Annotation of src/usr.bin/cvs/proto.c, Revision 1.62
1.62 ! xsa 1: /* $OpenBSD: proto.c,v 1.61 2005/07/19 00:51:01 joris 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:
1.62 ! xsa 309: /* send the CVSROOT to the server */
! 310: if (cvs_sendreq(root, CVS_REQ_ROOT, root->cr_dir) < 0)
1.54 joris 311: return (-1);
312:
1.40 jfb 313: /* don't fail if this request doesn't work */
1.17 jfb 314: if (cvs_sendreq(root, CVS_REQ_VERSION, NULL) < 0)
1.40 jfb 315: cvs_log(LP_WARN, "failed to get remote version");
1.17 jfb 316:
1.13 jfb 317: /* now share our global options with the server */
1.61 joris 318: if ((verbosity <= 1) &&
1.40 jfb 319: (cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-q") < 0))
320: return (-1);
1.61 joris 321: if ((verbosity == 0) &&
1.40 jfb 322: (cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-Q") < 0))
323: return (-1);
324:
1.53 jfb 325: if (cvs_noexec && (cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-n") < 0))
326: return (-1);
1.40 jfb 327: if (cvs_nolog && (cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-l") < 0))
328: return (-1);
329: if (cvs_readonly && (cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-r") < 0))
330: return (-1);
331: if (cvs_trace && (cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-t") < 0))
1.13 jfb 332: return (-1);
333:
334: /* not sure why, but we have to send this */
335: if (cvs_sendreq(root, CVS_REQ_USEUNCHANGED, NULL) < 0)
336: return (-1);
337:
338: cvs_log(LP_DEBUG, "connected to %s", root->cr_host);
339:
1.33 jfb 340: root->cr_flags |= CVS_ROOT_CONNECTED;
341:
1.13 jfb 342: return (0);
343: }
344:
345:
346: /*
347: * cvs_disconnect()
348: *
349: * Disconnect from the cvs server.
350: */
351: void
352: cvs_disconnect(struct cvsroot *root)
353: {
1.33 jfb 354: if (!(root->cr_flags & CVS_ROOT_CONNECTED))
355: return;
356:
1.13 jfb 357: cvs_log(LP_DEBUG, "closing connection to %s", root->cr_host);
358: if (root->cr_srvin != NULL) {
359: (void)fclose(root->cr_srvin);
360: root->cr_srvin = NULL;
361: }
362: if (root->cr_srvout != NULL) {
363: (void)fclose(root->cr_srvout);
364: root->cr_srvout = NULL;
365: }
1.33 jfb 366:
367: root->cr_flags &= ~CVS_ROOT_CONNECTED;
1.13 jfb 368: }
369:
1.1 jfb 370:
371: /*
372: * cvs_req_getbyid()
373: *
374: */
1.13 jfb 375: struct cvs_req*
1.1 jfb 376: cvs_req_getbyid(int reqid)
377: {
378: u_int i;
379:
380: for (i = 0; i < CVS_NBREQ; i++)
381: if (cvs_requests[i].req_id == reqid)
1.13 jfb 382: return &(cvs_requests[i]);
1.31 tedu 383:
1.1 jfb 384: return (NULL);
385: }
386:
387:
388: /*
389: * cvs_req_getbyname()
390: */
1.13 jfb 391: struct cvs_req*
1.1 jfb 392: cvs_req_getbyname(const char *rname)
393: {
394: u_int i;
395:
396: for (i = 0; i < CVS_NBREQ; i++)
397: if (strcmp(cvs_requests[i].req_str, rname) == 0)
1.13 jfb 398: return &(cvs_requests[i]);
1.1 jfb 399:
1.13 jfb 400: return (NULL);
1.1 jfb 401: }
402:
403:
404: /*
405: * cvs_req_getvalid()
406: *
407: * Build a space-separated list of all the requests that this protocol
408: * implementation supports.
