Annotation of src/usr.bin/cvs/proto.c, Revision 1.44
1.44 ! tedu 1: /* $OpenBSD: proto.c,v 1.43 2005/03/13 19:56:14 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:
46: #include <fcntl.h>
47: #include <stdio.h>
48: #include <errno.h>
1.38 jfb 49: #include <libgen.h>
1.1 jfb 50: #include <stdlib.h>
51: #include <unistd.h>
52: #include <string.h>
53: #include <sysexits.h>
54:
55: #include "buf.h"
56: #include "cvs.h"
57: #include "log.h"
1.14 jfb 58: #include "file.h"
1.13 jfb 59: #include "proto.h"
1.1 jfb 60:
61:
1.11 jfb 62: /* request flags */
63: #define CVS_REQF_RESP 0x01
64:
65:
1.13 jfb 66: static int cvs_initlog (void);
1.1 jfb 67:
1.18 jfb 68: struct cvs_req cvs_requests[] = {
69: { CVS_REQ_DIRECTORY, "Directory", 0 },
70: { CVS_REQ_MAXDOTDOT, "Max-dotdot", 0 },
71: { CVS_REQ_STATICDIR, "Static-directory", 0 },
72: { CVS_REQ_STICKY, "Sticky", 0 },
73: { CVS_REQ_ENTRY, "Entry", 0 },
74: { CVS_REQ_ENTRYEXTRA, "EntryExtra", 0 },
75: { CVS_REQ_CHECKINTIME, "Checkin-time", 0 },
76: { CVS_REQ_MODIFIED, "Modified", 0 },
77: { CVS_REQ_ISMODIFIED, "Is-modified", 0 },
78: { CVS_REQ_UNCHANGED, "Unchanged", 0 },
79: { CVS_REQ_USEUNCHANGED, "UseUnchanged", 0 },
80: { CVS_REQ_NOTIFY, "Notify", 0 },
81: { CVS_REQ_NOTIFYUSER, "NotifyUser", 0 },
82: { CVS_REQ_QUESTIONABLE, "Questionable", 0 },
83: { CVS_REQ_CASE, "Case", 0 },
84: { CVS_REQ_UTF8, "Utf8", 0 },
85: { CVS_REQ_ARGUMENT, "Argument", 0 },
86: { CVS_REQ_ARGUMENTX, "Argumentx", 0 },
87: { CVS_REQ_GLOBALOPT, "Global_option", 0 },
88: { CVS_REQ_GZIPSTREAM, "Gzip-stream", 0 },
89: { CVS_REQ_READCVSRC2, "read-cvsrc2", 0 },
90: { CVS_REQ_READWRAP, "read-cvswrappers", 0 },
91: { CVS_REQ_READIGNORE, "read-cvsignore", 0 },
92: { CVS_REQ_ERRIFREADER, "Error-If-Reader", 0 },
93: { CVS_REQ_VALIDRCSOPT, "Valid-RcsOptions", 0 },
94: { CVS_REQ_SET, "Set", 0 },
95: { CVS_REQ_XPANDMOD, "expand-modules", CVS_REQF_RESP },
1.26 jfb 96: { CVS_REQ_LOG, "log", CVS_REQF_RESP },
1.18 jfb 97: { CVS_REQ_CO, "co", CVS_REQF_RESP },
98: { CVS_REQ_EXPORT, "export", CVS_REQF_RESP },
1.26 jfb 99: { CVS_REQ_ANNOTATE, "annotate", CVS_REQF_RESP },
100: { CVS_REQ_RDIFF, "rdiff", CVS_REQF_RESP },
1.18 jfb 101: { CVS_REQ_RTAG, "rtag", CVS_REQF_RESP },
102: { CVS_REQ_INIT, "init", CVS_REQF_RESP },
103: { CVS_REQ_STATUS, "status", CVS_REQF_RESP },
104: { CVS_REQ_UPDATE, "update", CVS_REQF_RESP },
1.26 jfb 105: { CVS_REQ_HISTORY, "history", CVS_REQF_RESP },
1.18 jfb 106: { CVS_REQ_IMPORT, "import", CVS_REQF_RESP },
107: { CVS_REQ_ADD, "add", CVS_REQF_RESP },
108: { CVS_REQ_REMOVE, "remove", CVS_REQF_RESP },
109: { CVS_REQ_RELEASE, "release", CVS_REQF_RESP },
110: { CVS_REQ_ROOT, "Root", 0 },
111: { CVS_REQ_VALIDRESP, "Valid-responses", 0 },
