Annotation of src/usr.bin/cvs/proto.c, Revision 1.57
1.57 ! joris 1: /* $OpenBSD: proto.c,v 1.56 2005/05/31 08:58:48 xsa 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: * CVS client/server protocol
28: * ==========================
29: *
30: * The following code implements the CVS client/server protocol, which is
31: * documented at the following URL:
32: * http://www.loria.fr/~molli/cvs/doc/cvsclient_toc.html
33: *
34: * The protocol is split up into two parts; the first part is the client side
35: * of things and is composed of all the response handlers, which are all named
36: * with a prefix of "cvs_resp_". The second part is the set of request
37: * handlers used by the server. These handlers process the request and
38: * generate the appropriate response to send back. The prefix for request
39: * handlers is "cvs_req_".
40: *
41: */
42:
43: #include <sys/types.h>
44: #include <sys/stat.h>
45:
1.56 xsa 46: #include <errno.h>
1.1 jfb 47: #include <fcntl.h>
1.56 xsa 48: #include <libgen.h>
49: #include <pwd.h>
1.1 jfb 50: #include <stdio.h>
51: #include <stdlib.h>
1.56 xsa 52: #include <string.h>
1.1 jfb 53: #include <unistd.h>
54:
55: #include "cvs.h"
56: #include "log.h"
1.13 jfb 57: #include "proto.h"
1.1 jfb 58:
59:
1.11 jfb 60: /* request flags */
61: #define CVS_REQF_RESP 0x01
62:
63:
1.13 jfb 64: static int cvs_initlog (void);
1.1 jfb 65:
1.18 jfb 66: struct cvs_req cvs_requests[] = {
67: { CVS_REQ_DIRECTORY, "Directory", 0 },
68: { CVS_REQ_MAXDOTDOT, "Max-dotdot", 0 },
69: { CVS_REQ_STATICDIR, "Static-directory", 0 },
70: { CVS_REQ_STICKY, "Sticky", 0 },
71: { CVS_REQ_ENTRY, "Entry", 0 },
72: { CVS_REQ_ENTRYEXTRA, "EntryExtra", 0 },
73: { CVS_REQ_CHECKINTIME, "Checkin-time", 0 },
74: { CVS_REQ_MODIFIED, "Modified", 0 },
75: { CVS_REQ_ISMODIFIED, "Is-modified", 0 },
76: { CVS_REQ_UNCHANGED, "Unchanged", 0 },
77: { CVS_REQ_USEUNCHANGED, "UseUnchanged", 0 },
78: { CVS_REQ_NOTIFY, "Notify", 0 },
79: { CVS_REQ_NOTIFYUSER, "NotifyUser", 0 },
80: { CVS_REQ_QUESTIONABLE, "Questionable", 0 },
81: { CVS_REQ_CASE, "Case", 0 },
82: { CVS_REQ_UTF8, "Utf8", 0 },
83: { CVS_REQ_ARGUMENT, "Argument", 0 },
84: { CVS_REQ_ARGUMENTX, "Argumentx", 0 },
85: { CVS_REQ_GLOBALOPT, "Global_option", 0 },
86: { CVS_REQ_GZIPSTREAM, "Gzip-stream", 0 },
87: { CVS_REQ_READCVSRC2, "read-cvsrc2", 0 },
88: { CVS_REQ_READWRAP, "read-cvswrappers", 0 },
89: { CVS_REQ_READIGNORE, "read-cvsignore", 0 },
90: { CVS_REQ_ERRIFREADER, "Error-If-Reader", 0 },
91: { CVS_REQ_VALIDRCSOPT, "Valid-RcsOptions", 0 },
92: { CVS_REQ_SET, "Set", 0 },
93: { CVS_REQ_XPANDMOD, "expand-modules", CVS_REQF_RESP },
1.26 jfb 94: { CVS_REQ_LOG, "log", CVS_REQF_RESP },
1.18 jfb 95: { CVS_REQ_CO, "co", CVS_REQF_RESP },
96: { CVS_REQ_EXPORT, "export", CVS_REQF_RESP },
1.26 jfb 97: { CVS_REQ_ANNOTATE, "annotate", CVS_REQF_RESP },
98: { CVS_REQ_RDIFF, "rdiff", CVS_REQF_RESP },
1.18 jfb 99: { CVS_REQ_RTAG, "rtag", CVS_REQF_RESP },
100: { CVS_REQ_INIT, "init", CVS_REQF_RESP },
101: { CVS_REQ_STATUS, "status", CVS_REQF_RESP },
102: { CVS_REQ_UPDATE, "update", CVS_REQF_RESP },
1.26 jfb 103: { CVS_REQ_HISTORY, "history", CVS_REQF_RESP },
1.18 jfb 104: { CVS_REQ_IMPORT, "import", CVS_REQF_RESP },
105: { CVS_REQ_ADD, "add", CVS_REQF_RESP },
106: { CVS_REQ_REMOVE, "remove", CVS_REQF_RESP },
107: { CVS_REQ_RELEASE, "release", CVS_REQF_RESP },
108: { CVS_REQ_ROOT, "Root", 0 },
109: { CVS_REQ_VALIDRESP, "Valid-responses", 0 },
110: { CVS_REQ_VALIDREQ, "valid-requests", CVS_REQF_RESP },
111: { CVS_REQ_VERSION, "version", CVS_REQF_RESP },
112: { CVS_REQ_NOOP, "noop", CVS_REQF_RESP },
113: { CVS_REQ_DIFF, "diff", CVS_REQF_RESP },
1.29 jfb 114: { CVS_REQ_CI, "ci", CVS_REQF_RESP },
1.35 jfb 115: { CVS_REQ_TAG, "tag", CVS_REQF_RESP },
1.41 joris 116: { CVS_REQ_ADMIN, "admin", CVS_REQF_RESP },
1.1 jfb 117: };
118:
1.18 jfb 119: struct cvs_resp cvs_responses[] = {
120: { CVS_RESP_OK, "ok" },
121: { CVS_RESP_ERROR, "error" },
122: { CVS_RESP_VALIDREQ, "Valid-requests" },
123: { CVS_RESP_M, "M" },
124: { CVS_RESP_MBINARY, "Mbinary" },
125: { CVS_RESP_MT, "MT" },
126: { CVS_RESP_E, "E" },
127: { CVS_RESP_F, "F" },
128: { CVS_RESP_CREATED, "Created" },
129: { CVS_RESP_UPDATED, "Updated" },
130: { CVS_RESP_UPDEXIST, "Update-existing" },
131: { CVS_RESP_MERGED, "Merged" },
