Annotation of src/usr.bin/cvs/proto.c, Revision 1.32
1.32 ! jfb 1: /* $OpenBSD: proto.c,v 1.31 2004/12/07 17:10:56 tedu 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:
46: #include <fcntl.h>
47: #include <stdio.h>
48: #include <errno.h>
49: #include <stdlib.h>
50: #include <unistd.h>
51: #include <signal.h>
52: #include <string.h>
53: #include <sysexits.h>
54: #ifdef CVS_ZLIB
55: #include <zlib.h>
56: #endif
57:
58: #include "buf.h"
59: #include "cvs.h"
60: #include "log.h"
1.14 jfb 61: #include "file.h"
1.13 jfb 62: #include "proto.h"
1.1 jfb 63:
64:
1.11 jfb 65: /* request flags */
66: #define CVS_REQF_RESP 0x01
67:
68:
1.1 jfb 69: extern int verbosity;
70: extern int cvs_compress;
71: extern char *cvs_rsh;
72: extern int cvs_trace;
73: extern int cvs_nolog;
74: extern int cvs_readonly;
1.18 jfb 75: extern int cvs_cmdop;
1.1 jfb 76:
1.13 jfb 77: static int cvs_initlog (void);
1.1 jfb 78:
1.18 jfb 79: struct cvs_req cvs_requests[] = {
80: { CVS_REQ_DIRECTORY, "Directory", 0 },
81: { CVS_REQ_MAXDOTDOT, "Max-dotdot", 0 },
82: { CVS_REQ_STATICDIR, "Static-directory", 0 },
83: { CVS_REQ_STICKY, "Sticky", 0 },
84: { CVS_REQ_ENTRY, "Entry", 0 },
85: { CVS_REQ_ENTRYEXTRA, "EntryExtra", 0 },
86: { CVS_REQ_CHECKINTIME, "Checkin-time", 0 },
87: { CVS_REQ_MODIFIED, "Modified", 0 },
88: { CVS_REQ_ISMODIFIED, "Is-modified", 0 },
89: { CVS_REQ_UNCHANGED, "Unchanged", 0 },
90: { CVS_REQ_USEUNCHANGED, "UseUnchanged", 0 },
91: { CVS_REQ_NOTIFY, "Notify", 0 },
92: { CVS_REQ_NOTIFYUSER, "NotifyUser", 0 },
93: { CVS_REQ_QUESTIONABLE, "Questionable", 0 },
94: { CVS_REQ_CASE, "Case", 0 },
95: { CVS_REQ_UTF8, "Utf8", 0 },
96: { CVS_REQ_ARGUMENT, "Argument", 0 },
97: { CVS_REQ_ARGUMENTX, "Argumentx", 0 },
98: { CVS_REQ_GLOBALOPT, "Global_option", 0 },
99: { CVS_REQ_GZIPSTREAM, "Gzip-stream", 0 },
100: { CVS_REQ_READCVSRC2, "read-cvsrc2", 0 },
101: { CVS_REQ_READWRAP, "read-cvswrappers", 0 },
102: { CVS_REQ_READIGNORE, "read-cvsignore", 0 },
103: { CVS_REQ_ERRIFREADER, "Error-If-Reader", 0 },
104: { CVS_REQ_VALIDRCSOPT, "Valid-RcsOptions", 0 },
105: { CVS_REQ_SET, "Set", 0 },
106: { CVS_REQ_XPANDMOD, "expand-modules", CVS_REQF_RESP },
1.26 jfb 107: { CVS_REQ_LOG, "log", CVS_REQF_RESP },
1.18 jfb 108: { CVS_REQ_CO, "co", CVS_REQF_RESP },
109: { CVS_REQ_EXPORT, "export", CVS_REQF_RESP },
1.26 jfb 110: { CVS_REQ_ANNOTATE, "annotate", CVS_REQF_RESP },
111: { CVS_REQ_RDIFF, "rdiff", CVS_REQF_RESP },
1.18 jfb 112: { CVS_REQ_RTAG, "rtag", CVS_REQF_RESP },
113: { CVS_REQ_INIT, "init", CVS_REQF_RESP },
114: { CVS_REQ_STATUS, "status", CVS_REQF_RESP },
115: { CVS_REQ_UPDATE, "update", CVS_REQF_RESP },
1.26 jfb 116: { CVS_REQ_HISTORY, "history", CVS_REQF_RESP },
1.18 jfb 117: { CVS_REQ_IMPORT, "import", CVS_REQF_RESP },
118: { CVS_REQ_ADD, "add", CVS_REQF_RESP },