409: */
410: char*
411: cvs_req_getvalid(void)
412: {
413: u_int i;
414: size_t len;
415: char *vrstr;
416: BUF *buf;
417:
418: buf = cvs_buf_alloc(512, BUF_AUTOEXT);
419: if (buf == NULL)
420: return (NULL);
421:
422: cvs_buf_set(buf, cvs_requests[0].req_str,
423: strlen(cvs_requests[0].req_str), 0);
424:
425: for (i = 1; i < CVS_NBREQ; i++) {
426: if ((cvs_buf_putc(buf, ' ') < 0) ||
427: (cvs_buf_append(buf, cvs_requests[i].req_str,
428: strlen(cvs_requests[i].req_str)) < 0)) {
429: cvs_buf_free(buf);
430: return (NULL);
431: }
432: }
433:
434: /* NUL-terminate */
435: if (cvs_buf_putc(buf, '\0') < 0) {
436: cvs_buf_free(buf);
437: return (NULL);
438: }
439:
440: len = cvs_buf_size(buf);
441: vrstr = (char *)malloc(len);
1.27 jfb 442: if (vrstr == NULL) {
443: cvs_buf_free(buf);
444: return (NULL);
445: }
1.1 jfb 446:
447: cvs_buf_copy(buf, 0, vrstr, len);
448: cvs_buf_free(buf);
449:
450: return (vrstr);
451: }
452:
453:
454: /*
455: * cvs_resp_getbyid()
456: *
457: */
1.13 jfb 458: struct cvs_resp*
1.1 jfb 459: cvs_resp_getbyid(int respid)
460: {
461: u_int i;
462:
1.44 tedu 463: for (i = 0; i < CVS_NBRESP; i++)
1.13 jfb 464: if (cvs_responses[i].resp_id == (u_int)respid)
465: return &(cvs_responses[i]);
1.31 tedu 466:
1.1 jfb 467: return (NULL);
468: }
469:
470:
471: /*
472: * cvs_resp_getbyname()
473: */
1.13 jfb 474: struct cvs_resp*
1.1 jfb 475: cvs_resp_getbyname(const char *rname)
476: {
477: u_int i;
478:
1.44 tedu 479: for (i = 0; i < CVS_NBRESP; i++)
1.1 jfb 480: if (strcmp(cvs_responses[i].resp_str, rname) == 0)
1.13 jfb 481: return &(cvs_responses[i]);
1.1 jfb 482:
1.13 jfb 483: return (NULL);
1.1 jfb 484: }
485:
486:
487: /*
488: * cvs_resp_getvalid()
489: *
490: * Build a space-separated list of all the responses that this protocol
491: * implementation supports.
492: */
493: char*
494: cvs_resp_getvalid(void)
495: {
496: u_int i;
497: size_t len;
498: char *vrstr;
499: BUF *buf;
500:
501: buf = cvs_buf_alloc(512, BUF_AUTOEXT);
502: if (buf == NULL)
503: return (NULL);
504:
505: cvs_buf_set(buf, cvs_responses[0].resp_str,
506: strlen(cvs_responses[0].resp_str), 0);
507:
508: for (i = 1; i < CVS_NBRESP; i++) {
509: if ((cvs_buf_putc(buf, ' ') < 0) ||
510: (cvs_buf_append(buf, cvs_responses[i].resp_str,
511: strlen(cvs_responses[i].resp_str)) < 0)) {
512: cvs_buf_free(buf);
513: return (NULL);
514: }
515: }
516:
517: /* NUL-terminate */
518: if (cvs_buf_putc(buf, '\0') < 0) {
519: cvs_buf_free(buf);
520: return (NULL);
521: }
522:
523: len = cvs_buf_size(buf);
524: vrstr = (char *)malloc(len);
1.27 jfb 525: if (vrstr == NULL) {
526: cvs_buf_free(buf);
527: return (NULL);
528: }
1.1 jfb 529:
530: cvs_buf_copy(buf, 0, vrstr, len);
531: cvs_buf_free(buf);
532:
533: return (vrstr);
534: }
535:
536:
537: /*
538: * cvs_sendfile()
539: *
540: * Send the mode and size of a file followed by the file's contents.
541: * Returns 0 on success, or -1 on failure.