132: { CVS_RESP_REMOVED, "Removed" },
133: { CVS_RESP_CKSUM, "Checksum" },
134: { CVS_RESP_CLRSTATDIR, "Clear-static-directory" },
135: { CVS_RESP_SETSTATDIR, "Set-static-directory" },
136: { CVS_RESP_NEWENTRY, "New-entry" },
137: { CVS_RESP_CHECKEDIN, "Checked-in" },
138: { CVS_RESP_MODE, "Mode" },
139: { CVS_RESP_MODTIME, "Mod-time" },
140: { CVS_RESP_MODXPAND, "Module-expansion" },
141: { CVS_RESP_SETSTICKY, "Set-sticky" },
142: { CVS_RESP_CLRSTICKY, "Clear-sticky" },
143: { CVS_RESP_RCSDIFF, "Rcs-diff" },
144: { CVS_RESP_TEMPLATE, "Template" },
1.34 jfb 145: { CVS_RESP_COPYFILE, "Copy-file" },
1.1 jfb 146: };
147:
1.17 jfb 148: #define CVS_NBREQ (sizeof(cvs_requests)/sizeof(cvs_requests[0]))
149: #define CVS_NBRESP (sizeof(cvs_responses)/sizeof(cvs_responses[0]))
150:
151: /* hack to receive the remote version without outputting it */
1.18 jfb 152: u_int cvs_version_sent = 0;
1.17 jfb 153:
1.13 jfb 154: static char cvs_proto_buf[4096];
155:
156: /*
1.37 david 157: * Output files for protocol logging when the CVS_CLIENT_LOG environment
1.13 jfb 158: * variable is set.
159: */
160: static int cvs_server_logon = 0;
161: static FILE *cvs_server_inlog = NULL;
162: static FILE *cvs_server_outlog = NULL;
163:
1.28 jfb 164: static pid_t cvs_subproc_pid;
165:
1.32 jfb 166: /* last directory sent with cvs_senddir() */
167: static char cvs_lastdir[MAXPATHLEN] = "";
168:
1.13 jfb 169:
170: /*
171: * cvs_connect()
172: *
173: * Open a client connection to the cvs server whose address is given in
174: * the <root> variable. The method used to connect depends on the
175: * setting of the CVS_RSH variable.
1.17 jfb 176: * Once the connection has been established, we first send the list of
177: * responses we support and request the list of supported requests from the
178: * server. Then, a version request is sent and various global flags are sent.
1.13 jfb 179: * Returns 0 on success, or -1 on failure.
180: */
181: int
182: cvs_connect(struct cvsroot *root)
183: {
1.20 jfb 184: int argc, infd[2], outfd[2], errfd[2];
1.13 jfb 185: char *argv[16], *cvs_server_cmd, *vresp;
186:
1.36 jfb 187: if (root->cr_method == CVS_METHOD_PSERVER) {
188: cvs_log(LP_ERR, "no pserver support due to security issues");
189: return (-1);
190: } else if ((root->cr_method == CVS_METHOD_KSERVER) ||
191: (root->cr_method == CVS_METHOD_GSERVER) ||
192: (root->cr_method == CVS_METHOD_EXT) ||
193: (root->cr_method == CVS_METHOD_FORK)) {
194: cvs_log(LP_ERR, "connection method not supported yet");
195: return (-1);
196: }
1.33 jfb 197:
198: if (root->cr_flags & CVS_ROOT_CONNECTED) {
199: cvs_log(LP_NOTICE, "already connected to CVSROOT");
200: return (0);
201: }
202:
1.13 jfb 203: if (pipe(infd) == -1) {
204: cvs_log(LP_ERRNO,
205: "failed to create input pipe for client connection");
206: return (-1);
207: }
208:
209: if (pipe(outfd) == -1) {
210: cvs_log(LP_ERRNO,
211: "failed to create output pipe for client connection");
212: (void)close(infd[0]);
213: (void)close(infd[1]);
214: return (-1);
215: }
216:
1.20 jfb 217: if (pipe(errfd) == -1) {
218: cvs_log(LP_ERRNO,
219: "failed to create error pipe for client connection");
220: (void)close(infd[0]);
221: (void)close(infd[1]);
222: (void)close(outfd[0]);
223: (void)close(outfd[1]);
224: return (-1);
225: }
226:
1.28 jfb 227: cvs_subproc_pid = fork();
228: if (cvs_subproc_pid == -1) {
1.13 jfb 229: cvs_log(LP_ERRNO, "failed to fork for cvs server connection");
230: return (-1);
1.30 deraadt 231: } else if (cvs_subproc_pid == 0) {
1.13 jfb 232: if ((dup2(infd[0], STDIN_FILENO) == -1) ||
1.23 jfb 233: (dup2(outfd[1], STDOUT_FILENO) == -1)) {
1.13 jfb 234: cvs_log(LP_ERRNO,
235: "failed to setup standard streams for cvs server");
236: return (-1);
237: }
238: (void)close(infd[1]);
239: (void)close(outfd[0]);
1.20 jfb 240: (void)close(errfd[0]);
1.13 jfb 241:
242: argc = 0;
243: argv[argc++] = cvs_rsh;
244:
245: if (root->cr_user != NULL) {
246: argv[argc++] = "-l";
247: argv[argc++] = root->cr_user;
248: }
249:
250: cvs_server_cmd = getenv("CVS_SERVER");
251: if (cvs_server_cmd == NULL)
1.20 jfb 252: cvs_server_cmd = CVS_SERVER_DEFAULT;
1.13 jfb 253:
254: argv[argc++] = root->cr_host;
255: argv[argc++] = cvs_server_cmd;
256: argv[argc++] = "server";
257: argv[argc] = NULL;
258:
259: execvp(argv[0], argv);
