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1.7 ! tedu 1: /* $OpenBSD: req.c,v 1.6 2004/12/06 21:03:12 deraadt Exp $ */
1.1 jfb 2: /*
3: * Copyright (c) 2004 Jean-Francois Brousseau <jfb@openbsd.org>
4: * All rights reserved.
5: *
6: * Redistribution and use in source and binary forms, with or without
7: * modification, are permitted provided that the following conditions
8: * are met:
9: *
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. The name of the author may not be used to endorse or promote products
13: * derived from this software without specific prior written permission.
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
24: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25: */
26:
27:
28: #include <sys/types.h>
29: #include <sys/stat.h>
30:
31: #include <fcntl.h>
32: #include <stdio.h>
33: #include <errno.h>
34: #include <stdlib.h>
35: #include <unistd.h>
36: #include <signal.h>
37: #include <string.h>
38: #include <sysexits.h>
39: #ifdef CVS_ZLIB
40: #include <zlib.h>
41: #endif
42:
43: #include "buf.h"
44: #include "cvs.h"
45: #include "log.h"
46: #include "file.h"
47: #include "proto.h"
48:
49:
50: extern int verbosity;
51: extern int cvs_compress;
52: extern char *cvs_rsh;
53: extern int cvs_trace;
54: extern int cvs_nolog;
55: extern int cvs_readonly;
56:
57:
58: static int cvs_req_root (int, char *);
1.4 jfb 59: static int cvs_req_validreq (int, char *);
60: static int cvs_req_validresp (int, char *);
1.1 jfb 61: static int cvs_req_directory (int, char *);
1.5 jfb 62: static int cvs_req_case (int, char *);
1.2 jfb 63: static int cvs_req_argument (int, char *);
1.3 jfb 64: static int cvs_req_globalopt (int, char *);
1.1 jfb 65: static int cvs_req_version (int, char *);
66:
67:
68: struct cvs_reqhdlr {
69: int (*hdlr)(int, char *);
70: } cvs_req_swtab[CVS_REQ_MAX + 1] = {
71: { NULL },
72: { cvs_req_root },
1.4 jfb 73: { cvs_req_validreq },
74: { cvs_req_validresp },
1.1 jfb 75: { cvs_req_directory },
76: { NULL },
77: { NULL },
78: { NULL },
79: { NULL },
80: { NULL },
81: { NULL }, /* 10 */
82: { NULL },
83: { NULL },
84: { NULL },
85: { NULL },
86: { NULL },
87: { NULL },
88: { NULL },
1.5 jfb 89: { cvs_req_case },
1.1 jfb 90: { NULL },
1.2 jfb 91: { cvs_req_argument }, /* 20 */
92: { cvs_req_argument },
1.3 jfb 93: { cvs_req_globalopt },
1.1 jfb 94: { NULL },
95: { NULL },
96: { NULL },
97: { NULL },
98: { NULL },
99: { NULL },
100: { NULL },
101: { NULL }, /* 30 */
102: { NULL },
103: { NULL },
104: { NULL },
105: { NULL },
106: { NULL },
107: { NULL },
108: { NULL },
109: { NULL },
110: { NULL },
111: { NULL }, /* 40 */
112: { NULL },
113: { NULL },
114: { NULL },
115: { NULL },
116: { NULL },
117: { NULL },
118: { NULL },
119: { NULL },
120: { NULL },
121: { NULL }, /* 50 */
122: { NULL },
123: { NULL },
124: { NULL },
125: { NULL },
126: { NULL },
127: { NULL },
128: { NULL },
129: { NULL },
130: { NULL },
131: { NULL }, /* 60 */
132: { NULL },
133: { NULL },
134: { NULL },
135: { NULL },
136: { NULL },
137: { NULL },
138: { NULL },
139: { NULL },
140: { cvs_req_version },
141: };
142:
143:
144:
145: /*
1.2 jfb 146: * Argument array built by `Argument' and `Argumentx' requests.
147: */
148:
149: static char *cvs_req_args[CVS_PROTO_MAXARG];
150: static int cvs_req_nargs = 0;
151:
152:
153: /*
1.1 jfb 154: * cvs_req_handle()
155: *
156: * Generic request handler dispatcher. The handler expects the first line
157: * of the command as single argument.
158: * Returns the return value of the command on success, or -1 on failure.