542: */
543: int
1.13 jfb 544: cvs_sendfile(struct cvsroot *root, const char *path)
1.1 jfb 545: {
1.51 xsa 546: int fd, l;
1.1 jfb 547: ssize_t ret;
548: char buf[4096];
549: struct stat st;
550:
1.38 jfb 551: cvs_log(LP_TRACE, "Sending file `%s' to server", basename(path));
552:
1.1 jfb 553: if (stat(path, &st) == -1) {
554: cvs_log(LP_ERRNO, "failed to stat `%s'", path);
555: return (-1);
556: }
557:
1.24 jfb 558: if (cvs_modetostr(st.st_mode, buf, sizeof(buf)) < 0)
559: return (-1);
560:
1.1 jfb 561: fd = open(path, O_RDONLY, 0);
562: if (fd == -1) {
1.38 jfb 563: cvs_log(LP_ERRNO, "failed to open `%s'", path);
1.1 jfb 564: return (-1);
565: }
566:
1.38 jfb 567: if (cvs_sendln(root, buf) < 0) {
568: (void)close(fd);
569: return (-1);
570: }
1.51 xsa 571: l = snprintf(buf, sizeof(buf), "%lld\n", st.st_size);
572: if (l == -1 || l >= (int)sizeof(buf))
573: return (-1);
574:
1.38 jfb 575: if (cvs_sendln(root, buf) < 0) {
576: (void)close(fd);
577: return (-1);
578: }
1.1 jfb 579:
580: while ((ret = read(fd, buf, sizeof(buf))) != 0) {
581: if (ret == -1) {
1.24 jfb 582: (void)close(fd);
1.1 jfb 583: cvs_log(LP_ERRNO, "failed to read file `%s'", path);
584: return (-1);
585: }
586:
1.38 jfb 587: if (cvs_sendraw(root, buf, (size_t)ret) < 0) {
588: (void)close(fd);
589: return (-1);
590: }
1.1 jfb 591: }
592:
593: (void)close(fd);
594: return (0);
595: }
596:
597:
598: /*
599: * cvs_recvfile()
600: *
601: * Receive the mode and size of a file followed the file's contents and
602: * create or update the file whose path is <path> with the received
603: * information.
604: */
1.14 jfb 605: BUF*
606: cvs_recvfile(struct cvsroot *root, mode_t *mode)
1.1 jfb 607: {
608: size_t len;
609: ssize_t ret;
610: off_t fsz, cnt;
611: char buf[4096], *ep;
1.14 jfb 612: BUF *fbuf;
613:
614: fbuf = cvs_buf_alloc(sizeof(buf), BUF_AUTOEXT);
615: if (fbuf == NULL)
616: return (NULL);
1.1 jfb 617:
1.13 jfb 618: if ((cvs_getln(root, buf, sizeof(buf)) < 0) ||
1.14 jfb 619: (cvs_strtomode(buf, mode) < 0)) {
1.44 tedu 620: cvs_buf_free(fbuf);
1.14 jfb 621: return (NULL);
1.1 jfb 622: }
623:
1.50 joris 624: if (cvs_getln(root, buf, sizeof(buf)) < 0) {
625: cvs_buf_free(fbuf);
626: return (NULL);
627: }
1.1 jfb 628:
629: fsz = (off_t)strtol(buf, &ep, 10);
630: if (*ep != '\0') {
631: cvs_log(LP_ERR, "parse error in file size transmission");
1.44 tedu 632: cvs_buf_free(fbuf);
1.14 jfb 633: return (NULL);
1.1 jfb 634: }
635:
636: cnt = 0;
637: do {
638: len = MIN(sizeof(buf), (size_t)(fsz - cnt));
1.6 jfb 639: if (len == 0)
640: break;
1.13 jfb 641: ret = cvs_recvraw(root, buf, len);
1.1 jfb 642: if (ret == -1) {
1.14 jfb 643: cvs_buf_free(fbuf);
644: return (NULL);
1.1 jfb 645: }
646:
1.14 jfb 647: if (cvs_buf_append(fbuf, buf, (size_t)ret) == -1) {
648: cvs_log(LP_ERR,
649: "failed to append received file data");
650: cvs_buf_free(fbuf);
651: return (NULL);
1.1 jfb 652: }
653:
654: cnt += (off_t)ret;
655: } while (cnt < fsz);
656:
1.14 jfb 657: return (fbuf);
1.1 jfb 658: }
1.12 jfb 659:
660: /*
661: * cvs_sendreq()
662: *
663: * Send a request to the server of type <rid>, with optional arguments
664: * contained in <arg>, which should not be terminated by a newline.