260: cvs_log(LP_ERRNO, "failed to exec");
1.46 xsa 261: exit(1);
1.13 jfb 262: }
263:
264: /* we are the parent */
265: (void)close(infd[0]);
266: (void)close(outfd[1]);
1.20 jfb 267: (void)close(errfd[1]);
1.13 jfb 268:
269: root->cr_srvin = fdopen(infd[1], "w");
270: if (root->cr_srvin == NULL) {
271: cvs_log(LP_ERRNO, "failed to create pipe stream");
272: return (-1);
273: }
274:
275: root->cr_srvout = fdopen(outfd[0], "r");
276: if (root->cr_srvout == NULL) {
277: cvs_log(LP_ERRNO, "failed to create pipe stream");
1.20 jfb 278: return (-1);
279: }
280:
1.13 jfb 281: /* make the streams line-buffered */
282: (void)setvbuf(root->cr_srvin, NULL, _IOLBF, 0);
283: (void)setvbuf(root->cr_srvout, NULL, _IOLBF, 0);
284:
285: cvs_initlog();
286:
287: /*
288: * Send the server the list of valid responses, then ask for valid
289: * requests.
290: */
291:
1.40 jfb 292: if ((vresp = cvs_resp_getvalid()) == NULL) {
1.13 jfb 293: cvs_log(LP_ERR, "can't generate list of valid responses");
294: return (-1);
295: }
296:
297: if (cvs_sendreq(root, CVS_REQ_VALIDRESP, vresp) < 0) {
1.40 jfb 298: cvs_log(LP_ERR, "failed to get valid responses");
299: free(vresp);
300: return (-1);
1.13 jfb 301: }
302: free(vresp);
303:
304: if (cvs_sendreq(root, CVS_REQ_VALIDREQ, NULL) < 0) {
305: cvs_log(LP_ERR, "failed to get valid requests from server");
306: return (-1);
307: }
308:
1.54 joris 309: /* send the CVSROOT to the server unless it's an init */
310: if ((cvs_cmdop != CVS_OP_INIT) &&
311: (cvs_sendreq(root, CVS_REQ_ROOT, root->cr_dir) < 0))
312: return (-1);
313:
1.40 jfb 314: /* don't fail if this request doesn't work */
1.17 jfb 315: if (cvs_sendreq(root, CVS_REQ_VERSION, NULL) < 0)
1.40 jfb 316: cvs_log(LP_WARN, "failed to get remote version");
1.17 jfb 317:
1.13 jfb 318: /* now share our global options with the server */
1.40 jfb 319: if ((verbosity == 1) &&
320: (cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-q") < 0))
321: return (-1);
322: else if ((verbosity == 0) &&
323: (cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-Q") < 0))
324: return (-1);
325:
1.53 jfb 326: if (cvs_noexec && (cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-n") < 0))
327: return (-1);
1.40 jfb 328: if (cvs_nolog && (cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-l") < 0))
329: return (-1);
330: if (cvs_readonly && (cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-r") < 0))
331: return (-1);
332: if (cvs_trace && (cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-t") < 0))
1.13 jfb 333: return (-1);
334:
335: /* not sure why, but we have to send this */
336: if (cvs_sendreq(root, CVS_REQ_USEUNCHANGED, NULL) < 0)
337: return (-1);
338:
339: cvs_log(LP_DEBUG, "connected to %s", root->cr_host);
340:
1.33 jfb 341: root->cr_flags |= CVS_ROOT_CONNECTED;
342:
1.13 jfb 343: return (0);
344: }
345:
346:
347: /*
348: * cvs_disconnect()
349: *
350: * Disconnect from the cvs server.
351: */
352: void
353: cvs_disconnect(struct cvsroot *root)
354: {
1.33 jfb 355: if (!(root->cr_flags & CVS_ROOT_CONNECTED))
356: return;
357:
1.13 jfb 358: cvs_log(LP_DEBUG, "closing connection to %s", root->cr_host);
359: if (root->cr_srvin != NULL) {
360: (void)fclose(root->cr_srvin);
361: root->cr_srvin = NULL;
362: }
363: if (root->cr_srvout != NULL) {
364: (void)fclose(root->cr_srvout);
365: root->cr_srvout = NULL;
366: }
1.33 jfb 367:
368: root->cr_flags &= ~CVS_ROOT_CONNECTED;
1.13 jfb 369: }
370:
1.1 jfb 371:
372: /*
373: * cvs_req_getbyid()
374: *
375: */
1.13 jfb 376: struct cvs_req*
1.1 jfb 377: cvs_req_getbyid(int reqid)
378: {
379: u_int i;
380:
381: for (i = 0; i < CVS_NBREQ; i++)
382: if (cvs_requests[i].req_id == reqid)
1.13 jfb 383: return &(cvs_requests[i]);
1.31 tedu 384:
1.1 jfb 385: return (NULL);
386: }
387:
388:
389: /*
390: * cvs_req_getbyname()
391: */
1.13 jfb 392: struct cvs_req*
1.1 jfb 393: cvs_req_getbyname(const char *rname)
394: {
395: u_int i;
396:
397: for (i = 0; i < CVS_NBREQ; i++)
398: if (strcmp(cvs_requests[i].req_str, rname) == 0)
1.13 jfb 399: return &(cvs_requests[i]);
1.1 jfb 400:
1.13 jfb 401: return (NULL);
1.1 jfb 402: }
403:
404:
405: /*
406: * cvs_req_getvalid()
407: *
408: * Build a space-separated list of all the requests that this protocol
409: * implementation supports.