119: { CVS_REQ_REMOVE, "remove", CVS_REQF_RESP },
120: { CVS_REQ_RELEASE, "release", CVS_REQF_RESP },
121: { CVS_REQ_ROOT, "Root", 0 },
122: { CVS_REQ_VALIDRESP, "Valid-responses", 0 },
123: { CVS_REQ_VALIDREQ, "valid-requests", CVS_REQF_RESP },
124: { CVS_REQ_VERSION, "version", CVS_REQF_RESP },
125: { CVS_REQ_NOOP, "noop", CVS_REQF_RESP },
126: { CVS_REQ_DIFF, "diff", CVS_REQF_RESP },
1.29 jfb 127: { CVS_REQ_CI, "ci", CVS_REQF_RESP },
1.1 jfb 128: };
129:
1.18 jfb 130: struct cvs_resp cvs_responses[] = {
131: { CVS_RESP_OK, "ok" },
132: { CVS_RESP_ERROR, "error" },
133: { CVS_RESP_VALIDREQ, "Valid-requests" },
134: { CVS_RESP_M, "M" },
135: { CVS_RESP_MBINARY, "Mbinary" },
136: { CVS_RESP_MT, "MT" },
137: { CVS_RESP_E, "E" },
138: { CVS_RESP_F, "F" },
139: { CVS_RESP_CREATED, "Created" },
140: { CVS_RESP_UPDATED, "Updated" },
141: { CVS_RESP_UPDEXIST, "Update-existing" },
142: { CVS_RESP_MERGED, "Merged" },
143: { CVS_RESP_REMOVED, "Removed" },
144: { CVS_RESP_CKSUM, "Checksum" },
145: { CVS_RESP_CLRSTATDIR, "Clear-static-directory" },
146: { CVS_RESP_SETSTATDIR, "Set-static-directory" },
147: { CVS_RESP_NEWENTRY, "New-entry" },
148: { CVS_RESP_CHECKEDIN, "Checked-in" },
149: { CVS_RESP_MODE, "Mode" },
150: { CVS_RESP_MODTIME, "Mod-time" },
151: { CVS_RESP_MODXPAND, "Module-expansion" },
152: { CVS_RESP_SETSTICKY, "Set-sticky" },
153: { CVS_RESP_CLRSTICKY, "Clear-sticky" },
154: { CVS_RESP_RCSDIFF, "Rcs-diff" },
155: { CVS_RESP_TEMPLATE, "Template" },
1.1 jfb 156: };
157:
1.17 jfb 158: #define CVS_NBREQ (sizeof(cvs_requests)/sizeof(cvs_requests[0]))
159: #define CVS_NBRESP (sizeof(cvs_responses)/sizeof(cvs_responses[0]))
160:
161: /* hack to receive the remote version without outputting it */
1.18 jfb 162: u_int cvs_version_sent = 0;
1.17 jfb 163:
1.13 jfb 164: static char cvs_proto_buf[4096];
165:
166: /*
167: * Output files for protocol logging when the CVS_CLIENT_LOG enviroment
168: * variable is set.
169: */
170: static int cvs_server_logon = 0;
171: static FILE *cvs_server_inlog = NULL;
172: static FILE *cvs_server_outlog = NULL;
173:
1.28 jfb 174: static pid_t cvs_subproc_pid;
175:
1.32 ! jfb 176: /* last directory sent with cvs_senddir() */
! 177: static char cvs_lastdir[MAXPATHLEN] = "";
! 178:
1.13 jfb 179:
180: /*
181: * cvs_connect()
182: *
183: * Open a client connection to the cvs server whose address is given in
184: * the <root> variable. The method used to connect depends on the
185: * setting of the CVS_RSH variable.
1.17 jfb 186: * Once the connection has been established, we first send the list of
187: * responses we support and request the list of supported requests from the
188: * server. Then, a version request is sent and various global flags are sent.
1.13 jfb 189: * Returns 0 on success, or -1 on failure.
