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Annotation of src/usr.bin/cvs/server.c, Revision 1.23

1.23    ! xsa         1: /*     $OpenBSD: server.c,v 1.22 2005/08/10 14:49:20 xsa Exp $ */
1.1       jfb         2: /*
                      3:  * Copyright (c) 2004 Jean-Francois Brousseau <jfb@openbsd.org>
1.6       tedu        4:  * All rights reserved.
1.1       jfb         5:  *
1.6       tedu        6:  * Redistribution and use in source and binary forms, with or without
                      7:  * modification, are permitted provided that the following conditions
                      8:  * are met:
1.1       jfb         9:  *
1.6       tedu       10:  * 1. Redistributions of source code must retain the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer.
1.1       jfb        12:  * 2. The name of the author may not be used to endorse or promote products
1.6       tedu       13:  *    derived from this software without specific prior written permission.
1.1       jfb        14:  *
                     15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
                     16:  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
                     17:  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
                     18:  * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
                     19:  * EXEMPLARY, OR CONSEQUENTIAL  DAMAGES (INCLUDING, BUT NOT LIMITED TO,
                     20:  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
                     21:  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
                     22:  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
                     23:  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
1.6       tedu       24:  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.1       jfb        25:  */
                     26:
                     27: #include <sys/types.h>
1.14      joris      28: #include <sys/stat.h>
1.1       jfb        29:
1.18      xsa        30: #include <errno.h>
                     31: #include <stdio.h>
1.1       jfb        32: #include <stdlib.h>
1.18      xsa        33: #include <string.h>
1.1       jfb        34: #include <unistd.h>
                     35:
                     36: #include "cvs.h"
                     37: #include "log.h"
1.5       jfb        38: #include "proto.h"
1.1       jfb        39:
                     40:
                     41: /* argument vector built by the `Argument' and `Argumentx' requests */
                     42: char   **cvs_args;
1.6       tedu       43: u_int   cvs_nbarg = 0;
1.1       jfb        44: u_int   cvs_utf8ok = 0;
1.17      jfb        45: u_int   cvs_case = 0;
1.8       joris      46:
1.17      jfb        47: struct cvs_cmd cvs_cmd_server = {
                     48:        CVS_OP_SERVER, 0, "server",
                     49:        { },
                     50:        "Server mode",
                     51:        "",
                     52:        "",
                     53:        NULL,
                     54:        0,
                     55:        NULL, NULL, NULL, NULL, NULL, NULL,
                     56:        0
                     57: };
1.1       jfb        58:
1.14      joris      59: char cvs_server_tmpdir[MAXPATHLEN];
                     60:
1.1       jfb        61: /*
                     62:  * cvs_server()
                     63:  *
                     64:  * Implement the `cvs server' command.  As opposed to the general method of
                     65:  * CVS client/server implementation, the cvs program merely acts as a
                     66:  * redirector to the cvs daemon for most of the tasks.
                     67:  *
                     68:  * The `cvs server' command is only used on the server side of a remote
                     69:  * cvs command.  With this command, the cvs program starts listening on
                     70:  * standard input for CVS protocol requests.
                     71:  */
                     72: int
                     73: cvs_server(int argc, char **argv)
                     74: {
1.14      joris      75:        int l, ret;
1.5       jfb        76:        size_t len;
1.9       joris      77:        char reqbuf[512];
1.1       jfb        78:
                     79:        if (argc != 1) {
1.13      joris      80:                return (CVS_EX_USAGE);
1.1       jfb        81:        }
                     82:
1.5       jfb        83:        /* make sure standard in and standard out are line-buffered */
1.23    ! xsa        84:        (void)setvbuf(stdin, NULL, _IOLBF, (size_t)0);
        !            85:        (void)setvbuf(stdout, NULL, _IOLBF, (size_t)0);
1.5       jfb        86:
1.14      joris      87:        /* create the temporary directory */
                     88:        l = snprintf(cvs_server_tmpdir, sizeof(cvs_server_tmpdir),
1.21      xsa        89:            "%s/cvs-serv%d", cvs_tmpdir, getpid());
1.14      joris      90:        if (l == -1 || l >= (int)sizeof(cvs_server_tmpdir)) {
                     91:                errno = ENAMETOOLONG;
                     92:                cvs_log(LP_ERRNO, "%s", cvs_server_tmpdir);
                     93:                return (CVS_EX_DATA);
                     94:        }
                     95:
                     96:        if (mkdir(cvs_server_tmpdir, 0700) == -1) {
                     97:                cvs_log(LP_ERRNO, "failed to create temporary directory '%s'",
                     98:                    cvs_server_tmpdir);
1.16      joris      99:                return (CVS_EX_FILE);
1.14      joris     100:        }
                    101:
1.19      xsa       102:        if (cvs_chdir(cvs_server_tmpdir) == -1)
1.16      joris     103:                return (CVS_EX_FILE);
1.14      joris     104:
1.1       jfb       105:        for (;;) {
1.22      xsa       106:                if (fgets(reqbuf, (int)sizeof(reqbuf), stdin) == NULL) {
1.5       jfb       107:                        if (feof(stdin))
                    108:                                break;
                    109:                        else if (ferror(stdin))
1.13      joris     110:                                return (CVS_EX_DATA);
1.1       jfb       111:                }
                    112:
1.5       jfb       113:                len = strlen(reqbuf);
                    114:                if (len == 0)
                    115:                        continue;
                    116:                else if (reqbuf[len - 1] != '\n') {
                    117:                        cvs_log(LP_ERR, "truncated request");
1.13      joris     118:                        return (CVS_EX_PROTO);
1.5       jfb       119:                }
                    120:                reqbuf[--len] = '\0';
1.1       jfb       121:
1.5       jfb       122:                cvs_req_handle(reqbuf);
1.1       jfb       123:
                    124:
                    125:        }
                    126:
1.14      joris     127:        /* cleanup the temporary tree */
1.20      xsa       128:        ret = cvs_rmdir(cvs_server_tmpdir);
1.14      joris     129:
                    130:        return (ret);
1.1       jfb       131: }