112: { CVS_REQ_VALIDREQ, "valid-requests", CVS_REQF_RESP },
113: { CVS_REQ_VERSION, "version", CVS_REQF_RESP },
114: { CVS_REQ_NOOP, "noop", CVS_REQF_RESP },
115: { CVS_REQ_DIFF, "diff", CVS_REQF_RESP },
1.29 jfb 116: { CVS_REQ_CI, "ci", CVS_REQF_RESP },
1.35 jfb 117: { CVS_REQ_TAG, "tag", CVS_REQF_RESP },
1.41 joris 118: { CVS_REQ_ADMIN, "admin", CVS_REQF_RESP },
1.1 jfb 119: };
120:
1.18 jfb 121: struct cvs_resp cvs_responses[] = {
122: { CVS_RESP_OK, "ok" },
123: { CVS_RESP_ERROR, "error" },
124: { CVS_RESP_VALIDREQ, "Valid-requests" },
125: { CVS_RESP_M, "M" },
126: { CVS_RESP_MBINARY, "Mbinary" },
127: { CVS_RESP_MT, "MT" },
128: { CVS_RESP_E, "E" },
129: { CVS_RESP_F, "F" },
130: { CVS_RESP_CREATED, "Created" },
131: { CVS_RESP_UPDATED, "Updated" },
132: { CVS_RESP_UPDEXIST, "Update-existing" },
133: { CVS_RESP_MERGED, "Merged" },
134: { CVS_RESP_REMOVED, "Removed" },
135: { CVS_RESP_CKSUM, "Checksum" },
136: { CVS_RESP_CLRSTATDIR, "Clear-static-directory" },
137: { CVS_RESP_SETSTATDIR, "Set-static-directory" },
138: { CVS_RESP_NEWENTRY, "New-entry" },
139: { CVS_RESP_CHECKEDIN, "Checked-in" },
140: { CVS_RESP_MODE, "Mode" },
141: { CVS_RESP_MODTIME, "Mod-time" },
142: { CVS_RESP_MODXPAND, "Module-expansion" },
143: { CVS_RESP_SETSTICKY, "Set-sticky" },
144: { CVS_RESP_CLRSTICKY, "Clear-sticky" },
145: { CVS_RESP_RCSDIFF, "Rcs-diff" },
146: { CVS_RESP_TEMPLATE, "Template" },
1.34 jfb 147: { CVS_RESP_COPYFILE, "Copy-file" },
1.1 jfb 148: };
149:
1.17 jfb 150: #define CVS_NBREQ (sizeof(cvs_requests)/sizeof(cvs_requests[0]))
151: #define CVS_NBRESP (sizeof(cvs_responses)/sizeof(cvs_responses[0]))
152:
153: /* hack to receive the remote version without outputting it */
1.18 jfb 154: u_int cvs_version_sent = 0;
1.17 jfb 155:
1.13 jfb 156: static char cvs_proto_buf[4096];
157:
158: /*
1.37 david 159: * Output files for protocol logging when the CVS_CLIENT_LOG environment
1.13 jfb 160: * variable is set.
161: */
162: static int cvs_server_logon = 0;
163: static FILE *cvs_server_inlog = NULL;
164: static FILE *cvs_server_outlog = NULL;
165:
1.28 jfb 166: static pid_t cvs_subproc_pid;
167:
1.32 jfb 168: /* last directory sent with cvs_senddir() */
169: static char cvs_lastdir[MAXPATHLEN] = "";
170:
1.13 jfb 171:
172: /*
173: * cvs_connect()
174: *
175: * Open a client connection to the cvs server whose address is given in
176: * the <root> variable. The method used to connect depends on the
177: * setting of the CVS_RSH variable.
1.17 jfb 178: * Once the connection has been established, we first send the list of
179: * responses we support and request the list of supported requests from the
180: * server. Then, a version request is sent and various global flags are sent.