190: */
191: int
192: cvs_connect(struct cvsroot *root)
193: {
1.20 jfb 194: int argc, infd[2], outfd[2], errfd[2];
1.13 jfb 195: char *argv[16], *cvs_server_cmd, *vresp;
196:
197: if (pipe(infd) == -1) {
198: cvs_log(LP_ERRNO,
199: "failed to create input pipe for client connection");
200: return (-1);
201: }
202:
203: if (pipe(outfd) == -1) {
204: cvs_log(LP_ERRNO,
205: "failed to create output pipe for client connection");
206: (void)close(infd[0]);
207: (void)close(infd[1]);
208: return (-1);
209: }
210:
1.20 jfb 211: if (pipe(errfd) == -1) {
212: cvs_log(LP_ERRNO,
213: "failed to create error pipe for client connection");
214: (void)close(infd[0]);
215: (void)close(infd[1]);
216: (void)close(outfd[0]);
217: (void)close(outfd[1]);
218: return (-1);
219: }
220:
1.28 jfb 221: cvs_subproc_pid = fork();
222: if (cvs_subproc_pid == -1) {
1.13 jfb 223: cvs_log(LP_ERRNO, "failed to fork for cvs server connection");
224: return (-1);
1.30 deraadt 225: } else if (cvs_subproc_pid == 0) {
1.13 jfb 226: if ((dup2(infd[0], STDIN_FILENO) == -1) ||
1.23 jfb 227: (dup2(outfd[1], STDOUT_FILENO) == -1)) {
1.13 jfb 228: cvs_log(LP_ERRNO,
229: "failed to setup standard streams for cvs server");
230: return (-1);
231: }
232: (void)close(infd[1]);
233: (void)close(outfd[0]);
1.20 jfb 234: (void)close(errfd[0]);
1.13 jfb 235:
236: argc = 0;
237: argv[argc++] = cvs_rsh;
238:
239: if (root->cr_user != NULL) {
240: argv[argc++] = "-l";
241: argv[argc++] = root->cr_user;
242: }
243:
244:
245: cvs_server_cmd = getenv("CVS_SERVER");
246: if (cvs_server_cmd == NULL)
1.20 jfb 247: cvs_server_cmd = CVS_SERVER_DEFAULT;
1.13 jfb 248:
249: argv[argc++] = root->cr_host;
250: argv[argc++] = cvs_server_cmd;
251: argv[argc++] = "server";
252: argv[argc] = NULL;
253:
254: execvp(argv[0], argv);
255: cvs_log(LP_ERRNO, "failed to exec");
256: exit(EX_OSERR);
257: }
258:
259: /* we are the parent */
260: (void)close(infd[0]);
261: (void)close(outfd[1]);
1.20 jfb 262: (void)close(errfd[1]);
1.13 jfb 263:
264: root->cr_srvin = fdopen(infd[1], "w");
265: if (root->cr_srvin == NULL) {
266: cvs_log(LP_ERRNO, "failed to create pipe stream");
267: return (-1);
268: }
269:
270: root->cr_srvout = fdopen(outfd[0], "r");
271: if (root->cr_srvout == NULL) {
272: cvs_log(LP_ERRNO, "failed to create pipe stream");
1.20 jfb 273: return (-1);
274: }
275:
1.21 jfb 276: #if 0
1.20 jfb 277: root->cr_srverr = fdopen(errfd[0], "r");
278: if (root->cr_srverr == NULL) {
279: cvs_log(LP_ERR, "failed to create pipe stream");
1.13 jfb 280: return (-1);
281: }
1.21 jfb 282: #endif
1.13 jfb 283:
284: /* make the streams line-buffered */
285: (void)setvbuf(root->cr_srvin, NULL, _IOLBF, 0);
286: (void)setvbuf(root->cr_srvout, NULL, _IOLBF, 0);
287:
288: cvs_initlog();
289:
290: /*
291: * Send the server the list of valid responses, then ask for valid
292: * requests.
293: */
294:
295: vresp = cvs_resp_getvalid();
296: if (vresp == NULL) {
297: cvs_log(LP_ERR, "can't generate list of valid responses");
298: return (-1);
299: }
300:
301: if (cvs_sendreq(root, CVS_REQ_VALIDRESP, vresp) < 0) {
302: }
303: free(vresp);
304:
305: if (cvs_sendreq(root, CVS_REQ_VALIDREQ, NULL) < 0) {
306: cvs_log(LP_ERR, "failed to get valid requests from server");
307: return (-1);
308: }
309:
1.17 jfb 310: if (cvs_sendreq(root, CVS_REQ_VERSION, NULL) < 0)
311: cvs_log(LP_ERR, "failed to get remote version");
312:
1.13 jfb 313: /* now share our global options with the server */
314: if (verbosity == 1)
315: cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-q");
316: else if (verbosity == 0)
317: cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-Q");
318:
319: if (cvs_nolog)
320: cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-l");
321: if (cvs_readonly)
322: cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-r");
323: if (cvs_trace)
324: cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-t");
325:
1.22 jfb 326: /* now send the CVSROOT to the server unless it's an init */
327: if ((cvs_cmdop != CVS_OP_INIT) &&
328: (cvs_sendreq(root, CVS_REQ_ROOT, root->cr_dir) < 0))
1.13 jfb 329: return (-1);
330:
331: /* not sure why, but we have to send this */
332: if (cvs_sendreq(root, CVS_REQ_USEUNCHANGED, NULL) < 0)
333: return (-1);
334:
335: #ifdef CVS_ZLIB
336: /* if compression was requested, initialize it */
337: #endif
338:
339: cvs_log(LP_DEBUG, "connected to %s", root->cr_host);
340:
341: return (0);
342: }
343:
344:
345: /*
346: * cvs_disconnect()
347: *
348: * Disconnect from the cvs server.
