Mercurial > hg > mercurial-crew-with-dirclash

annotate contrib/hgsh/hgsh.c @ 2341:dbbe7f72d15a

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
contrib: add restricted shell.
author Vadim Gelfer <vadim.gelfer@gmail.com>
date Tue, 23 May 2006 09:33:09 -0700
parents
children 9cbeef33eaa3
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2341
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
1 /*
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
2 * hgsh.c - restricted login shell for mercurial
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
3 *
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
4 * Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
5 *
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
6 * This software may be used and distributed according to the terms of the
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
7 * GNU General Public License, incorporated herein by reference.
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
8 *
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
9 * this program is login shell for dedicated mercurial user account. it
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
10 * only allows few actions:
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
11 *
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
12 * 1. run hg in server mode on specific repository. no other hg commands
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
13 * are allowed. we try to verify that repo to be accessed exists under
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
14 * given top-level directory.
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
15 *
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
16 * 2. (optional) forward ssh connection from firewall/gateway machine to
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
17 * "real" mercurial host, to let users outside intranet pull and push
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
18 * changes through firewall.
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
19 *
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
20 * 3. (optional) run normal shell, to allow to "su" to mercurial user, use
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
21 * "sudo" to run programs as that user, or run cron jobs as that user.
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
22 *
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
23 * only tested on linux yet. patches for non-linux systems welcome.
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
24 */
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
25
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
26 #ifndef _GNU_SOURCE
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
27 #define _GNU_SOURCE /* for asprintf */
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
28 #endif
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
29
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
30 #include <stdio.h>
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
31 #include <stdlib.h>
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
32 #include <string.h>
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
33 #include <sys/stat.h>
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
34 #include <sys/types.h>
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
35 #include <sysexits.h>
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
36 #include <unistd.h>
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
37
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
38 /*
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
39 * user config.
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
40 *
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
41 * if you see a hostname below, just use first part of hostname. example,
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
42 * if you have host named foo.bar.com, use "foo".
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
43 */
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
44
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
45 /*
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
46 * HG_GATEWAY: hostname of gateway/firewall machine that people outside your
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
47 * intranet ssh into if they need to ssh to other machines. if you do not
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
48 * have such machine, set to NULL.
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
49 */
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
50 #ifndef HG_GATEWAY
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
51 #define HG_GATEWAY "gateway"
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
52 #endif
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
53
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
54 /*
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
55 * HG_HOST: hostname of mercurial server. if any machine is allowed, set to
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
56 * NULL.
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
57 */
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
58 #ifndef HG_HOST
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
59 #define HG_HOST "mercurial"
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
60 #endif
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
61
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
62 /*
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
63 * HG_USER: username to log in from HG_GATEWAY to HG_HOST. if gateway and
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
64 * host username are same, set to NULL.
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
65 */
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
66 #ifndef HG_USER
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
67 #define HG_USER "hg"
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
68 #endif
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
69
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
70 /*
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
71 * HG_ROOT: root of tree full of mercurial repos. if you do not want to
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
72 * validate location of repo when someone is try to access, set to NULL.
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
73 */
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
74 #ifndef HG_ROOT
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
75 #define HG_ROOT "/home/hg/repos"
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
76 #endif
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
77
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
78 /*
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
79 * HG: path to the mercurial executable to run.
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
80 */
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
81 #ifndef HG
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
82 #define HG "/home/hg/bin/hg"
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
83 #endif
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
84
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
85 /*
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
86 * HG_SHELL: shell to use for actions like "sudo" and "su" access to
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
87 * mercurial user, and cron jobs. if you want to make these things
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
88 * impossible, set to NULL.
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
89 */
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
90 #ifndef HG_SHELL
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
91 #define HG_SHELL NULL
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
92 // #define HG_SHELL "/bin/bash"
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
93 #endif
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
94
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
95 /*
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
96 * HG_HELP: some way for users to get support if they have problem. if they
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
97 * should not get helpful message, set to NULL.
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
98 */
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
99 #ifndef HG_HELP
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
100 #define HG_HELP "please contact support@example.com for help."
