Sstevel@tonic-gate tmp++;
70*0Sstevel@tonic-gate if (strncmp(*p, var, tmp - *p) == 0)
71*0Sstevel@tonic-gate break;
72*0Sstevel@tonic-gate }
73*0Sstevel@tonic-gate
74*0Sstevel@tonic-gate if (*p == NULL)
75*0Sstevel@tonic-gate return (NULL);
76*0Sstevel@tonic-gate
77*0Sstevel@tonic-gate error_msg(gettext("Ignoring duplicate environment variable \"%s\" "
78*0Sstevel@tonic-gate "for method %s of instance %s.\n"), *p, method, instance);
79*0Sstevel@tonic-gate return (p);
80*0Sstevel@tonic-gate }
81*0Sstevel@tonic-gate
82*0Sstevel@tonic-gate /*
83*0Sstevel@tonic-gate * Create an environment which is appropriate for spawning an SMF aware
84*0Sstevel@tonic-gate * process.
85*0Sstevel@tonic-gate *
86*0Sstevel@tonic-gate * In order to preserve the correctness of the new environment, various
87*0Sstevel@tonic-gate * checks are performed:
88*0Sstevel@tonic-gate *
89*0Sstevel@tonic-gate * - All SMF_ entries are ignored. All SMF_ entries should be provided
90*0Sstevel@tonic-gate * by this function.
91*0Sstevel@tonic-gate * - Duplicates in the entry are eliminated.
92*0Sstevel@tonic-gate * - Malformed entries are eliminated.
93*0Sstevel@tonic-gate *
94*0Sstevel@tonic-gate * Detected errors are logged but not fatal, since a single bad entry
95*0Sstevel@tonic-gate * should not be enough to prevent an SMF_ functional environment from
96*0Sstevel@tonic-gate * being created.
97*0Sstevel@tonic-gate */
98*0Sstevel@tonic-gate char **
set_smf_env(struct method_context * mthd_ctxt,instance_t * instance,const char * method)99*0Sstevel@tonic-gate set_smf_env(struct method_context *mthd_ctxt, instance_t *instance,
100*0Sstevel@tonic-gate const char *method)
101*0Sstevel@tonic-gate {
102*0Sstevel@tonic-gate char **nenv;
103*0Sstevel@tonic-gate char **p, **np;
104*0Sstevel@tonic-gate size_t nenv_size;
105*0Sstevel@tonic-gate
106*0Sstevel@tonic-gate /*
107*0Sstevel@tonic-gate * Max. of env, three SMF_ variables, and terminating NULL.
108*0Sstevel@tonic-gate */
109*0Sstevel@tonic-gate nenv_size = mthd_ctxt->env_sz + 3 + 1;
110*0Sstevel@tonic-gate
111*0Sstevel@tonic-gate if (instance->config->basic->inherit_env) {
112*0Sstevel@tonic-gate for (p = environ; *p != NULL; p++)
113*0Sstevel@tonic-gate nenv_size++;
114*0Sstevel@tonic-gate }
115*0Sstevel@tonic-gate
116*0Sstevel@tonic-gate nenv = malloc(sizeof (char *) * nenv_size);
117*0Sstevel@tonic-gate if (nenv == NULL)
118*0Sstevel@tonic-gate return (NULL);
119*0Sstevel@tonic-gate (void) memset(nenv, 0, sizeof (char *) * nenv_size);
120*0Sstevel@tonic-gate
121*0Sstevel@tonic-gate np = nenv;
122*0Sstevel@tonic-gate
123*0Sstevel@tonic-gate *np = uu_msprintf("SMF_RESTARTER=%s", INETD_INSTANCE_FMRI);
124*0Sstevel@tonic-gate if (*np == NULL)
125*0Sstevel@tonic-gate goto fail;
126*0Sstevel@tonic-gate else
127*0Sstevel@tonic-gate np++;
128*0Sstevel@tonic-gate *np = uu_msprintf("SMF_FMRI=%s", instance->fmri);
129*0Sstevel@tonic-gate if (*np == NULL)
130*0Sstevel@tonic-gate goto fail;
131*0Sstevel@tonic-gate else
132*0Sstevel@tonic-gate np++;
133*0Sstevel@tonic-gate *np = uu_msprintf("SMF_METHOD=%s", method);
134*0Sstevel@tonic-gate if (*np == NULL)
135*0Sstevel@tonic-gate goto fail;
136*0Sstevel@tonic-gate else
137*0Sstevel@tonic-gate np++;
138*0Sstevel@tonic-gate
139*0Sstevel@tonic-gate if (instance->config->basic->inherit_env) {
140*0Sstevel@tonic-gate for (p = environ; *p != NULL; p++) {
141*0Sstevel@tonic-gate if (!valid_env_var(*p, NULL, NULL))
142*0Sstevel@tonic-gate continue;
143*0Sstevel@tonic-gate
144*0Sstevel@tonic-gate *np = strdup(*p);
145*0Sstevel@tonic-gate if (*np == NULL)
146*0Sstevel@tonic-gate goto fail;
147*0Sstevel@tonic-gate else
148*0Sstevel@tonic-gate np++;
149*0Sstevel@tonic-gate }
150*0Sstevel@tonic-gate }
151*0Sstevel@tonic-gate
152*0Sstevel@tonic-gate if (mthd_ctxt->env != NULL) {
153*0Sstevel@tonic-gate for (p = mthd_ctxt->env; *p != NULL; p++) {
154*0Sstevel@tonic-gate char **dup_pos;
155*0Sstevel@tonic-gate
156*0Sstevel@tonic-gate if (!valid_env_var(*p, instance->fmri, method))
157*0Sstevel@tonic-gate continue;
158*0Sstevel@tonic-gate
159*0Sstevel@tonic-gate if ((dup_pos = find_dup(*p, nenv, instance->fmri,
160*0Sstevel@tonic-gate method)) != NULL) {
161*0Sstevel@tonic-gate free(*dup_pos);
162*0Sstevel@tonic-gate *dup_pos = strdup(*p);
163*0Sstevel@tonic-gate if (*dup_pos == NULL)
164*0Sstevel@tonic-gate goto fail;
165*0Sstevel@tonic-gate } else {
166*0Sstevel@tonic-gate *np = strdup(*p);
167*0Sstevel@tonic-gate if (*np == NULL)
168*0Sstevel@tonic-gate goto fail;
169*0Sstevel@tonic-gate else
170*0Sstevel@tonic-gate np++;
171*0Sstevel@tonic-gate }
172*0Sstevel@tonic-gate }
173*0Sstevel@tonic-gate }
174*0Sstevel@tonic-gate *np = NULL;
175*0Sstevel@tonic-gate
176*0Sstevel@tonic-gate return (nenv);
177*0Sstevel@tonic-gate fail:
178*0Sstevel@tonic-gate p = nenv;
179*0Sstevel@tonic-gate while (nenv_size--)
180*0Sstevel@tonic-gate free(*p++);
181*0Sstevel@tonic-gate free(nenv);
182*0Sstevel@tonic-gate return (NULL);
183*0Sstevel@tonic-gate }
184