349: */
350: void
351: cvs_disconnect(struct cvsroot *root)
352: {
353: cvs_log(LP_DEBUG, "closing connection to %s", root->cr_host);
354: if (root->cr_srvin != NULL) {
355: (void)fclose(root->cr_srvin);
356: root->cr_srvin = NULL;
357: }
358: if (root->cr_srvout != NULL) {
359: (void)fclose(root->cr_srvout);
360: root->cr_srvout = NULL;
361: }
362: }
363:
1.1 jfb 364:
365: /*
366: * cvs_req_getbyid()
367: *
368: */
1.13 jfb 369: struct cvs_req*
1.1 jfb 370: cvs_req_getbyid(int reqid)
371: {
372: u_int i;
373:
374: for (i = 0; i < CVS_NBREQ; i++)
375: if (cvs_requests[i].req_id == reqid)
1.13 jfb 376: return &(cvs_requests[i]);
1.31 tedu 377:
1.1 jfb 378: return (NULL);
379: }
380:
381:
382: /*
383: * cvs_req_getbyname()
384: */
1.13 jfb 385: struct cvs_req*
1.1 jfb 386: cvs_req_getbyname(const char *rname)
387: {
388: u_int i;
389:
390: for (i = 0; i < CVS_NBREQ; i++)
391: if (strcmp(cvs_requests[i].req_str, rname) == 0)
1.13 jfb 392: return &(cvs_requests[i]);
1.1 jfb 393:
1.13 jfb 394: return (NULL);
1.1 jfb 395: }
396:
397:
398: /*
399: * cvs_req_getvalid()
400: *
401: * Build a space-separated list of all the requests that this protocol
402: * implementation supports.
403: */
404: char*
405: cvs_req_getvalid(void)
406: {
407: u_int i;
408: size_t len;
409: char *vrstr;
410: BUF *buf;
411:
412: buf = cvs_buf_alloc(512, BUF_AUTOEXT);
413: if (buf == NULL)
414: return (NULL);
415:
416: cvs_buf_set(buf, cvs_requests[0].req_str,
417: strlen(cvs_requests[0].req_str), 0);
418:
419: for (i = 1; i < CVS_NBREQ; i++) {
420: if ((cvs_buf_putc(buf, ' ') < 0) ||
421: (cvs_buf_append(buf, cvs_requests[i].req_str,
422: strlen(cvs_requests[i].req_str)) < 0)) {
423: cvs_buf_free(buf);
424: return (NULL);
425: }
426: }
427:
428: /* NUL-terminate */
429: if (cvs_buf_putc(buf, '\0') < 0) {
430: cvs_buf_free(buf);
431: return (NULL);
432: }
433:
434: len = cvs_buf_size(buf);
435: vrstr = (char *)malloc(len);
1.27 jfb 436: if (vrstr == NULL) {
437: cvs_buf_free(buf);
438: return (NULL);
439: }
1.1 jfb 440:
441: cvs_buf_copy(buf, 0, vrstr, len);
442: cvs_buf_free(buf);
443:
444: return (vrstr);
445: }
446:
447:
448: /*
449: * cvs_resp_getbyid()
450: *
451: */
1.13 jfb 452: struct cvs_resp*
1.1 jfb 453: cvs_resp_getbyid(int respid)
454: {
455: u_int i;
456:
457: for (i = 0; i < CVS_NBREQ; i++)
1.13 jfb 458: if (cvs_responses[i].resp_id == (u_int)respid)
459: return &(cvs_responses[i]);
1.31 tedu 460:
1.1 jfb 461: return (NULL);
462: }
463:
464:
465: /*
466: * cvs_resp_getbyname()
467: */
1.13 jfb 468: struct cvs_resp*
1.1 jfb 469: cvs_resp_getbyname(const char *rname)
470: {
471: u_int i;
472:
473: for (i = 0; i < CVS_NBREQ; i++)
474: if (strcmp(cvs_responses[i].resp_str, rname) == 0)
1.13 jfb 475: return &(cvs_responses[i]);
1.1 jfb 476:
1.13 jfb 477: return (NULL);
1.1 jfb 478: }
479:
480:
481: /*
482: * cvs_resp_getvalid()
483: *
484: * Build a space-separated list of all the responses that this protocol
485: * implementation supports.
486: */
487:
488: char*
489: cvs_resp_getvalid(void)
490: {
491: u_int i;
492: size_t len;
493: char *vrstr;
494: BUF *buf;
495:
496: buf = cvs_buf_alloc(512, BUF_AUTOEXT);
497: if (buf == NULL)
498: return (NULL);
499:
500: cvs_buf_set(buf, cvs_responses[0].resp_str,
501: strlen(cvs_responses[0].resp_str), 0);
502:
503: for (i = 1; i < CVS_NBRESP; i++) {
504: if ((cvs_buf_putc(buf, ' ') < 0) ||
505: (cvs_buf_append(buf, cvs_responses[i].resp_str,
506: strlen(cvs_responses[i].resp_str)) < 0)) {
507: cvs_buf_free(buf);
508: return (NULL);
509: }
510: }
511:
512: /* NUL-terminate */
513: if (cvs_buf_putc(buf, '\0') < 0) {
514: cvs_buf_free(buf);
515: return (NULL);
516: }
517:
518: len = cvs_buf_size(buf);
519: vrstr = (char *)malloc(len);
1.27 jfb 520: if (vrstr == NULL) {
521: cvs_buf_free(buf);
522: return (NULL);
523: }
1.1 jfb 524:
525: cvs_buf_copy(buf, 0, vrstr, len);
526: cvs_buf_free(buf);
527:
528: return (vrstr);
529: }
530:
531:
532: /*
533: * cvs_sendfile()
534: *
535: * Send the mode and size of a file followed by the file's contents.