665: * Returns 0 on success, or -1 on failure.
666: */
667: int
1.13 jfb 668: cvs_sendreq(struct cvsroot *root, u_int rid, const char *arg)
1.12 jfb 669: {
1.51 xsa 670: int ret, l;
1.13 jfb 671: struct cvs_req *req;
1.12 jfb 672:
673: if (root->cr_srvin == NULL) {
1.36 jfb 674: cvs_log(LP_ERR, "cannot send request %u: Not connected", rid);
1.12 jfb 675: return (-1);
676: }
677:
1.13 jfb 678: req = cvs_req_getbyid(rid);
679: if (req == NULL) {
1.12 jfb 680: cvs_log(LP_ERR, "unsupported request type %u", rid);
681: return (-1);
682: }
683:
1.18 jfb 684: /* is this request supported by the server? */
685: if (!CVS_GETVR(root, req->req_id)) {
1.57 joris 686: if (rid == CVS_REQ_VERSION) {
687: ret = cvs_sendreq(root, CVS_REQ_NOOP, arg);
688: } else {
689: cvs_log(LP_WARN,
690: "remote end does not support request `%s'",
691: req->req_str);
692: ret = -1;
693: }
694: return (ret);
1.18 jfb 695: }
696:
1.51 xsa 697: l = snprintf(cvs_proto_buf, sizeof(cvs_proto_buf), "%s%s%s\n",
1.13 jfb 698: req->req_str, (arg == NULL) ? "" : " ", (arg == NULL) ? "" : arg);
1.51 xsa 699: if (l == -1 || l >= (int)sizeof(cvs_proto_buf))
700: return (-1);
1.12 jfb 701:
702: if (cvs_server_inlog != NULL)
1.13 jfb 703: fputs(cvs_proto_buf, cvs_server_inlog);
1.12 jfb 704:
1.13 jfb 705: ret = fputs(cvs_proto_buf, root->cr_srvin);
1.12 jfb 706: if (ret == EOF) {
707: cvs_log(LP_ERRNO, "failed to send request to server");
708: return (-1);
709: }
1.17 jfb 710:
711: if (rid == CVS_REQ_VERSION)
712: cvs_version_sent = 1;
1.12 jfb 713:
1.13 jfb 714: if (req->req_flags & CVS_REQF_RESP)
1.12 jfb 715: ret = cvs_getresp(root);
716:
1.13 jfb 717: return (ret);
1.12 jfb 718: }
719:
720:
721: /*
722: * cvs_getresp()
723: *
724: * Get a response from the server. This call will actually read and handle
725: * responses from the server until one of the response handlers returns
1.37 david 726: * non-zero (either an error occurred or the end of the response was reached).
1.12 jfb 727: * Returns the number of handled commands on success, or -1 on failure.
728: */
729: int
1.13 jfb 730: cvs_getresp(struct cvsroot *root)
1.12 jfb 731: {
1.13 jfb 732: int nbcmd, ret;
733: size_t len;
1.12 jfb 734:
735: nbcmd = 0;
736:
737: do {
738: /* wait for incoming data */
1.13 jfb 739: if (fgets(cvs_proto_buf, sizeof(cvs_proto_buf),
1.12 jfb 740: root->cr_srvout) == NULL) {
741: if (feof(root->cr_srvout))
742: return (0);
743: cvs_log(LP_ERRNO,
744: "failed to read response from server");
745: return (-1);
746: }
747:
748: if (cvs_server_outlog != NULL)
1.13 jfb 749: fputs(cvs_proto_buf, cvs_server_outlog);
1.12 jfb 750:
1.13 jfb 751: if ((len = strlen(cvs_proto_buf)) != 0) {
1.42 joris 752: /* if len - 1 != '\n' the line is truncated */
1.43 joris 753: if (cvs_proto_buf[len - 1] == '\n')
1.13 jfb 754: cvs_proto_buf[--len] = '\0';
1.12 jfb 755: }
756:
1.13 jfb 757: ret = cvs_resp_handle(root, cvs_proto_buf);
1.12 jfb 758: nbcmd++;
759: } while (ret == 0);
760:
761: if (ret > 0)
762: ret = nbcmd;
763: return (ret);
764: }
765:
766:
767: /*
1.13 jfb 768: * cvs_getln()
769: *
1.18 jfb 770: * Get a line from the remote end and store it in <lbuf>. The terminating
1.13 jfb 771: * newline character is stripped from the result.