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
101 #endif
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
102
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
103 /*
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
104 * SSH: path to ssh executable to run, if forwarding from HG_GATEWAY to
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
105 * HG_HOST. if you want to use rsh instead (why?), you need to modify
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
106 * arguments it is called with. see forward_through_gateway.
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
107 */
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
108 #ifndef SSH
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
109 #define SSH "/usr/bin/ssh"
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
110 #endif
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
111
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
112 /*
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
113 * tell whether to print command that is to be executed. useful for
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
114 * debugging. should not interfere with mercurial operation, since
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
115 * mercurial only cares about stdin and stdout, and this prints to stderr.
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
116 */
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
117 static const int debug = 0;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
118
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
119 static void print_cmdline(int argc, char **argv)
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
120 {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
121 FILE *fp = stderr;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
122 int i;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
123
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
124 fputs("command: ", fp);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
125
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
126 for (i = 0; i < argc; i++) {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
127 char *spc = strpbrk(argv[i], " \t\r\n");
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
128 if (spc) {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
129 fputc('\'', fp);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
130 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
131 fputs(argv[i], fp);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
132 if (spc) {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
133 fputc('\'', fp);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
134 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
135 if (i < argc - 1) {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
136 fputc(' ', fp);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
137 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
138 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
139 fputc('\n', fp);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
140 fflush(fp);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
141 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
142
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
143 static void usage(const char *reason, int exitcode)
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
144 {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
145 char *hg_help = HG_HELP;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
146
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
147 if (reason) {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
148 fprintf(stderr, "*** Error: %s.\n", reason);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
149 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
150 fprintf(stderr, "*** This program has been invoked incorrectly.\n");
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
151 if (hg_help) {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
152 fprintf(stderr, "*** %s\n", hg_help);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
153 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
154 exit(exitcode ? exitcode : EX_USAGE);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
155 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
156
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
157 /*
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
158 * run on gateway host to make another ssh connection, to "real" mercurial
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
159 * server. it sends its command line unmodified to far end.
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
160 *
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
161 * never called if HG_GATEWAY is NULL.
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
162 */
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
163 static void forward_through_gateway(int argc, char **argv)
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
164 {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
165 char *ssh = SSH;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
166 char *hg_host = HG_HOST;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
167 char *hg_user = HG_USER;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
168 char **nargv = alloca((10 + argc) * sizeof(char *));
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
169 int i = 0, j;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
170
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
171 nargv[i++] = ssh;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
172 nargv[i++] = "-q";
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
173 nargv[i++] = "-T";
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
174 nargv[i++] = "-x";
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
175 if (hg_user) {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
176 nargv[i++] = "-l";
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
177 nargv[i++] = hg_user;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
178 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
179 nargv[i++] = hg_host;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
180
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
181 /*
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
182 * sshd called us with added "-c", because it thinks we are a shell.
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
183 * drop it if we find it.
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
184 */
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
185 j = 1;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
186 if (j < argc && strcmp(argv[j], "-c") == 0) {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
187 j++;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
188 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
189
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
190 for (; j < argc; i++, j++) {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
191 nargv[i] = argv[j];
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
192 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
193 nargv[i] = NULL;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
194
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
195 if (debug) {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
196 print_cmdline(i, nargv);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
197 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
198
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
199 execv(ssh, nargv);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
200 perror(ssh);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
201 exit(EX_UNAVAILABLE);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
202 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
203
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
204 /*
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
205 * run shell. let administrator "su" to mercurial user's account to do
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
206 * administrative works.
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
207 *
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
208 * never called if HG_SHELL is NULL.
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
209 */
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
210 static void run_shell(int argc, char **argv)
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
211 {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
212 char *hg_shell = HG_SHELL;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
213 char **nargv;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
214 char *c;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
215 int i;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
216
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
217 nargv = alloca((argc + 3) * sizeof(char *));
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
218 c = strrchr(hg_shell, '/');
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
219
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
220 /* tell "real" shell it is login shell, if needed. */
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
221
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
222 if (argv[0][0] == '-' && c) {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
223 nargv[0] = strdup(c);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
224 if (nargv[0] == NULL) {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
225 perror("malloc");
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
226 exit(EX_OSERR);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
227 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
228 nargv[0][0] = '-';
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
229 } else {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
230 nargv[0] = hg_shell;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
231 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
232
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
233 for (i = 1; i < argc; i++) {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
234 nargv[i] = argv[i];
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
235 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
236 nargv[i] = NULL;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
237
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
238 if (debug) {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
239 print_cmdline(i, nargv);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
240 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
241
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
242 execv(hg_shell, nargv);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
243 perror(hg_shell);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
244 exit(EX_OSFILE);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
245 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
246
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
247 /*
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
248 * paranoid wrapper, runs hg executable in server mode.