1.13 jfb 181: * Returns 0 on success, or -1 on failure.
182: */
183: int
184: cvs_connect(struct cvsroot *root)
185: {
1.20 jfb 186: int argc, infd[2], outfd[2], errfd[2];
1.13 jfb 187: char *argv[16], *cvs_server_cmd, *vresp;
188:
1.36 jfb 189: if (root->cr_method == CVS_METHOD_PSERVER) {
190: cvs_log(LP_ERR, "no pserver support due to security issues");
191: return (-1);
192: } else if ((root->cr_method == CVS_METHOD_KSERVER) ||
193: (root->cr_method == CVS_METHOD_GSERVER) ||
194: (root->cr_method == CVS_METHOD_EXT) ||
195: (root->cr_method == CVS_METHOD_FORK)) {
196: cvs_log(LP_ERR, "connection method not supported yet");
197: return (-1);
198: }
1.33 jfb 199:
200: if (root->cr_flags & CVS_ROOT_CONNECTED) {
201: cvs_log(LP_NOTICE, "already connected to CVSROOT");
202: return (0);
203: }
204:
1.13 jfb 205: if (pipe(infd) == -1) {
206: cvs_log(LP_ERRNO,
207: "failed to create input pipe for client connection");
208: return (-1);
209: }
210:
211: if (pipe(outfd) == -1) {
212: cvs_log(LP_ERRNO,
213: "failed to create output pipe for client connection");
214: (void)close(infd[0]);
215: (void)close(infd[1]);
216: return (-1);
217: }
218:
1.20 jfb 219: if (pipe(errfd) == -1) {
220: cvs_log(LP_ERRNO,
221: "failed to create error pipe for client connection");
222: (void)close(infd[0]);
223: (void)close(infd[1]);
224: (void)close(outfd[0]);
225: (void)close(outfd[1]);
226: return (-1);
227: }
228:
1.28 jfb 229: cvs_subproc_pid = fork();
230: if (cvs_subproc_pid == -1) {
1.13 jfb 231: cvs_log(LP_ERRNO, "failed to fork for cvs server connection");
232: return (-1);
1.30 deraadt 233: } else if (cvs_subproc_pid == 0) {
1.13 jfb 234: if ((dup2(infd[0], STDIN_FILENO) == -1) ||
1.23 jfb 235: (dup2(outfd[1], STDOUT_FILENO) == -1)) {
1.13 jfb 236: cvs_log(LP_ERRNO,
237: "failed to setup standard streams for cvs server");
238: return (-1);
239: }
240: (void)close(infd[1]);
241: (void)close(outfd[0]);
1.20 jfb 242: (void)close(errfd[0]);
1.13 jfb 243:
244: argc = 0;
245: argv[argc++] = cvs_rsh;
246:
247: if (root->cr_user != NULL) {
248: argv[argc++] = "-l";
249: argv[argc++] = root->cr_user;
250: }
251:
252: cvs_server_cmd = getenv("CVS_SERVER");
253: if (cvs_server_cmd == NULL)
1.20 jfb 254: cvs_server_cmd = CVS_SERVER_DEFAULT;
1.13 jfb 255:
256: argv[argc++] = root->cr_host;
257: argv[argc++] = cvs_server_cmd;
258: argv[argc++] = "server";
259: argv[argc] = NULL;
260:
261: execvp(argv[0], argv);
262: cvs_log(LP_ERRNO, "failed to exec");
263: exit(EX_OSERR);
264: }
265:
266: /* we are the parent */
267: (void)close(infd[0]);
268: (void)close(outfd[1]);
1.20 jfb 269: (void)close(errfd[1]);
1.13 jfb 270:
271: root->cr_srvin = fdopen(infd[1], "w");
272: if (root->cr_srvin == NULL) {
273: cvs_log(LP_ERRNO, "failed to create pipe stream");
274: return (-1);
275: }
276:
277: root->cr_srvout = fdopen(outfd[0], "r");
278: if (root->cr_srvout == NULL) {
279: cvs_log(LP_ERRNO, "failed to create pipe stream");
1.20 jfb 280: return (-1);
281: }
282:
1.13 jfb 283: /* make the streams line-buffered */
284: (void)setvbuf(root->cr_srvin, NULL, _IOLBF, 0);
285: (void)setvbuf(root->cr_srvout, NULL, _IOLBF, 0);
286:
287: cvs_initlog();
288:
289: /*
290: * Send the server the list of valid responses, then ask for valid
291: * requests.