536: * Returns 0 on success, or -1 on failure.
537: */
538: int
1.13 jfb 539: cvs_sendfile(struct cvsroot *root, const char *path)
1.1 jfb 540: {
541: int fd;
542: ssize_t ret;
543: char buf[4096];
544: struct stat st;
545:
546: if (stat(path, &st) == -1) {
547: cvs_log(LP_ERRNO, "failed to stat `%s'", path);
548: return (-1);
549: }
550:
1.24 jfb 551: if (cvs_modetostr(st.st_mode, buf, sizeof(buf)) < 0)
552: return (-1);
553:
1.1 jfb 554: fd = open(path, O_RDONLY, 0);
555: if (fd == -1) {
556: return (-1);
557: }
558:
1.13 jfb 559: cvs_sendln(root, buf);
1.1 jfb 560: snprintf(buf, sizeof(buf), "%lld\n", st.st_size);
1.13 jfb 561: cvs_sendln(root, buf);
1.1 jfb 562:
563: while ((ret = read(fd, buf, sizeof(buf))) != 0) {
564: if (ret == -1) {
1.24 jfb 565: (void)close(fd);
1.1 jfb 566: cvs_log(LP_ERRNO, "failed to read file `%s'", path);
567: return (-1);
568: }
569:
1.13 jfb 570: cvs_sendraw(root, buf, (size_t)ret);
1.1 jfb 571:
572: }
573:
574: (void)close(fd);
575:
576: return (0);
577: }
578:
579:
580: /*
581: * cvs_recvfile()
582: *
583: * Receive the mode and size of a file followed the file's contents and
584: * create or update the file whose path is <path> with the received
585: * information.
586: */
1.14 jfb 587: BUF*
588: cvs_recvfile(struct cvsroot *root, mode_t *mode)
1.1 jfb 589: {
590: size_t len;
591: ssize_t ret;
592: off_t fsz, cnt;
593: char buf[4096], *ep;
1.14 jfb 594: BUF *fbuf;
595:
596: fbuf = cvs_buf_alloc(sizeof(buf), BUF_AUTOEXT);
597: if (fbuf == NULL)
598: return (NULL);
1.1 jfb 599:
1.13 jfb 600: if ((cvs_getln(root, buf, sizeof(buf)) < 0) ||
1.14 jfb 601: (cvs_strtomode(buf, mode) < 0)) {
602: return (NULL);
1.1 jfb 603: }
604:
1.13 jfb 605: cvs_getln(root, buf, sizeof(buf));
1.1 jfb 606:
607: fsz = (off_t)strtol(buf, &ep, 10);
608: if (*ep != '\0') {
609: cvs_log(LP_ERR, "parse error in file size transmission");
1.14 jfb 610: return (NULL);
1.1 jfb 611: }
612:
613: cnt = 0;
614: do {
615: len = MIN(sizeof(buf), (size_t)(fsz - cnt));
1.6 jfb 616: if (len == 0)
617: break;
1.13 jfb 618: ret = cvs_recvraw(root, buf, len);
1.1 jfb 619: if (ret == -1) {
1.14 jfb 620: cvs_buf_free(fbuf);
621: return (NULL);
1.1 jfb 622: }
623:
1.14 jfb 624: if (cvs_buf_append(fbuf, buf, (size_t)ret) == -1) {
625: cvs_log(LP_ERR,
626: "failed to append received file data");
627: cvs_buf_free(fbuf);
628: return (NULL);
1.1 jfb 629: }
630:
631: cnt += (off_t)ret;
632: } while (cnt < fsz);
633:
1.14 jfb 634: return (fbuf);
1.1 jfb 635: }
1.12 jfb 636:
637:
638: /*
639: * cvs_sendreq()
640: *
641: * Send a request to the server of type <rid>, with optional arguments
642: * contained in <arg>, which should not be terminated by a newline.
643: * Returns 0 on success, or -1 on failure.