1.55 jfb 772: * Returns the length in bytes of the line (not including the NUL byte), or
773: * -1 on failure.
1.13 jfb 774: */
775: int
776: cvs_getln(struct cvsroot *root, char *lbuf, size_t len)
777: {
778: size_t rlen;
1.18 jfb 779: FILE *in;
1.13 jfb 780:
1.18 jfb 781: if (cvs_cmdop == CVS_OP_SERVER)
782: in = stdin;
783: else
784: in = root->cr_srvout;
785:
786: if (fgets(lbuf, len, in) == NULL) {
787: if (ferror(in)) {
788: cvs_log(LP_ERRNO, "failed to read line");
1.13 jfb 789: return (-1);
790: }
791:
1.18 jfb 792: if (feof(in))
1.13 jfb 793: *lbuf = '\0';
794: }
795:
796: if (cvs_server_outlog != NULL)
797: fputs(lbuf, cvs_server_outlog);
798:
799: rlen = strlen(lbuf);
800: if ((rlen > 0) && (lbuf[rlen - 1] == '\n'))
801: lbuf[--rlen] = '\0';
802:
1.55 jfb 803: return (rlen);
1.13 jfb 804: }
805:
1.19 jfb 806:
1.13 jfb 807: /*
1.12 jfb 808: * cvs_sendresp()
809: *
1.19 jfb 810: * Send a response of type <rid> to the client, with optional arguments
1.12 jfb 811: * contained in <arg>, which should not be terminated by a newline.
812: * Returns 0 on success, or -1 on failure.
813: */
814: int
815: cvs_sendresp(u_int rid, const char *arg)
816: {
817: int ret;
1.19 jfb 818: struct cvs_resp *resp;
1.12 jfb 819:
820: resp = cvs_resp_getbyid(rid);
1.13 jfb 821: if (resp == NULL) {
1.12 jfb 822: cvs_log(LP_ERR, "unsupported response type %u", rid);
823: return (-1);
824: }
825:
1.19 jfb 826: ret = fputs(resp->resp_str, stdout);
1.12 jfb 827: if (ret == EOF) {
828: cvs_log(LP_ERRNO, "failed to send response to client");
1.30 deraadt 829: } else {
1.19 jfb 830: if (arg != NULL) {
831: putc(' ', stdout);
832: fputs(arg, stdout);
833: }
1.12 jfb 834: putc('\n', stdout);
835: }
836: return (0);
837: }
838:
839:
1.19 jfb 840: #ifdef notyet
1.12 jfb 841: /*
842: * cvs_getreq()
843: *
844: * Get a request from the client.
845: */
846: int
847: cvs_getreq(void)
848: {
849: int nbcmd;
850:
851: nbcmd = 0;
852:
853: do {
854: /* wait for incoming data */
1.13 jfb 855: if (fgets(cvs_proto_buf, sizeof(cvs_proto_buf),
1.12 jfb 856: stdin) == NULL) {
857: if (feof(stdin))
858: return (0);
859: cvs_log(LP_ERRNO,
860: "failed to read request from client");
861: return (-1);
862: }
863:
1.13 jfb 864: if ((len = strlen(cvs_proto_buf)) != 0) {
865: if (cvs_proto_buf[len - 1] != '\n') {
1.12 jfb 866: /* truncated line */
1.30 deraadt 867: } else
1.13 jfb 868: cvs_proto_buf[--len] = '\0';
1.12 jfb 869: }
870:
1.13 jfb 871: ret = cvs_resp_handle(cvs_proto_buf);
1.12 jfb 872: } while (ret == 0);
873: }
874: #endif
875:
876:
877: /*
878: * cvs_sendln()
879: *
1.18 jfb 880: * Send a single line <line> string to the remote end. The line is sent as is,
1.12 jfb 881: * without any modifications.