292: */
293:
1.40 jfb 294: if ((vresp = cvs_resp_getvalid()) == NULL) {
1.13 jfb 295: cvs_log(LP_ERR, "can't generate list of valid responses");
296: return (-1);
297: }
298:
299: if (cvs_sendreq(root, CVS_REQ_VALIDRESP, vresp) < 0) {
1.40 jfb 300: cvs_log(LP_ERR, "failed to get valid responses");
301: free(vresp);
302: return (-1);
1.13 jfb 303: }
304: free(vresp);
305:
306: if (cvs_sendreq(root, CVS_REQ_VALIDREQ, NULL) < 0) {
307: cvs_log(LP_ERR, "failed to get valid requests from server");
308: return (-1);
309: }
310:
1.40 jfb 311: /* don't fail if this request doesn't work */
1.17 jfb 312: if (cvs_sendreq(root, CVS_REQ_VERSION, NULL) < 0)
1.40 jfb 313: cvs_log(LP_WARN, "failed to get remote version");
1.17 jfb 314:
1.13 jfb 315: /* now share our global options with the server */
1.40 jfb 316: if ((verbosity == 1) &&
317: (cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-q") < 0))
318: return (-1);
319: else if ((verbosity == 0) &&
320: (cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-Q") < 0))
321: return (-1);
322:
323: if (cvs_nolog && (cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-l") < 0))
324: return (-1);
325: if (cvs_readonly && (cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-r") < 0))
326: return (-1);
327: if (cvs_trace && (cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-t") < 0))
328: return (-1);
1.13 jfb 329:
1.22 jfb 330: /* now send the CVSROOT to the server unless it's an init */
331: if ((cvs_cmdop != CVS_OP_INIT) &&
332: (cvs_sendreq(root, CVS_REQ_ROOT, root->cr_dir) < 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: {
547: int fd;
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: }
1.1 jfb 572: snprintf(buf, sizeof(buf), "%lld\n", st.st_size);
1.38 jfb 573: if (cvs_sendln(root, buf) < 0) {
574: (void)close(fd);
575: return (-1);
576: }
1.1 jfb 577:
578: while ((ret = read(fd, buf, sizeof(buf))) != 0) {
579: if (ret == -1) {
1.24 jfb 580: (void)close(fd);
1.1 jfb 581: cvs_log(LP_ERRNO, "failed to read file `%s'", path);
582: return (-1);
583: }
584:
1.38 jfb 585: if (cvs_sendraw(root, buf, (size_t)ret) < 0) {
586: (void)close(fd);
587: return (-1);
588: }
1.1 jfb 589: }
590:
591: (void)close(fd);
592: return (0);
593: }
594:
595:
596: /*
597: * cvs_recvfile()
598: *
599: * Receive the mode and size of a file followed the file's contents and
600: * create or update the file whose path is <path> with the received
601: * information.