644: */
645: int
1.13 jfb 646: cvs_sendreq(struct cvsroot *root, u_int rid, const char *arg)
1.12 jfb 647: {
648: int ret;
1.13 jfb 649: struct cvs_req *req;
1.12 jfb 650:
651: if (root->cr_srvin == NULL) {
652: cvs_log(LP_ERR, "cannot send request: Not connected");
653: return (-1);
654: }
655:
1.13 jfb 656: req = cvs_req_getbyid(rid);
657: if (req == NULL) {
1.12 jfb 658: cvs_log(LP_ERR, "unsupported request type %u", rid);
659: return (-1);
660: }
661:
1.18 jfb 662: /* is this request supported by the server? */
663: if (!CVS_GETVR(root, req->req_id)) {
1.25 jfb 664: cvs_log(LP_WARN, "remote end does not support request `%s'",
1.18 jfb 665: req->req_str);
666: return (-1);
667: }
668:
1.13 jfb 669: snprintf(cvs_proto_buf, sizeof(cvs_proto_buf), "%s%s%s\n",
670: req->req_str, (arg == NULL) ? "" : " ", (arg == NULL) ? "" : arg);
1.12 jfb 671:
672: if (cvs_server_inlog != NULL)
1.13 jfb 673: fputs(cvs_proto_buf, cvs_server_inlog);
1.12 jfb 674:
1.13 jfb 675: ret = fputs(cvs_proto_buf, root->cr_srvin);
1.12 jfb 676: if (ret == EOF) {
677: cvs_log(LP_ERRNO, "failed to send request to server");
678: return (-1);
679: }
1.17 jfb 680:
681: if (rid == CVS_REQ_VERSION)
682: cvs_version_sent = 1;
1.12 jfb 683:
1.13 jfb 684: if (req->req_flags & CVS_REQF_RESP)
1.12 jfb 685: ret = cvs_getresp(root);
686:
1.13 jfb 687: return (ret);
1.12 jfb 688: }
689:
690:
691: /*
692: * cvs_getresp()
693: *
694: * Get a response from the server. This call will actually read and handle
695: * responses from the server until one of the response handlers returns
696: * non-zero (either an error occured or the end of the response was reached).
697: * Returns the number of handled commands on success, or -1 on failure.
698: */
699: int
1.13 jfb 700: cvs_getresp(struct cvsroot *root)
1.12 jfb 701: {
1.13 jfb 702: int nbcmd, ret;
703: size_t len;
1.12 jfb 704:
705: nbcmd = 0;
706:
707: do {
708: /* wait for incoming data */
1.13 jfb 709: if (fgets(cvs_proto_buf, sizeof(cvs_proto_buf),
1.12 jfb 710: root->cr_srvout) == NULL) {
711: if (feof(root->cr_srvout))
712: return (0);
713: cvs_log(LP_ERRNO,
714: "failed to read response from server");
715: return (-1);
716: }
717:
718: if (cvs_server_outlog != NULL)
1.13 jfb 719: fputs(cvs_proto_buf, cvs_server_outlog);
1.12 jfb 720:
1.13 jfb 721: if ((len = strlen(cvs_proto_buf)) != 0) {
722: if (cvs_proto_buf[len - 1] != '\n') {
1.12 jfb 723: /* truncated line */
1.30 deraadt 724: } else
1.13 jfb 725: cvs_proto_buf[--len] = '\0';
1.12 jfb 726: }
727:
1.13 jfb 728: ret = cvs_resp_handle(root, cvs_proto_buf);
1.12 jfb 729: nbcmd++;
730: } while (ret == 0);
731:
732: if (ret > 0)
733: ret = nbcmd;
734: return (ret);
735: }
736:
737:
738: /*
1.13 jfb 739: * cvs_getln()
740: *
1.18 jfb 741: * Get a line from the remote end and store it in <lbuf>. The terminating
1.13 jfb 742: * newline character is stripped from the result.
743: */
744: int
745: cvs_getln(struct cvsroot *root, char *lbuf, size_t len)
746: {
747: size_t rlen;
1.18 jfb 748: FILE *in;
1.13 jfb 749:
1.18 jfb 750: if (cvs_cmdop == CVS_OP_SERVER)
751: in = stdin;
752: else
753: in = root->cr_srvout;
754:
755: if (fgets(lbuf, len, in) == NULL) {
756: if (ferror(in)) {
757: cvs_log(LP_ERRNO, "failed to read line");
1.13 jfb 758: return (-1);
759: }
760:
1.18 jfb 761: if (feof(in))
1.13 jfb 762: *lbuf = '\0';
763: }
764:
765: if (cvs_server_outlog != NULL)
766: fputs(lbuf, cvs_server_outlog);
767:
768: rlen = strlen(lbuf);
769: if ((rlen > 0) && (lbuf[rlen - 1] == '\n'))
770: lbuf[--rlen] = '\0';
771:
772: return (0);
773: }
774:
1.19 jfb 775:
1.13 jfb 776: /*
1.12 jfb 777: * cvs_sendresp()
778: *
1.19 jfb 779: * Send a response of type <rid> to the client, with optional arguments
1.12 jfb 780: * contained in <arg>, which should not be terminated by a newline.
781: * Returns 0 on success, or -1 on failure.