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
249 */
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
250 static void serve_data(int argc, char **argv)
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
251 {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
252 char *hg_root = HG_ROOT;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
253 char *repo, *abspath;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
254 char *nargv[6];
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
255 struct stat st;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
256 size_t repolen;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
257 int i;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
258
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
259 /*
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
260 * check argv for looking okay. we should be invoked with argv
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
261 * resembling like this:
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
262 *
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
263 * hgsh
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
264 * -c
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
265 * hg -R some/path serve --stdio
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
266 *
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
267 * the "-c" is added by sshd, because it thinks we are login shell.
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
268 */
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
269
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
270 if (argc != 3) {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
271 goto badargs;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
272 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
273
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
274 if (strcmp(argv[1], "-c") != 0) {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
275 goto badargs;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
276 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
277
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
278 if (sscanf(argv[2], "hg -R %as serve --stdio", &repo) != 1) {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
279 goto badargs;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
280 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
281
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
282 repolen = repo ? strlen(repo) : 0;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
283
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
284 if (repolen == 0) {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
285 goto badargs;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
286 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
287
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
288 if (hg_root) {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
289 if (asprintf(&abspath, "%s/%s/.hg/data", hg_root, repo) == -1) {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
290 goto badargs;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
291 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
292
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
293 /*
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
294 * attempt to stop break out from inside the repository tree. could
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
295 * do something more clever here, because e.g. we could traverse a
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
296 * symlink that looks safe, but really breaks us out of tree.
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
297 */
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
298
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
299 if (strstr(abspath, "/../") != NULL) {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
300 goto badargs;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
301 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
302
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
303 /* verify that we really are looking at valid repo. */
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
304
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
305 if (stat(abspath, &st) == -1) {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
306 perror(repo);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
307 exit(EX_DATAERR);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
308 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
309
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
310 if (chdir(hg_root) == -1) {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
311 perror(hg_root);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
312 exit(EX_SOFTWARE);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
313 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
314 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
315
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
316 i = 0;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
317 nargv[i++] = HG;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
318 nargv[i++] = "-R";
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
319 nargv[i++] = repo;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
320 nargv[i++] = "serve";
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
321 nargv[i++] = "--stdio";
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
322 nargv[i] = NULL;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
323
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
324 if (debug) {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
325 print_cmdline(i, nargv);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
326 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
327
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
328 execv(HG, nargv);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
329 perror(HG);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
330 exit(EX_UNAVAILABLE);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
331
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
332 badargs:
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
333 /* print useless error message. */
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
334
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
335 usage("invalid arguments", EX_DATAERR);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
336 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
337
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
338 int main(int argc, char **argv)
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
339 {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
340 char host[1024];
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
341 char *c;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
342
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
343 if (gethostname(host, sizeof(host)) == -1) {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
344 perror("gethostname");
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
345 exit(EX_OSERR);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
346 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
347
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
348 if ((c = strchr(host, '.')) != NULL) {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
349 *c = '\0';
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
350 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
351
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
352 if (getenv("SSH_CLIENT")) {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
353 char *hg_gateway = HG_GATEWAY;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
354 char *hg_host = HG_HOST;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
355
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
356 if (hg_gateway && strcmp(host, hg_gateway) == 0) {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
357 forward_through_gateway(argc, argv);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
358 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
359
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
360 if (hg_host && strcmp(host, hg_host) != 0) {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
361 usage("invoked on unexpected host", EX_USAGE);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
362 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
363
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
364 serve_data(argc, argv);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
365 } else if (HG_SHELL) {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
366 run_shell(argc, argv);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
367 } else {
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
368 usage("invalid arguments", EX_DATAERR);
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
369 }
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
370
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
371 return 0;
dbbe7f72d15a contrib: add restricted shell.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
372 }