410: */
411: char*
412: cvs_req_getvalid(void)
413: {
414: u_int i;
415: size_t len;
416: char *vrstr;
417: BUF *buf;
418:
419: buf = cvs_buf_alloc(512, BUF_AUTOEXT);
420: if (buf == NULL)
421: return (NULL);
422:
423: cvs_buf_set(buf, cvs_requests[0].req_str,
424: strlen(cvs_requests[0].req_str), 0);
425:
426: for (i = 1; i < CVS_NBREQ; i++) {
427: if ((cvs_buf_putc(buf, ' ') < 0) ||
428: (cvs_buf_append(buf, cvs_requests[i].req_str,
429: strlen(cvs_requests[i].req_str)) < 0)) {
430: cvs_buf_free(buf);
431: return (NULL);
432: }
433: }
434:
435: /* NUL-terminate */
436: if (cvs_buf_putc(buf, '\0') < 0) {
437: cvs_buf_free(buf);
438: return (NULL);
439: }
440:
441: len = cvs_buf_size(buf);
442: vrstr = (char *)malloc(len);
1.27 jfb 443: if (vrstr == NULL) {
444: cvs_buf_free(buf);
445: return (NULL);
446: }
1.1 jfb 447:
448: cvs_buf_copy(buf, 0, vrstr, len);
449: cvs_buf_free(buf);
450:
451: return (vrstr);
452: }
453:
454:
455: /*
456: * cvs_resp_getbyid()
457: *
458: */
1.13 jfb 459: struct cvs_resp*
1.1 jfb 460: cvs_resp_getbyid(int respid)
461: {
462: u_int i;
463:
1.44 tedu 464: for (i = 0; i < CVS_NBRESP; i++)
1.13 jfb 465: if (cvs_responses[i].resp_id == (u_int)respid)
466: return &(cvs_responses[i]);
1.31 tedu 467:
1.1 jfb 468: return (NULL);
469: }
470:
471:
472: /*
473: * cvs_resp_getbyname()
474: */
1.13 jfb 475: struct cvs_resp*
1.1 jfb 476: cvs_resp_getbyname(const char *rname)
477: {
478: u_int i;
479:
1.44 tedu 480: for (i = 0; i < CVS_NBRESP; i++)
1.1 jfb 481: if (strcmp(cvs_responses[i].resp_str, rname) == 0)
1.13 jfb 482: return &(cvs_responses[i]);
1.1 jfb 483:
1.13 jfb 484: return (NULL);
1.1 jfb 485: }
486:
487:
488: /*
489: * cvs_resp_getvalid()
490: *
491: * Build a space-separated list of all the responses that this protocol
492: * implementation supports.
493: */
494: char*
495: cvs_resp_getvalid(void)
496: {
497: u_int i;
498: size_t len;
499: char *vrstr;
500: BUF *buf;
501:
502: buf = cvs_buf_alloc(512, BUF_AUTOEXT);
503: if (buf == NULL)
504: return (NULL);
505:
506: cvs_buf_set(buf, cvs_responses[0].resp_str,
507: strlen(cvs_responses[0].resp_str), 0);
508:
509: for (i = 1; i < CVS_NBRESP; i++) {
510: if ((cvs_buf_putc(buf, ' ') < 0) ||
511: (cvs_buf_append(buf, cvs_responses[i].resp_str,
512: strlen(cvs_responses[i].resp_str)) < 0)) {
513: cvs_buf_free(buf);
514: return (NULL);
515: }
516: }
517:
518: /* NUL-terminate */
519: if (cvs_buf_putc(buf, '\0') < 0) {
520: cvs_buf_free(buf);
521: return (NULL);
522: }
523:
524: len = cvs_buf_size(buf);
525: vrstr = (char *)malloc(len);
1.27 jfb 526: if (vrstr == NULL) {
527: cvs_buf_free(buf);
528: return (NULL);
529: }
1.1 jfb 530:
531: cvs_buf_copy(buf, 0, vrstr, len);
532: cvs_buf_free(buf);
533:
534: return (vrstr);
535: }
536:
537:
538: /*
539: * cvs_sendfile()
540: *
541: * Send the mode and size of a file followed by the file's contents.
542: * Returns 0 on success, or -1 on failure.
543: */
544: int
1.13 jfb 545: cvs_sendfile(struct cvsroot *root, const char *path)
1.1 jfb 546: {
1.51 xsa 547: int fd, l;
1.1 jfb 548: ssize_t ret;
549: char buf[4096];
550: struct stat st;
551:
1.38 jfb 552: cvs_log(LP_TRACE, "Sending file `%s' to server", basename(path));
553:
1.1 jfb 554: if (stat(path, &st) == -1) {
555: cvs_log(LP_ERRNO, "failed to stat `%s'", path);
556: return (-1);
557: }
558:
1.24 jfb 559: if (cvs_modetostr(st.st_mode, buf, sizeof(buf)) < 0)
560: return (-1);
561:
1.1 jfb 562: fd = open(path, O_RDONLY, 0);
563: if (fd == -1) {
1.38 jfb 564: cvs_log(LP_ERRNO, "failed to open `%s'", path);
1.1 jfb 565: return (-1);
566: }
567:
1.38 jfb 568: if (cvs_sendln(root, buf) < 0) {
569: (void)close(fd);
570: return (-1);
571: }
1.51 xsa 572: l = snprintf(buf, sizeof(buf), "%lld\n", st.st_size);
573: if (l == -1 || l >= (int)sizeof(buf))
574: return (-1);
575:
1.38 jfb 576: if (cvs_sendln(root, buf) < 0) {
577: (void)close(fd);
578: return (-1);
579: }
1.1 jfb 580:
581: while ((ret = read(fd, buf, sizeof(buf))) != 0) {
582: if (ret == -1) {
1.24 jfb 583: (void)close(fd);
1.1 jfb 584: cvs_log(LP_ERRNO, "failed to read file `%s'", path);
585: return (-1);
586: }
587:
1.38 jfb 588: if (cvs_sendraw(root, buf, (size_t)ret) < 0) {
589: (void)close(fd);
590: return (-1);
591: }
1.1 jfb 592: }
593:
594: (void)close(fd);
595: return (0);
596: }
597:
598:
599: /*
600: * cvs_recvfile()
601: *
602: * Receive the mode and size of a file followed the file's contents and
603: * create or update the file whose path is <path> with the received
604: * information.