602: */
1.14 jfb 603: BUF*
604: cvs_recvfile(struct cvsroot *root, mode_t *mode)
1.1 jfb 605: {
606: size_t len;
607: ssize_t ret;
608: off_t fsz, cnt;
609: char buf[4096], *ep;
1.14 jfb 610: BUF *fbuf;
611:
612: fbuf = cvs_buf_alloc(sizeof(buf), BUF_AUTOEXT);
613: if (fbuf == NULL)
614: return (NULL);
1.1 jfb 615:
1.13 jfb 616: if ((cvs_getln(root, buf, sizeof(buf)) < 0) ||
1.14 jfb 617: (cvs_strtomode(buf, mode) < 0)) {
1.44 ! tedu 618: cvs_buf_free(fbuf);
1.14 jfb 619: return (NULL);
1.1 jfb 620: }
621:
1.13 jfb 622: cvs_getln(root, buf, sizeof(buf));
1.1 jfb 623:
624: fsz = (off_t)strtol(buf, &ep, 10);
625: if (*ep != '\0') {
626: cvs_log(LP_ERR, "parse error in file size transmission");
1.44 ! tedu 627: cvs_buf_free(fbuf);
1.14 jfb 628: return (NULL);
1.1 jfb 629: }
630:
631: cnt = 0;
632: do {
633: len = MIN(sizeof(buf), (size_t)(fsz - cnt));
1.6 jfb 634: if (len == 0)
635: break;
1.13 jfb 636: ret = cvs_recvraw(root, buf, len);
1.1 jfb 637: if (ret == -1) {
1.14 jfb 638: cvs_buf_free(fbuf);
639: return (NULL);
1.1 jfb 640: }
641:
1.14 jfb 642: if (cvs_buf_append(fbuf, buf, (size_t)ret) == -1) {
643: cvs_log(LP_ERR,
644: "failed to append received file data");
645: cvs_buf_free(fbuf);
646: return (NULL);
1.1 jfb 647: }
648:
649: cnt += (off_t)ret;
650: } while (cnt < fsz);
651:
1.14 jfb 652: return (fbuf);
1.1 jfb 653: }
1.12 jfb 654:
655:
656: /*
657: * cvs_sendreq()
658: *
659: * Send a request to the server of type <rid>, with optional arguments
660: * contained in <arg>, which should not be terminated by a newline.
661: * Returns 0 on success, or -1 on failure.
662: */
663: int
1.13 jfb 664: cvs_sendreq(struct cvsroot *root, u_int rid, const char *arg)
1.12 jfb 665: {
666: int ret;
1.13 jfb 667: struct cvs_req *req;
1.12 jfb 668:
669: if (root->cr_srvin == NULL) {
1.36 jfb 670: cvs_log(LP_ERR, "cannot send request %u: Not connected", rid);
1.12 jfb 671: return (-1);
672: }
673:
1.13 jfb 674: req = cvs_req_getbyid(rid);
675: if (req == NULL) {
1.12 jfb 676: cvs_log(LP_ERR, "unsupported request type %u", rid);
677: return (-1);
678: }
679:
1.18 jfb 680: /* is this request supported by the server? */
681: if (!CVS_GETVR(root, req->req_id)) {
1.25 jfb 682: cvs_log(LP_WARN, "remote end does not support request `%s'",
1.18 jfb 683: req->req_str);
684: return (-1);
685: }
686:
1.13 jfb 687: snprintf(cvs_proto_buf, sizeof(cvs_proto_buf), "%s%s%s\n",
688: req->req_str, (arg == NULL) ? "" : " ", (arg == NULL) ? "" : arg);
1.12 jfb 689:
690: if (cvs_server_inlog != NULL)
1.13 jfb 691: fputs(cvs_proto_buf, cvs_server_inlog);
1.12 jfb 692:
1.13 jfb 693: ret = fputs(cvs_proto_buf, root->cr_srvin);
1.12 jfb 694: if (ret == EOF) {
695: cvs_log(LP_ERRNO, "failed to send request to server");
696: return (-1);
697: }
1.17 jfb 698:
699: if (rid == CVS_REQ_VERSION)
700: cvs_version_sent = 1;
1.12 jfb 701:
1.13 jfb 702: if (req->req_flags & CVS_REQF_RESP)
1.12 jfb 703: ret = cvs_getresp(root);
704:
1.13 jfb 705: return (ret);
1.12 jfb 706: }
707:
708:
709: /*
710: * cvs_getresp()
711: *
712: * Get a response from the server. This call will actually read and handle
713: * responses from the server until one of the response handlers returns
1.37 david 714: * non-zero (either an error occurred or the end of the response was reached).
1.12 jfb 715: * Returns the number of handled commands on success, or -1 on failure.