782: */
783: int
784: cvs_sendresp(u_int rid, const char *arg)
785: {
786: int ret;
1.19 jfb 787: struct cvs_resp *resp;
1.12 jfb 788:
789: resp = cvs_resp_getbyid(rid);
1.13 jfb 790: if (resp == NULL) {
1.12 jfb 791: cvs_log(LP_ERR, "unsupported response type %u", rid);
792: return (-1);
793: }
794:
1.19 jfb 795: ret = fputs(resp->resp_str, stdout);
1.12 jfb 796: if (ret == EOF) {
797: cvs_log(LP_ERRNO, "failed to send response to client");
1.30 deraadt 798: } else {
1.19 jfb 799: if (arg != NULL) {
800: putc(' ', stdout);
801: fputs(arg, stdout);
802: }
1.12 jfb 803: putc('\n', stdout);
804: }
805: return (0);
806: }
807:
808:
1.19 jfb 809: #ifdef notyet
1.12 jfb 810: /*
811: * cvs_getreq()
812: *
813: * Get a request from the client.
814: */
815: int
816: cvs_getreq(void)
817: {
818: int nbcmd;
819:
820: nbcmd = 0;
821:
822: do {
823: /* wait for incoming data */
1.13 jfb 824: if (fgets(cvs_proto_buf, sizeof(cvs_proto_buf),
1.12 jfb 825: stdin) == NULL) {
826: if (feof(stdin))
827: return (0);
828: cvs_log(LP_ERRNO,
829: "failed to read request from client");
830: return (-1);
831: }
832:
1.13 jfb 833: if ((len = strlen(cvs_proto_buf)) != 0) {
834: if (cvs_proto_buf[len - 1] != '\n') {
1.12 jfb 835: /* truncated line */
1.30 deraadt 836: } else
1.13 jfb 837: cvs_proto_buf[--len] = '\0';
1.12 jfb 838: }
839:
1.13 jfb 840: ret = cvs_resp_handle(cvs_proto_buf);
1.12 jfb 841: } while (ret == 0);
842: }
843: #endif
844:
845:
846: /*
847: * cvs_sendln()
848: *
1.18 jfb 849: * Send a single line <line> string to the remote end. The line is sent as is,
1.12 jfb 850: * without any modifications.
851: * Returns 0 on success, or -1 on failure.
852: */
853: int
854: cvs_sendln(struct cvsroot *root, const char *line)
855: {
856: int nl;
857: size_t len;
1.18 jfb 858: FILE *out;
859:
860: if (cvs_cmdop == CVS_OP_SERVER)
861: out = stdout;
862: else
863: out = root->cr_srvin;
1.12 jfb 864:
865: nl = 0;
866: len = strlen(line);
867:
868: if ((len > 0) && (line[len - 1] != '\n'))
869: nl = 1;
870:
871: if (cvs_server_inlog != NULL) {
872: fputs(line, cvs_server_inlog);
873: if (nl)
874: fputc('\n', cvs_server_inlog);
875: }
1.18 jfb 876: fputs(line, out);
1.12 jfb 877: if (nl)
1.18 jfb 878: fputc('\n', out);
1.12 jfb 879: return (0);
880: }
881:
882:
883: /*
1.13 jfb 884: * cvs_sendraw()
1.12 jfb 885: *
886: * Send the first <len> bytes from the buffer <src> to the server.
887: */
888: int
1.13 jfb 889: cvs_sendraw(struct cvsroot *root, const void *src, size_t len)
1.12 jfb 890: {
1.18 jfb 891: FILE *out;
892:
893: if (cvs_cmdop == CVS_OP_SERVER)
894: out = stdout;
895: else
896: out = root->cr_srvin;
897:
1.12 jfb 898: if (cvs_server_inlog != NULL)
899: fwrite(src, sizeof(char), len, cvs_server_inlog);
1.18 jfb 900: if (fwrite(src, sizeof(char), len, out) < len) {
1.12 jfb 901: return (-1);
902: }
903:
904: return (0);
905: }
906:
907:
908: /*
1.13 jfb 909: * cvs_recvraw()
1.12 jfb 910: *
911: * Receive the first <len> bytes from the buffer <src> to the server.
912: */
913: ssize_t
1.13 jfb 914: cvs_recvraw(struct cvsroot *root, void *dst, size_t len)
1.12 jfb 915: {
916: size_t ret;
1.18 jfb 917: FILE *in;
918:
919: if (cvs_cmdop == CVS_OP_SERVER)
920: in = stdin;
921: else
922: in = root->cr_srvout;
1.12 jfb 923:
1.18 jfb 924: ret = fread(dst, sizeof(char), len, in);
1.12 jfb 925: if (ret == 0)
926: return (-1);
927: if (cvs_server_outlog != NULL)
928: fwrite(dst, sizeof(char), len, cvs_server_outlog);
929: return (ssize_t)ret;
930: }
931:
932:
933: /*
1.13 jfb 934: * cvs_senddir()
1.12 jfb 935: *
1.32 ! jfb 936: * Send a `Directory' request along with the 2 paths that follow it. If
! 937: * the directory info to be sent is the same as the last info sent, the
! 938: * call does nothing and simply returns without an error.