605: */
1.14 jfb 606: BUF*
607: cvs_recvfile(struct cvsroot *root, mode_t *mode)
1.1 jfb 608: {
609: size_t len;
610: ssize_t ret;
611: off_t fsz, cnt;
612: char buf[4096], *ep;
1.14 jfb 613: BUF *fbuf;
614:
615: fbuf = cvs_buf_alloc(sizeof(buf), BUF_AUTOEXT);
616: if (fbuf == NULL)
617: return (NULL);
1.1 jfb 618:
1.13 jfb 619: if ((cvs_getln(root, buf, sizeof(buf)) < 0) ||
1.14 jfb 620: (cvs_strtomode(buf, mode) < 0)) {
1.44 tedu 621: cvs_buf_free(fbuf);
1.14 jfb 622: return (NULL);
1.1 jfb 623: }
624:
1.50 joris 625: if (cvs_getln(root, buf, sizeof(buf)) < 0) {
626: cvs_buf_free(fbuf);
627: return (NULL);
628: }
1.1 jfb 629:
630: fsz = (off_t)strtol(buf, &ep, 10);
631: if (*ep != '\0') {
632: cvs_log(LP_ERR, "parse error in file size transmission");
1.44 tedu 633: cvs_buf_free(fbuf);
1.14 jfb 634: return (NULL);
1.1 jfb 635: }
636:
637: cnt = 0;
638: do {
639: len = MIN(sizeof(buf), (size_t)(fsz - cnt));
1.6 jfb 640: if (len == 0)
641: break;
1.13 jfb 642: ret = cvs_recvraw(root, buf, len);
1.1 jfb 643: if (ret == -1) {
1.14 jfb 644: cvs_buf_free(fbuf);
645: return (NULL);
1.1 jfb 646: }
647:
1.14 jfb 648: if (cvs_buf_append(fbuf, buf, (size_t)ret) == -1) {
649: cvs_log(LP_ERR,
650: "failed to append received file data");
651: cvs_buf_free(fbuf);
652: return (NULL);
1.1 jfb 653: }
654:
655: cnt += (off_t)ret;
656: } while (cnt < fsz);
657:
1.14 jfb 658: return (fbuf);
1.1 jfb 659: }
1.12 jfb 660:
661: /*
662: * cvs_sendreq()
663: *
664: * Send a request to the server of type <rid>, with optional arguments
665: * contained in <arg>, which should not be terminated by a newline.
666: * Returns 0 on success, or -1 on failure.
667: */
668: int
1.13 jfb 669: cvs_sendreq(struct cvsroot *root, u_int rid, const char *arg)
1.12 jfb 670: {
1.51 xsa 671: int ret, l;
1.13 jfb 672: struct cvs_req *req;
1.12 jfb 673:
674: if (root->cr_srvin == NULL) {
1.36 jfb 675: cvs_log(LP_ERR, "cannot send request %u: Not connected", rid);
1.12 jfb 676: return (-1);
677: }
678:
1.13 jfb 679: req = cvs_req_getbyid(rid);
680: if (req == NULL) {
1.12 jfb 681: cvs_log(LP_ERR, "unsupported request type %u", rid);
682: return (-1);
683: }
684:
1.18 jfb 685: /* is this request supported by the server? */
686: if (!CVS_GETVR(root, req->req_id)) {
1.57 ! joris 687: if (rid == CVS_REQ_VERSION) {
! 688: ret = cvs_sendreq(root, CVS_REQ_NOOP, arg);
! 689: } else {
! 690: cvs_log(LP_WARN,
! 691: "remote end does not support request `%s'",
! 692: req->req_str);
! 693: ret = -1;
! 694: }
! 695: return (ret);
1.18 jfb 696: }
697:
1.51 xsa 698: l = snprintf(cvs_proto_buf, sizeof(cvs_proto_buf), "%s%s%s\n",
1.13 jfb 699: req->req_str, (arg == NULL) ? "" : " ", (arg == NULL) ? "" : arg);
1.51 xsa 700: if (l == -1 || l >= (int)sizeof(cvs_proto_buf))
701: return (-1);
1.12 jfb 702:
703: if (cvs_server_inlog != NULL)
1.13 jfb 704: fputs(cvs_proto_buf, cvs_server_inlog);
1.12 jfb 705:
1.13 jfb 706: ret = fputs(cvs_proto_buf, root->cr_srvin);
1.12 jfb 707: if (ret == EOF) {
708: cvs_log(LP_ERRNO, "failed to send request to server");
709: return (-1);
710: }
1.17 jfb 711:
712: if (rid == CVS_REQ_VERSION)
713: cvs_version_sent = 1;
1.12 jfb 714:
1.13 jfb 715: if (req->req_flags & CVS_REQF_RESP)
1.12 jfb 716: ret = cvs_getresp(root);
717:
1.13 jfb 718: return (ret);
1.12 jfb 719: }
720:
721:
722: /*
723: * cvs_getresp()
724: *
725: * Get a response from the server. This call will actually read and handle
726: * responses from the server until one of the response handlers returns
1.37 david 727: * non-zero (either an error occurred or the end of the response was reached).