716: */
717: int
1.13 jfb 718: cvs_getresp(struct cvsroot *root)
1.12 jfb 719: {
1.13 jfb 720: int nbcmd, ret;
721: size_t len;
1.12 jfb 722:
723: nbcmd = 0;
724:
725: do {
726: /* wait for incoming data */
1.13 jfb 727: if (fgets(cvs_proto_buf, sizeof(cvs_proto_buf),
1.12 jfb 728: root->cr_srvout) == NULL) {
729: if (feof(root->cr_srvout))
730: return (0);
731: cvs_log(LP_ERRNO,
732: "failed to read response from server");
733: return (-1);
734: }
735:
736: if (cvs_server_outlog != NULL)
1.13 jfb 737: fputs(cvs_proto_buf, cvs_server_outlog);
1.12 jfb 738:
1.13 jfb 739: if ((len = strlen(cvs_proto_buf)) != 0) {
1.42 joris 740: /* if len - 1 != '\n' the line is truncated */
1.43 joris 741: if (cvs_proto_buf[len - 1] == '\n')
1.13 jfb 742: cvs_proto_buf[--len] = '\0';
1.12 jfb 743: }
744:
1.13 jfb 745: ret = cvs_resp_handle(root, cvs_proto_buf);
1.12 jfb 746: nbcmd++;
747: } while (ret == 0);
748:
749: if (ret > 0)
750: ret = nbcmd;
751: return (ret);
752: }
753:
754:
755: /*
1.13 jfb 756: * cvs_getln()
757: *
1.18 jfb 758: * Get a line from the remote end and store it in <lbuf>. The terminating
1.13 jfb 759: * newline character is stripped from the result.
760: */
761: int
762: cvs_getln(struct cvsroot *root, char *lbuf, size_t len)
763: {
764: size_t rlen;
1.18 jfb 765: FILE *in;
1.13 jfb 766:
1.18 jfb 767: if (cvs_cmdop == CVS_OP_SERVER)
768: in = stdin;
769: else
770: in = root->cr_srvout;
771:
772: if (fgets(lbuf, len, in) == NULL) {
773: if (ferror(in)) {
774: cvs_log(LP_ERRNO, "failed to read line");
1.13 jfb 775: return (-1);
776: }
777:
1.18 jfb 778: if (feof(in))
1.13 jfb 779: *lbuf = '\0';
780: }
781:
782: if (cvs_server_outlog != NULL)
783: fputs(lbuf, cvs_server_outlog);
784:
785: rlen = strlen(lbuf);
786: if ((rlen > 0) && (lbuf[rlen - 1] == '\n'))
787: lbuf[--rlen] = '\0';
788:
789: return (0);
790: }
791:
1.19 jfb 792:
1.13 jfb 793: /*
1.12 jfb 794: * cvs_sendresp()
795: *
1.19 jfb 796: * Send a response of type <rid> to the client, with optional arguments
1.12 jfb 797: * contained in <arg>, which should not be terminated by a newline.
798: * Returns 0 on success, or -1 on failure.
799: */
800: int
801: cvs_sendresp(u_int rid, const char *arg)
802: {
803: int ret;
1.19 jfb 804: struct cvs_resp *resp;
1.12 jfb 805:
806: resp = cvs_resp_getbyid(rid);
1.13 jfb 807: if (resp == NULL) {
1.12 jfb 808: cvs_log(LP_ERR, "unsupported response type %u", rid);
809: return (-1);
810: }
811:
1.19 jfb 812: ret = fputs(resp->resp_str, stdout);
1.12 jfb 813: if (ret == EOF) {
814: cvs_log(LP_ERRNO, "failed to send response to client");
1.30 deraadt 815: } else {
1.19 jfb 816: if (arg != NULL) {
817: putc(' ', stdout);
818: fputs(arg, stdout);
819: }
1.12 jfb 820: putc('\n', stdout);
821: }
822: return (0);
823: }
824:
825:
1.19 jfb 826: #ifdef notyet
1.12 jfb 827: /*
828: * cvs_getreq()
829: *
830: * Get a request from the client.
831: */
832: int
833: cvs_getreq(void)
834: {
835: int nbcmd;
836:
837: nbcmd = 0;
838:
839: do {
840: /* wait for incoming data */
1.13 jfb 841: if (fgets(cvs_proto_buf, sizeof(cvs_proto_buf),
1.12 jfb 842: stdin) == NULL) {
843: if (feof(stdin))
844: return (0);
845: cvs_log(LP_ERRNO,
846: "failed to read request from client");
847: return (-1);
848: }
849:
1.13 jfb 850: if ((len = strlen(cvs_proto_buf)) != 0) {
851: if (cvs_proto_buf[len - 1] != '\n') {
1.12 jfb 852: /* truncated line */
1.30 deraadt 853: } else
1.13 jfb 854: cvs_proto_buf[--len] = '\0';
1.12 jfb 855: }
856:
1.13 jfb 857: ret = cvs_resp_handle(cvs_proto_buf);
1.12 jfb 858: } while (ret == 0);
859: }
860: #endif
861:
862:
863: /*
864: * cvs_sendln()
865: *
1.18 jfb 866: * Send a single line <line> string to the remote end. The line is sent as is,
1.12 jfb 867: * without any modifications.