882: * Returns 0 on success, or -1 on failure.
883: */
884: int
885: cvs_sendln(struct cvsroot *root, const char *line)
886: {
887: int nl;
888: size_t len;
1.18 jfb 889: FILE *out;
890:
891: if (cvs_cmdop == CVS_OP_SERVER)
892: out = stdout;
893: else
894: out = root->cr_srvin;
1.12 jfb 895:
896: nl = 0;
897: len = strlen(line);
898:
899: if ((len > 0) && (line[len - 1] != '\n'))
900: nl = 1;
901:
902: if (cvs_server_inlog != NULL) {
903: fputs(line, cvs_server_inlog);
904: if (nl)
1.55 jfb 905: putc('\n', cvs_server_inlog);
1.12 jfb 906: }
1.18 jfb 907: fputs(line, out);
1.12 jfb 908: if (nl)
1.55 jfb 909: putc('\n', out);
1.12 jfb 910: return (0);
911: }
912:
913:
914: /*
1.13 jfb 915: * cvs_sendraw()
1.12 jfb 916: *
917: * Send the first <len> bytes from the buffer <src> to the server.
918: */
919: int
1.13 jfb 920: cvs_sendraw(struct cvsroot *root, const void *src, size_t len)
1.12 jfb 921: {
1.18 jfb 922: FILE *out;
923:
924: if (cvs_cmdop == CVS_OP_SERVER)
925: out = stdout;
926: else
927: out = root->cr_srvin;
928:
1.12 jfb 929: if (cvs_server_inlog != NULL)
930: fwrite(src, sizeof(char), len, cvs_server_inlog);
1.18 jfb 931: if (fwrite(src, sizeof(char), len, out) < len) {
1.38 jfb 932: cvs_log(LP_ERR, "failed to send data");
1.12 jfb 933: return (-1);
934: }
935:
936: return (0);
937: }
938:
939:
940: /*
1.13 jfb 941: * cvs_recvraw()
1.12 jfb 942: *
943: * Receive the first <len> bytes from the buffer <src> to the server.
944: */
945: ssize_t
1.13 jfb 946: cvs_recvraw(struct cvsroot *root, void *dst, size_t len)
1.12 jfb 947: {
948: size_t ret;
1.18 jfb 949: FILE *in;
950:
951: if (cvs_cmdop == CVS_OP_SERVER)
952: in = stdin;
953: else
954: in = root->cr_srvout;
1.12 jfb 955:
1.18 jfb 956: ret = fread(dst, sizeof(char), len, in);
1.12 jfb 957: if (ret == 0)
958: return (-1);
959: if (cvs_server_outlog != NULL)
960: fwrite(dst, sizeof(char), len, cvs_server_outlog);
961: return (ssize_t)ret;
962: }
963:
964:
965: /*
1.13 jfb 966: * cvs_senddir()
1.12 jfb 967: *
1.32 jfb 968: * Send a `Directory' request along with the 2 paths that follow it. If
969: * the directory info to be sent is the same as the last info sent, the
970: * call does nothing and simply returns without an error.