1.12 jfb 728: * Returns the number of handled commands on success, or -1 on failure.
729: */
730: int
1.13 jfb 731: cvs_getresp(struct cvsroot *root)
1.12 jfb 732: {
1.13 jfb 733: int nbcmd, ret;
734: size_t len;
1.12 jfb 735:
736: nbcmd = 0;
737:
738: do {
739: /* wait for incoming data */
1.13 jfb 740: if (fgets(cvs_proto_buf, sizeof(cvs_proto_buf),
1.12 jfb 741: root->cr_srvout) == NULL) {
742: if (feof(root->cr_srvout))
743: return (0);
744: cvs_log(LP_ERRNO,
745: "failed to read response from server");
746: return (-1);
747: }
748:
749: if (cvs_server_outlog != NULL)
1.13 jfb 750: fputs(cvs_proto_buf, cvs_server_outlog);
1.12 jfb 751:
1.13 jfb 752: if ((len = strlen(cvs_proto_buf)) != 0) {
1.42 joris 753: /* if len - 1 != '\n' the line is truncated */
1.43 joris 754: if (cvs_proto_buf[len - 1] == '\n')
1.13 jfb 755: cvs_proto_buf[--len] = '\0';
1.12 jfb 756: }
757:
1.13 jfb 758: ret = cvs_resp_handle(root, cvs_proto_buf);
1.12 jfb 759: nbcmd++;
760: } while (ret == 0);
761:
762: if (ret > 0)
763: ret = nbcmd;
764: return (ret);
765: }
766:
767:
768: /*
1.13 jfb 769: * cvs_getln()
770: *
1.18 jfb 771: * Get a line from the remote end and store it in <lbuf>. The terminating
1.13 jfb 772: * newline character is stripped from the result.
1.55 jfb 773: * Returns the length in bytes of the line (not including the NUL byte), or
774: * -1 on failure.
1.13 jfb 775: */
776: int
777: cvs_getln(struct cvsroot *root, char *lbuf, size_t len)
778: {
779: size_t rlen;
1.18 jfb 780: FILE *in;
1.13 jfb 781:
1.18 jfb 782: if (cvs_cmdop == CVS_OP_SERVER)
783: in = stdin;
784: else
785: in = root->cr_srvout;
786:
787: if (fgets(lbuf, len, in) == NULL) {
788: if (ferror(in)) {
789: cvs_log(LP_ERRNO, "failed to read line");
1.13 jfb 790: return (-1);
791: }
792:
1.18 jfb 793: if (feof(in))
1.13 jfb 794: *lbuf = '\0';
795: }
796:
797: if (cvs_server_outlog != NULL)
798: fputs(lbuf, cvs_server_outlog);
799:
800: rlen = strlen(lbuf);
801: if ((rlen > 0) && (lbuf[rlen - 1] == '\n'))
802: lbuf[--rlen] = '\0';
803:
1.55 jfb 804: return (rlen);
1.13 jfb 805: }
806:
1.19 jfb 807:
1.13 jfb 808: /*
1.12 jfb 809: * cvs_sendresp()
810: *
1.19 jfb 811: * Send a response of type <rid> to the client, with optional arguments
1.12 jfb 812: * contained in <arg>, which should not be terminated by a newline.
813: * Returns 0 on success, or -1 on failure.
814: */
815: int
816: cvs_sendresp(u_int rid, const char *arg)
817: {
818: int ret;
1.19 jfb 819: struct cvs_resp *resp;
1.12 jfb 820:
821: resp = cvs_resp_getbyid(rid);
1.13 jfb 822: if (resp == NULL) {
1.12 jfb 823: cvs_log(LP_ERR, "unsupported response type %u", rid);
824: return (-1);
825: }
826:
1.19 jfb 827: ret = fputs(resp->resp_str, stdout);
1.12 jfb 828: if (ret == EOF) {
829: cvs_log(LP_ERRNO, "failed to send response to client");
1.30 deraadt 830: } else {
1.19 jfb 831: if (arg != NULL) {
832: putc(' ', stdout);
833: fputs(arg, stdout);
834: }
1.12 jfb 835: putc('\n', stdout);
836: }
837: return (0);
838: }
839:
840:
1.19 jfb 841: #ifdef notyet
1.12 jfb 842: /*
843: * cvs_getreq()
844: *
845: * Get a request from the client.
846: */
847: int
848: cvs_getreq(void)
849: {
850: int nbcmd;
851:
852: nbcmd = 0;
853:
854: do {
855: /* wait for incoming data */
1.13 jfb 856: if (fgets(cvs_proto_buf, sizeof(cvs_proto_buf),
1.12 jfb 857: stdin) == NULL) {
858: if (feof(stdin))
859: return (0);
860: cvs_log(LP_ERRNO,
861: "failed to read request from client");
862: return (-1);
863: }
864:
1.13 jfb 865: if ((len = strlen(cvs_proto_buf)) != 0) {
866: if (cvs_proto_buf[len - 1] != '\n') {
1.12 jfb 867: /* truncated line */
1.30 deraadt 868: } else
1.13 jfb 869: cvs_proto_buf[--len] = '\0';
1.12 jfb 870: }
871:
1.13 jfb 872: ret = cvs_resp_handle(cvs_proto_buf);
1.12 jfb 873: } while (ret == 0);
874: }
875: #endif
876:
877:
878: /*
879: * cvs_sendln()
880: *
1.18 jfb 881: * Send a single line <line> string to the remote end. The line is sent as is,
1.12 jfb 882: * without any modifications.
883: * Returns 0 on success, or -1 on failure.