868: * Returns 0 on success, or -1 on failure.
869: */
870: int
871: cvs_sendln(struct cvsroot *root, const char *line)
872: {
873: int nl;
874: size_t len;
1.18 jfb 875: FILE *out;
876:
877: if (cvs_cmdop == CVS_OP_SERVER)
878: out = stdout;
879: else
880: out = root->cr_srvin;
1.12 jfb 881:
882: nl = 0;
883: len = strlen(line);
884:
885: if ((len > 0) && (line[len - 1] != '\n'))
886: nl = 1;
887:
888: if (cvs_server_inlog != NULL) {
889: fputs(line, cvs_server_inlog);
890: if (nl)
891: fputc('\n', cvs_server_inlog);
892: }
1.18 jfb 893: fputs(line, out);
1.12 jfb 894: if (nl)
1.18 jfb 895: fputc('\n', out);
1.12 jfb 896: return (0);
897: }
898:
899:
900: /*
1.13 jfb 901: * cvs_sendraw()
1.12 jfb 902: *
903: * Send the first <len> bytes from the buffer <src> to the server.
904: */
905: int
1.13 jfb 906: cvs_sendraw(struct cvsroot *root, const void *src, size_t len)
1.12 jfb 907: {
1.18 jfb 908: FILE *out;
909:
910: if (cvs_cmdop == CVS_OP_SERVER)
911: out = stdout;
912: else
913: out = root->cr_srvin;
914:
1.12 jfb 915: if (cvs_server_inlog != NULL)
916: fwrite(src, sizeof(char), len, cvs_server_inlog);
1.18 jfb 917: if (fwrite(src, sizeof(char), len, out) < len) {
1.38 jfb 918: cvs_log(LP_ERR, "failed to send data");
1.12 jfb 919: return (-1);
920: }
921:
922: return (0);
923: }
924:
925:
926: /*
1.13 jfb 927: * cvs_recvraw()
1.12 jfb 928: *
929: * Receive the first <len> bytes from the buffer <src> to the server.
930: */
931: ssize_t
1.13 jfb 932: cvs_recvraw(struct cvsroot *root, void *dst, size_t len)
1.12 jfb 933: {
934: size_t ret;
1.18 jfb 935: FILE *in;
936:
937: if (cvs_cmdop == CVS_OP_SERVER)
938: in = stdin;
939: else
940: in = root->cr_srvout;
1.12 jfb 941:
1.18 jfb 942: ret = fread(dst, sizeof(char), len, in);
1.12 jfb 943: if (ret == 0)
944: return (-1);
945: if (cvs_server_outlog != NULL)
946: fwrite(dst, sizeof(char), len, cvs_server_outlog);
947: return (ssize_t)ret;
948: }
949:
950:
951: /*
1.13 jfb 952: * cvs_senddir()
1.12 jfb 953: *
1.32 jfb 954: * Send a `Directory' request along with the 2 paths that follow it. If
955: * the directory info to be sent is the same as the last info sent, the
956: * call does nothing and simply returns without an error.