159: */
160: int
161: cvs_req_handle(char *line)
162: {
163: char *cp, *cmd;
164: struct cvs_req *req;
165:
166: cmd = line;
167:
168: cp = strchr(cmd, ' ');
169: if (cp != NULL)
170: *(cp++) = '\0';
171:
172: req = cvs_req_getbyname(cmd);
173: if (req == NULL)
174: return (-1);
175: else if (cvs_req_swtab[req->req_id].hdlr == NULL) {
176: cvs_log(LP_ERRNO, "handler for `%s' not implemented", cmd);
177: return (-1);
178: }
179:
180: return (*cvs_req_swtab[req->req_id].hdlr)(req->req_id, cp);
181: }
182:
183:
184: static int
185: cvs_req_root(int reqid, char *line)
186: {
187:
1.4 jfb 188: return (0);
189: }
190:
191:
192: static int
193: cvs_req_validreq(int reqid, char *line)
194: {
195: char *vreq;
196:
197: vreq = cvs_req_getvalid();
198: if (vreq == NULL)
199: return (-1);
200:
201: cvs_sendresp(CVS_RESP_VALIDREQ, vreq);
202:
203: return (0);
204: }
205:
206: static int
207: cvs_req_validresp(int reqid, char *line)
208: {
209: char *sp, *ep;
210: struct cvs_resp *resp;
1.1 jfb 211:
1.4 jfb 212: sp = line;
213: do {
214: ep = strchr(sp, ' ');
215: if (ep != NULL)
216: *(ep++) = '\0';
217:
218: resp = cvs_resp_getbyname(sp);
219: if (resp != NULL)
220: ;
221:
222: if (ep != NULL)
223: sp = ep + 1;
224: } while (ep != NULL);
1.1 jfb 225:
226: return (0);
227: }
228:
229: static int
230: cvs_req_directory(int reqid, char *line)
231: {
232:
1.5 jfb 233: return (0);
234: }
235:
236: /*
237: * cvs_req_case()
238: *
239: * Handler for the `Case' requests, which toggles case sensitivity ON or OFF
240: */
241: static int
242: cvs_req_case(int reqid, char *line)
243: {
244: cvs_nocase = 1;
1.2 jfb 245: return (0);
246: }
247:
248:
249: static int
250: cvs_req_argument(int reqid, char *line)
251: {
252: char *nap;
253:
254: if (cvs_req_nargs == CVS_PROTO_MAXARG) {
255: cvs_log(LP_ERR, "too many arguments");
256: return (-1);
257: }
258:
259: if (reqid == CVS_REQ_ARGUMENT) {
260: cvs_req_args[cvs_req_nargs] = strdup(line);
261: if (cvs_req_args[cvs_req_nargs] == NULL) {
262: cvs_log(LP_ERRNO, "failed to copy argument");
263: return (-1);
264: }
265: cvs_req_nargs++;
1.6 deraadt 266: } else if (reqid == CVS_REQ_ARGUMENTX) {
1.2 jfb 267: if (cvs_req_nargs == 0)
268: cvs_log(LP_WARN, "no argument to append to");
269: else {
270: asprintf(&nap, "%s%s", cvs_req_args[cvs_req_nargs - 1],
271: line);
272: if (nap == NULL) {
273: cvs_log(LP_ERRNO,
274: "failed to append to argument");
275: return (-1);
276: }
277: free(cvs_req_args[cvs_req_nargs - 1]);
278: cvs_req_args[cvs_req_nargs - 1] = nap;
279: }
1.3 jfb 280: }
281:
282: return (0);
283: }
284:
285:
286: static int
287: cvs_req_globalopt(int reqid, char *line)
288: {
289: if ((*line != '-') || (*(line + 2) != '\0')) {
290: cvs_log(LP_ERR,
291: "invalid `Global_option' request format");
292: return (-1);
293: }
294:
295: switch (*(line + 1)) {
296: case 'l':
297: cvs_nolog = 1;
298: break;
299: case 'n':
300: break;
301: case 'Q':
302: verbosity = 0;
303: break;
304: case 'q':
305: if (verbosity > 1)
306: verbosity = 1;
307: break;
308: case 'r':
309: cvs_readonly = 1;
310: break;
311: case 't':
312: cvs_trace = 1;
313: break;
314: default:
315: cvs_log(LP_ERR, "unknown global option `%s'", line);
316: return (-1);
1.2 jfb 317: }
1.1 jfb 318:
319: return (0);
320: }
321:
322:
323: static int
324: cvs_req_version(int reqid, char *line)
325: {
326: cvs_printf("%s\n", CVS_VERSION);
327: return (0);
328: }