1.12 jfb 939: */
940: int
1.31 tedu 941: cvs_senddir(struct cvsroot *root, CVSFILE *dir)
1.12 jfb 942: {
1.28 jfb 943: char lbuf[MAXPATHLEN], rbuf[MAXPATHLEN];
1.12 jfb 944:
1.32 ! jfb 945: cvs_file_getpath(dir, lbuf, sizeof(lbuf));
! 946: if (strcmp(lbuf, cvs_lastdir) == 0)
! 947: return (0);
! 948:
1.13 jfb 949: if (dir->cf_ddat->cd_repo == NULL)
1.28 jfb 950: strlcpy(rbuf, root->cr_dir, sizeof(rbuf));
1.13 jfb 951: else
1.28 jfb 952: snprintf(rbuf, sizeof(rbuf), "%s/%s", root->cr_dir,
1.13 jfb 953: dir->cf_ddat->cd_repo);
1.12 jfb 954:
1.28 jfb 955:
956: if ((cvs_sendreq(root, CVS_REQ_DIRECTORY, lbuf) < 0) ||
957: (cvs_sendln(root, rbuf) < 0))
1.12 jfb 958: return (-1);
1.32 ! jfb 959:
! 960: strlcpy(cvs_lastdir, lbuf, sizeof(cvs_lastdir));
1.12 jfb 961:
962: return (0);
963: }
964:
965:
966: /*
1.13 jfb 967: * cvs_sendarg()
1.12 jfb 968: *
969: * Send the argument <arg> to the server. The argument <append> is used to
970: * determine if the argument should be simply appended to the last argument
971: * sent or if it should be created as a new argument (0).
972: */
973: int
1.13 jfb 974: cvs_sendarg(struct cvsroot *root, const char *arg, int append)
1.12 jfb 975: {
1.13 jfb 976: return cvs_sendreq(root, ((append == 0) ?
977: CVS_REQ_ARGUMENT : CVS_REQ_ARGUMENTX), arg);
1.12 jfb 978: }
979:
980:
981: /*
1.13 jfb 982: * cvs_sendentry()
1.12 jfb 983: *
984: * Send an `Entry' request to the server along with the mandatory fields from
985: * the CVS entry <ent> (which are the name and revision).
986: */
987: int
1.13 jfb 988: cvs_sendentry(struct cvsroot *root, const struct cvs_ent *ent)
1.12 jfb 989: {
990: char ebuf[128], numbuf[64];
991:
992: snprintf(ebuf, sizeof(ebuf), "/%s/%s///", ent->ce_name,
993: rcsnum_tostr(ent->ce_rev, numbuf, sizeof(numbuf)));
994:
1.13 jfb 995: return cvs_sendreq(root, CVS_REQ_ENTRY, ebuf);
1.12 jfb 996: }
997:
998:
999: /*
1.13 jfb 1000: * cvs_initlog()
1.12 jfb 1001: *
1002: * Initialize protocol logging if the CVS_CLIENT_LOG environment variable is
1003: * set. In this case, the variable's value is used as a path to which the
1004: * appropriate suffix is added (".in" for server input and ".out" for server
1005: * output.
1006: * Returns 0 on success, or -1 on failure.
1007: */
1008: static int
1.13 jfb 1009: cvs_initlog(void)
1.12 jfb 1010: {
1011: char *env, fpath[MAXPATHLEN];
1012:
1.13 jfb 1013: /* avoid doing it more than once */
1014: if (cvs_server_logon)
1015: return (0);
1016:
1.12 jfb 1017: env = getenv("CVS_CLIENT_LOG");
1018: if (env == NULL)
1019: return (0);
1020:
1021: strlcpy(fpath, env, sizeof(fpath));
1022: strlcat(fpath, ".in", sizeof(fpath));
1023: cvs_server_inlog = fopen(fpath, "w");
1024: if (cvs_server_inlog == NULL) {
1025: cvs_log(LP_ERRNO, "failed to open server input log `%s'",
1026: fpath);
1027: return (-1);
1028: }
1029:
1030: strlcpy(fpath, env, sizeof(fpath));
1031: strlcat(fpath, ".out", sizeof(fpath));
1032: cvs_server_outlog = fopen(fpath, "w");
1033: if (cvs_server_outlog == NULL) {
1034: cvs_log(LP_ERRNO, "failed to open server output log `%s'",
1035: fpath);
1036: return (-1);
1037: }
1038:
1039: /* make the streams line-buffered */
1040: setvbuf(cvs_server_inlog, NULL, _IOLBF, 0);
1041: setvbuf(cvs_server_outlog, NULL, _IOLBF, 0);
1042:
1.13 jfb 1043: cvs_server_logon = 1;
1.12 jfb 1044:
1045: return (0);
1046: }
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