1.12 jfb 971: */
972: int
1.31 tedu 973: cvs_senddir(struct cvsroot *root, CVSFILE *dir)
1.12 jfb 974: {
1.60 xsa 975: size_t len;
1.28 jfb 976: char lbuf[MAXPATHLEN], rbuf[MAXPATHLEN];
1.12 jfb 977:
1.47 jfb 978: if (dir->cf_type != DT_DIR)
979: return (-1);
980:
1.32 jfb 981: cvs_file_getpath(dir, lbuf, sizeof(lbuf));
1.45 joris 982: if (strcmp(lbuf, cvs_lastdir) == 0 && cvs_cmdop != CVS_OP_CHECKOUT)
1.32 jfb 983: return (0);
984:
1.47 jfb 985: if (dir->cf_repo == NULL)
1.28 jfb 986: strlcpy(rbuf, root->cr_dir, sizeof(rbuf));
1.51 xsa 987: else {
1.60 xsa 988: len = cvs_path_cat(root->cr_dir, dir->cf_repo, rbuf,
989: sizeof(rbuf));
990: if (len >= sizeof(rbuf))
1.51 xsa 991: return (-1);
992: }
1.12 jfb 993:
1.28 jfb 994:
995: if ((cvs_sendreq(root, CVS_REQ_DIRECTORY, lbuf) < 0) ||
996: (cvs_sendln(root, rbuf) < 0))
1.12 jfb 997: return (-1);
1.32 jfb 998:
999: strlcpy(cvs_lastdir, lbuf, sizeof(cvs_lastdir));
1.12 jfb 1000:
1001: return (0);
1002: }
1003:
1004:
1005: /*
1.13 jfb 1006: * cvs_sendarg()
1.12 jfb 1007: *
1008: * Send the argument <arg> to the server. The argument <append> is used to
1009: * determine if the argument should be simply appended to the last argument
1010: * sent or if it should be created as a new argument (0).
1011: */
1012: int
1.13 jfb 1013: cvs_sendarg(struct cvsroot *root, const char *arg, int append)
1.12 jfb 1014: {
1.13 jfb 1015: return cvs_sendreq(root, ((append == 0) ?
1016: CVS_REQ_ARGUMENT : CVS_REQ_ARGUMENTX), arg);
1.12 jfb 1017: }
1018:
1019:
1020: /*
1.13 jfb 1021: * cvs_sendentry()
1.12 jfb 1022: *
1023: * Send an `Entry' request to the server along with the mandatory fields from
1024: * the CVS entry <ent> (which are the name and revision).
1025: */
1026: int
1.47 jfb 1027: cvs_sendentry(struct cvsroot *root, const CVSFILE *file)
1.12 jfb 1028: {
1.51 xsa 1029: int l;
1.12 jfb 1030: char ebuf[128], numbuf[64];
1031:
1.47 jfb 1032: if (file->cf_type != DT_REG) {
1033: cvs_log(LP_ERR, "attempt to send Entry for non-regular file");
1034: return (-1);
1035: }
1.48 joris 1036:
1037: /* don't send Entry for unknown files */
1038: if (file->cf_cvstat == CVS_FST_UNKNOWN)
1039: return (0);
1.47 jfb 1040:
1.51 xsa 1041: l = snprintf(ebuf, sizeof(ebuf), "/%s/%s%s///", file->cf_name,
1.49 joris 1042: (file->cf_cvstat == CVS_FST_REMOVED) ? "-" : "",
1.47 jfb 1043: rcsnum_tostr(file->cf_lrev, numbuf, sizeof(numbuf)));
1.51 xsa 1044: if (l == -1 || l >= (int)sizeof(ebuf)) {
1045: errno = ENAMETOOLONG;
1046: cvs_log(LP_ERRNO, "%s", ebuf);
1047: return (-1);
1048: }
1.12 jfb 1049:
1.13 jfb 1050: return cvs_sendreq(root, CVS_REQ_ENTRY, ebuf);
1.12 jfb 1051: }
1052:
1053:
1054: /*
1.13 jfb 1055: * cvs_initlog()
1.12 jfb 1056: *
1057: * Initialize protocol logging if the CVS_CLIENT_LOG environment variable is
1058: * set. In this case, the variable's value is used as a path to which the
1059: * appropriate suffix is added (".in" for server input and ".out" for server
1060: * output.
1061: * Returns 0 on success, or -1 on failure.