884: */
885: int
886: cvs_sendln(struct cvsroot *root, const char *line)
887: {
888: int nl;
889: size_t len;
1.18 jfb 890: FILE *out;
891:
892: if (cvs_cmdop == CVS_OP_SERVER)
893: out = stdout;
894: else
895: out = root->cr_srvin;
1.12 jfb 896:
897: nl = 0;
898: len = strlen(line);
899:
900: if ((len > 0) && (line[len - 1] != '\n'))
901: nl = 1;
902:
903: if (cvs_server_inlog != NULL) {
904: fputs(line, cvs_server_inlog);
905: if (nl)
1.55 jfb 906: putc('\n', cvs_server_inlog);
1.12 jfb 907: }
1.18 jfb 908: fputs(line, out);
1.12 jfb 909: if (nl)
1.55 jfb 910: putc('\n', out);
1.12 jfb 911: return (0);
912: }
913:
914:
915: /*
1.13 jfb 916: * cvs_sendraw()
1.12 jfb 917: *
918: * Send the first <len> bytes from the buffer <src> to the server.
919: */
920: int
1.13 jfb 921: cvs_sendraw(struct cvsroot *root, const void *src, size_t len)
1.12 jfb 922: {
1.18 jfb 923: FILE *out;
924:
925: if (cvs_cmdop == CVS_OP_SERVER)
926: out = stdout;
927: else
928: out = root->cr_srvin;
929:
1.12 jfb 930: if (cvs_server_inlog != NULL)
931: fwrite(src, sizeof(char), len, cvs_server_inlog);
1.18 jfb 932: if (fwrite(src, sizeof(char), len, out) < len) {
1.38 jfb 933: cvs_log(LP_ERR, "failed to send data");
1.12 jfb 934: return (-1);
935: }
936:
937: return (0);
938: }
939:
940:
941: /*
1.13 jfb 942: * cvs_recvraw()
1.12 jfb 943: *
944: * Receive the first <len> bytes from the buffer <src> to the server.
945: */
946: ssize_t
1.13 jfb 947: cvs_recvraw(struct cvsroot *root, void *dst, size_t len)
1.12 jfb 948: {
949: size_t ret;
1.18 jfb 950: FILE *in;
951:
952: if (cvs_cmdop == CVS_OP_SERVER)
953: in = stdin;
954: else
955: in = root->cr_srvout;
1.12 jfb 956:
1.18 jfb 957: ret = fread(dst, sizeof(char), len, in);
1.12 jfb 958: if (ret == 0)
959: return (-1);
960: if (cvs_server_outlog != NULL)
961: fwrite(dst, sizeof(char), len, cvs_server_outlog);
962: return (ssize_t)ret;
963: }
964:
965:
966: /*
1.13 jfb 967: * cvs_senddir()
1.12 jfb 968: *
1.32 jfb 969: * Send a `Directory' request along with the 2 paths that follow it. If
970: * the directory info to be sent is the same as the last info sent, the
971: * call does nothing and simply returns without an error.
1.12 jfb 972: */
973: int
1.31 tedu 974: cvs_senddir(struct cvsroot *root, CVSFILE *dir)
1.12 jfb 975: {
1.51 xsa 976: int l;
1.28 jfb 977: char lbuf[MAXPATHLEN], rbuf[MAXPATHLEN];
1.12 jfb 978:
1.47 jfb 979: if (dir->cf_type != DT_DIR)
980: return (-1);
981:
1.32 jfb 982: cvs_file_getpath(dir, lbuf, sizeof(lbuf));
1.45 joris 983: if (strcmp(lbuf, cvs_lastdir) == 0 && cvs_cmdop != CVS_OP_CHECKOUT)
1.32 jfb 984: return (0);
985:
1.47 jfb 986: if (dir->cf_repo == NULL)
1.28 jfb 987: strlcpy(rbuf, root->cr_dir, sizeof(rbuf));
1.51 xsa 988: else {
989: l = snprintf(rbuf, sizeof(rbuf), "%s/%s", root->cr_dir,
1.47 jfb 990: dir->cf_repo);
1.51 xsa 991: if (l == -1 || l >= (int)sizeof(rbuf)) {
992: errno = ENAMETOOLONG;
993: cvs_log(LP_ERRNO, "%s", rbuf);
994: return (-1);
995: }
996: }
1.12 jfb 997:
1.28 jfb 998:
999: if ((cvs_sendreq(root, CVS_REQ_DIRECTORY, lbuf) < 0) ||
1000: (cvs_sendln(root, rbuf) < 0))
1.12 jfb 1001: return (-1);
1.32 jfb 1002:
1003: strlcpy(cvs_lastdir, lbuf, sizeof(cvs_lastdir));
1.12 jfb 1004:
1005: return (0);
1006: }
1007:
1008:
1009: /*
1.13 jfb 1010: * cvs_sendarg()
1.12 jfb 1011: *
1012: * Send the argument <arg> to the server. The argument <append> is used to
1013: * determine if the argument should be simply appended to the last argument
1014: * sent or if it should be created as a new argument (0).
1015: */
1016: int
1.13 jfb 1017: cvs_sendarg(struct cvsroot *root, const char *arg, int append)
1.12 jfb 1018: {
1.13 jfb 1019: return cvs_sendreq(root, ((append == 0) ?
1020: CVS_REQ_ARGUMENT : CVS_REQ_ARGUMENTX), arg);
1.12 jfb 1021: }
1022:
1023:
1024: /*
1.13 jfb 1025: * cvs_sendentry()
1.12 jfb 1026: *
1027: * Send an `Entry' request to the server along with the mandatory fields from
1028: * the CVS entry <ent> (which are the name and revision).