1.12 jfb 957: */
958: int
1.31 tedu 959: cvs_senddir(struct cvsroot *root, CVSFILE *dir)
1.12 jfb 960: {
1.28 jfb 961: char lbuf[MAXPATHLEN], rbuf[MAXPATHLEN];
1.12 jfb 962:
1.32 jfb 963: cvs_file_getpath(dir, lbuf, sizeof(lbuf));
964: if (strcmp(lbuf, cvs_lastdir) == 0)
965: return (0);
966:
1.13 jfb 967: if (dir->cf_ddat->cd_repo == NULL)
1.28 jfb 968: strlcpy(rbuf, root->cr_dir, sizeof(rbuf));
1.13 jfb 969: else
1.28 jfb 970: snprintf(rbuf, sizeof(rbuf), "%s/%s", root->cr_dir,
1.13 jfb 971: dir->cf_ddat->cd_repo);
1.12 jfb 972:
1.28 jfb 973:
974: if ((cvs_sendreq(root, CVS_REQ_DIRECTORY, lbuf) < 0) ||
975: (cvs_sendln(root, rbuf) < 0))
1.12 jfb 976: return (-1);
1.32 jfb 977:
978: strlcpy(cvs_lastdir, lbuf, sizeof(cvs_lastdir));
1.12 jfb 979:
980: return (0);
981: }
982:
983:
984: /*
1.13 jfb 985: * cvs_sendarg()
1.12 jfb 986: *
987: * Send the argument <arg> to the server. The argument <append> is used to
988: * determine if the argument should be simply appended to the last argument
989: * sent or if it should be created as a new argument (0).
990: */
991: int
1.13 jfb 992: cvs_sendarg(struct cvsroot *root, const char *arg, int append)
1.12 jfb 993: {
1.13 jfb 994: return cvs_sendreq(root, ((append == 0) ?
995: CVS_REQ_ARGUMENT : CVS_REQ_ARGUMENTX), arg);
1.12 jfb 996: }
997:
998:
999: /*
1.13 jfb 1000: * cvs_sendentry()
1.12 jfb 1001: *
1002: * Send an `Entry' request to the server along with the mandatory fields from
1003: * the CVS entry <ent> (which are the name and revision).
1004: */
1005: int
1.13 jfb 1006: cvs_sendentry(struct cvsroot *root, const struct cvs_ent *ent)
1.12 jfb 1007: {
1008: char ebuf[128], numbuf[64];
1009:
1010: snprintf(ebuf, sizeof(ebuf), "/%s/%s///", ent->ce_name,
1011: rcsnum_tostr(ent->ce_rev, numbuf, sizeof(numbuf)));
1012:
1.13 jfb 1013: return cvs_sendreq(root, CVS_REQ_ENTRY, ebuf);
1.12 jfb 1014: }
1015:
1016:
1017: /*
1.13 jfb 1018: * cvs_initlog()
1.12 jfb 1019: *
1020: * Initialize protocol logging if the CVS_CLIENT_LOG environment variable is
1021: * set. In this case, the variable's value is used as a path to which the
1022: * appropriate suffix is added (".in" for server input and ".out" for server
1023: * output.
1024: * Returns 0 on success, or -1 on failure.
1025: */
1026: static int
1.13 jfb 1027: cvs_initlog(void)
1.12 jfb 1028: {
1029: char *env, fpath[MAXPATHLEN];
1030:
1.13 jfb 1031: /* avoid doing it more than once */
1032: if (cvs_server_logon)
1033: return (0);
1034:
1.12 jfb 1035: env = getenv("CVS_CLIENT_LOG");
1036: if (env == NULL)
1037: return (0);
1038:
1039: strlcpy(fpath, env, sizeof(fpath));
1040: strlcat(fpath, ".in", sizeof(fpath));
1041: cvs_server_inlog = fopen(fpath, "w");
1042: if (cvs_server_inlog == NULL) {
1043: cvs_log(LP_ERRNO, "failed to open server input log `%s'",
1044: fpath);
1045: return (-1);
1046: }
1047:
1048: strlcpy(fpath, env, sizeof(fpath));
1049: strlcat(fpath, ".out", sizeof(fpath));
1050: cvs_server_outlog = fopen(fpath, "w");
1051: if (cvs_server_outlog == NULL) {
1052: cvs_log(LP_ERRNO, "failed to open server output log `%s'",
1053: fpath);
1054: return (-1);
1055: }
1056:
1057: /* make the streams line-buffered */
1058: setvbuf(cvs_server_inlog, NULL, _IOLBF, 0);
1059: setvbuf(cvs_server_outlog, NULL, _IOLBF, 0);
1060:
1.13 jfb 1061: cvs_server_logon = 1;
1.12 jfb 1062:
1063: return (0);
1064: }
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