1062: */
1063: static int
1.13 jfb 1064: cvs_initlog(void)
1.12 jfb 1065: {
1.52 joris 1066: int l;
1067: u_int i;
1068: char *env, *envdup, buf[MAXPATHLEN], fpath[MAXPATHLEN];
1069: char rpath[MAXPATHLEN], *s;
1070: struct stat st;
1071: time_t now;
1072: struct passwd *pwd;
1.12 jfb 1073:
1.13 jfb 1074: /* avoid doing it more than once */
1075: if (cvs_server_logon)
1076: return (0);
1077:
1.12 jfb 1078: env = getenv("CVS_CLIENT_LOG");
1079: if (env == NULL)
1080: return (0);
1081:
1.52 joris 1082: if ((envdup = strdup(env)) == NULL)
1083: return (-1);
1084:
1085: if ((s = strchr(envdup, '%')) != NULL)
1086: *s = '\0';
1087:
1088: strlcpy(buf, env, sizeof(buf));
1089: strlcpy(rpath, envdup, sizeof(rpath));
1090:
1091: s = buf;
1092: while ((s = strchr(s, '%')) != NULL) {
1093: *s++;
1094: switch (*s) {
1095: case 'c':
1096: strlcpy(fpath, cvs_command, sizeof(fpath));
1097: break;
1098: case 'd':
1099: time(&now);
1.59 niallo 1100: strlcpy(fpath, ctime(&now), sizeof(fpath));
1.52 joris 1101: break;
1102: case 'p':
1103: snprintf(fpath, sizeof(fpath), "%d", getpid());
1104: break;
1105: case 'u':
1106: if ((pwd = getpwuid(getuid())) != NULL)
1107: strlcpy(fpath, pwd->pw_name, sizeof(fpath));
1108: else
1109: fpath[0] = '\0';
1110: endpwent();
1111: break;
1112: default:
1113: fpath[0] = '\0';
1114: break;
1.58 joris 1115: }
1.52 joris 1116:
1117: if (fpath[0] != '\0') {
1118: strlcat(rpath, "-", sizeof(rpath));
1119: strlcat(rpath, fpath, sizeof(rpath));
1120: }
1121: }
1122:
1123: for (i = 0; i < UINT_MAX; i++) {
1124: l = snprintf(fpath, sizeof(fpath), "%s-%d.in", rpath, i);
1125: if (l == -1 || l >= (int)sizeof(fpath)) {
1126: errno = ENAMETOOLONG;
1127: cvs_log(LP_ERRNO, "%s", fpath);
1128: return (-1);
1129: }
1130:
1131: if (stat(fpath, &st) != -1)
1132: continue;
1133:
1134: if (errno != ENOENT)
1135: return (-1);
1136:
1137: break;
1138: }
1139:
1.12 jfb 1140: cvs_server_inlog = fopen(fpath, "w");
1141: if (cvs_server_inlog == NULL) {
1142: cvs_log(LP_ERRNO, "failed to open server input log `%s'",
1143: fpath);
1144: return (-1);
1145: }
1146:
1.52 joris 1147: for (i = 0; i < UINT_MAX; i++) {
1148: l = snprintf(fpath, sizeof(fpath), "%s-%d.out", rpath, i);
1149: if (l == -1 || l >= (int)sizeof(fpath)) {
1150: errno = ENAMETOOLONG;
1151: cvs_log(LP_ERRNO, "%s", fpath);
1152: return (-1);
1153: }
1154:
1155: if (stat(fpath, &st) != -1)
1156: continue;
1157:
1158: if (errno != ENOENT)
1159: return (-1);
1160:
1161: break;
1162: }
1163:
1.12 jfb 1164: cvs_server_outlog = fopen(fpath, "w");
1165: if (cvs_server_outlog == NULL) {
1166: cvs_log(LP_ERRNO, "failed to open server output log `%s'",
1167: fpath);
1168: return (-1);
1169: }
1170:
1171: /* make the streams line-buffered */
1172: setvbuf(cvs_server_inlog, NULL, _IOLBF, 0);
1173: setvbuf(cvs_server_outlog, NULL, _IOLBF, 0);
1174:
1.13 jfb 1175: cvs_server_logon = 1;
1.12 jfb 1176:
1177: return (0);
1178: }