1029: */
1030: int
1.47 jfb 1031: cvs_sendentry(struct cvsroot *root, const CVSFILE *file)
1.12 jfb 1032: {
1.51 xsa 1033: int l;
1.12 jfb 1034: char ebuf[128], numbuf[64];
1035:
1.47 jfb 1036: if (file->cf_type != DT_REG) {
1037: cvs_log(LP_ERR, "attempt to send Entry for non-regular file");
1038: return (-1);
1039: }
1.48 joris 1040:
1041: /* don't send Entry for unknown files */
1042: if (file->cf_cvstat == CVS_FST_UNKNOWN)
1043: return (0);
1.47 jfb 1044:
1.51 xsa 1045: l = snprintf(ebuf, sizeof(ebuf), "/%s/%s%s///", file->cf_name,
1.49 joris 1046: (file->cf_cvstat == CVS_FST_REMOVED) ? "-" : "",
1.47 jfb 1047: rcsnum_tostr(file->cf_lrev, numbuf, sizeof(numbuf)));
1.51 xsa 1048: if (l == -1 || l >= (int)sizeof(ebuf)) {
1049: errno = ENAMETOOLONG;
1050: cvs_log(LP_ERRNO, "%s", ebuf);
1051: return (-1);
1052: }
1.12 jfb 1053:
1.13 jfb 1054: return cvs_sendreq(root, CVS_REQ_ENTRY, ebuf);
1.12 jfb 1055: }
1056:
1057:
1058: /*
1.13 jfb 1059: * cvs_initlog()
1.12 jfb 1060: *
1061: * Initialize protocol logging if the CVS_CLIENT_LOG environment variable is
1062: * set. In this case, the variable's value is used as a path to which the
1063: * appropriate suffix is added (".in" for server input and ".out" for server
1064: * output.
1065: * Returns 0 on success, or -1 on failure.
1066: */
1067: static int
1.13 jfb 1068: cvs_initlog(void)
1.12 jfb 1069: {
1.52 joris 1070: int l;
1071: u_int i;
1072: char *env, *envdup, buf[MAXPATHLEN], fpath[MAXPATHLEN];
1073: char rpath[MAXPATHLEN], *s;
1074: struct stat st;
1075: time_t now;
1076: struct passwd *pwd;
1.12 jfb 1077:
1.13 jfb 1078: /* avoid doing it more than once */
1079: if (cvs_server_logon)
1080: return (0);
1081:
1.12 jfb 1082: env = getenv("CVS_CLIENT_LOG");
1083: if (env == NULL)
1084: return (0);
1085:
1.52 joris 1086: if ((envdup = strdup(env)) == NULL)
1087: return (-1);
1088:
1089: if ((s = strchr(envdup, '%')) != NULL)
1090: *s = '\0';
1091:
1092: strlcpy(buf, env, sizeof(buf));
1093: strlcpy(rpath, envdup, sizeof(rpath));
1094:
1095: s = buf;
1096: while ((s = strchr(s, '%')) != NULL) {
1097: *s++;
1098: switch (*s) {
1099: case 'c':
1100: strlcpy(fpath, cvs_command, sizeof(fpath));
1101: break;
1102: case 'd':
1103: time(&now);
1104: snprintf(fpath, sizeof(fpath), "%s", ctime(&now));
1105: break;
1106: case 'p':
1107: snprintf(fpath, sizeof(fpath), "%d", getpid());
1108: break;
1109: case 'u':
1110: if ((pwd = getpwuid(getuid())) != NULL)
1111: strlcpy(fpath, pwd->pw_name, sizeof(fpath));
1112: else
1113: fpath[0] = '\0';
1114: endpwent();
1115: break;
1116: default:
1117: fpath[0] = '\0';
1118: break;
1119: }
1120:
1121: if (fpath[0] != '\0') {
1122: strlcat(rpath, "-", sizeof(rpath));
1123: strlcat(rpath, fpath, sizeof(rpath));
1124: }
1125: }
1126:
1127: for (i = 0; i < UINT_MAX; i++) {
1128: l = snprintf(fpath, sizeof(fpath), "%s-%d.in", rpath, i);
1129: if (l == -1 || l >= (int)sizeof(fpath)) {
1130: errno = ENAMETOOLONG;
1131: cvs_log(LP_ERRNO, "%s", fpath);
1132: return (-1);
1133: }
1134:
1135: if (stat(fpath, &st) != -1)
1136: continue;
1137:
1138: if (errno != ENOENT)
1139: return (-1);
1140:
1141: break;
1142: }
1143:
1.12 jfb 1144: cvs_server_inlog = fopen(fpath, "w");
1145: if (cvs_server_inlog == NULL) {
1146: cvs_log(LP_ERRNO, "failed to open server input log `%s'",
1147: fpath);
1148: return (-1);
1149: }
1150:
1.52 joris 1151: for (i = 0; i < UINT_MAX; i++) {
1152: l = snprintf(fpath, sizeof(fpath), "%s-%d.out", rpath, i);
1153: if (l == -1 || l >= (int)sizeof(fpath)) {
1154: errno = ENAMETOOLONG;
1155: cvs_log(LP_ERRNO, "%s", fpath);
1156: return (-1);
1157: }
1158:
1159: if (stat(fpath, &st) != -1)
1160: continue;
1161:
1162: if (errno != ENOENT)
1163: return (-1);
1164:
1165: break;
1166: }
1167:
1.12 jfb 1168: cvs_server_outlog = fopen(fpath, "w");
1169: if (cvs_server_outlog == NULL) {
1170: cvs_log(LP_ERRNO, "failed to open server output log `%s'",
1171: fpath);
1172: return (-1);
1173: }
1174:
1175: /* make the streams line-buffered */
1176: setvbuf(cvs_server_inlog, NULL, _IOLBF, 0);
1177: setvbuf(cvs_server_outlog, NULL, _IOLBF, 0);
1178:
1.13 jfb 1179: cvs_server_logon = 1;
1.12 jfb 1180:
1181: return (0);
1182: }
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