Annotation of src/usr.bin/cvs/proto.c, Revision 1.69
1.69 ! moritz 1: /* $OpenBSD: proto.c,v 1.68 2005/07/25 12:13:08 xsa Exp $ */
1.1 jfb 2: /*
3: * Copyright (c) 2004 Jean-Francois Brousseau <jfb@openbsd.org>
4: * All rights reserved.
5: *
6: * Redistribution and use in source and binary forms, with or without
7: * modification, are permitted provided that the following conditions
8: * are met:
9: *
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. The name of the author may not be used to endorse or promote products
13: * derived from this software without specific prior written permission.
14: *
15: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
16: * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
17: * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
18: * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
21: * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
22: * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
23: * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
24: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25: */
26: /*
27: * CVS client/server protocol
28: * ==========================
29: *
30: * The following code implements the CVS client/server protocol, which is
31: * documented at the following URL:
32: * http://www.loria.fr/~molli/cvs/doc/cvsclient_toc.html
33: *
34: * The protocol is split up into two parts; the first part is the client side
35: * of things and is composed of all the response handlers, which are all named
36: * with a prefix of "cvs_resp_". The second part is the set of request
37: * handlers used by the server. These handlers process the request and
38: * generate the appropriate response to send back. The prefix for request
39: * handlers is "cvs_req_".
40: *
41: */
42:
43: #include <sys/types.h>
44: #include <sys/stat.h>
45:
1.56 xsa 46: #include <errno.h>
1.1 jfb 47: #include <fcntl.h>
1.56 xsa 48: #include <libgen.h>
49: #include <pwd.h>
1.1 jfb 50: #include <stdio.h>
51: #include <stdlib.h>
1.56 xsa 52: #include <string.h>
1.1 jfb 53: #include <unistd.h>
54:
55: #include "cvs.h"
56: #include "log.h"
1.13 jfb 57: #include "proto.h"
1.1 jfb 58:
59:
1.11 jfb 60: /* request flags */
1.68 xsa 61: #define CVS_REQF_RESP 0x01
1.11 jfb 62:
63:
1.68 xsa 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" },
1.63 joris 133: { CVS_RESP_RMENTRY, "Remove-entry" },
1.18 jfb 134: { CVS_RESP_CKSUM, "Checksum" },
135: { CVS_RESP_CLRSTATDIR, "Clear-static-directory" },
136: { CVS_RESP_SETSTATDIR, "Set-static-directory" },
137: { CVS_RESP_NEWENTRY, "New-entry" },
138: { CVS_RESP_CHECKEDIN, "Checked-in" },
139: { CVS_RESP_MODE, "Mode" },
140: { CVS_RESP_MODTIME, "Mod-time" },
141: { CVS_RESP_MODXPAND, "Module-expansion" },
142: { CVS_RESP_SETSTICKY, "Set-sticky" },
143: { CVS_RESP_CLRSTICKY, "Clear-sticky" },
144: { CVS_RESP_RCSDIFF, "Rcs-diff" },
145: { CVS_RESP_TEMPLATE, "Template" },
1.34 jfb 146: { CVS_RESP_COPYFILE, "Copy-file" },
1.1 jfb 147: };
148:
1.68 xsa 149: #define CVS_NBREQ (sizeof(cvs_requests)/sizeof(cvs_requests[0]))
150: #define CVS_NBRESP (sizeof(cvs_responses)/sizeof(cvs_responses[0]))
1.17 jfb 151:
152: /* hack to receive the remote version without outputting it */
1.18 jfb 153: u_int cvs_version_sent = 0;
1.17 jfb 154:
1.13 jfb 155: static char cvs_proto_buf[4096];
156:
157: /*
1.37 david 158: * Output files for protocol logging when the CVS_CLIENT_LOG environment
1.13 jfb 159: * variable is set.
160: */
161: static int cvs_server_logon = 0;
162: static FILE *cvs_server_inlog = NULL;
163: static FILE *cvs_server_outlog = NULL;
164:
1.28 jfb 165: static pid_t cvs_subproc_pid;
166:
1.32 jfb 167: /* last directory sent with cvs_senddir() */
168: static char cvs_lastdir[MAXPATHLEN] = "";
169:
1.13 jfb 170:
171: /*
172: * cvs_connect()
173: *
174: * Open a client connection to the cvs server whose address is given in
175: * the <root> variable. The method used to connect depends on the
176: * setting of the CVS_RSH variable.
1.17 jfb 177: * Once the connection has been established, we first send the list of
178: * responses we support and request the list of supported requests from the
179: * server. Then, a version request is sent and various global flags are sent.
1.13 jfb 180: * Returns 0 on success, or -1 on failure.
181: */
182: int
183: cvs_connect(struct cvsroot *root)
184: {
1.20 jfb 185: int argc, infd[2], outfd[2], errfd[2];
1.13 jfb 186: char *argv[16], *cvs_server_cmd, *vresp;
187:
1.36 jfb 188: if (root->cr_method == CVS_METHOD_PSERVER) {
189: cvs_log(LP_ERR, "no pserver support due to security issues");
190: return (-1);
191: } else if ((root->cr_method == CVS_METHOD_KSERVER) ||
192: (root->cr_method == CVS_METHOD_GSERVER) ||
193: (root->cr_method == CVS_METHOD_EXT) ||
194: (root->cr_method == CVS_METHOD_FORK)) {
195: cvs_log(LP_ERR, "connection method not supported yet");
196: return (-1);
197: }
1.33 jfb 198:
199: if (root->cr_flags & CVS_ROOT_CONNECTED) {
200: cvs_log(LP_NOTICE, "already connected to CVSROOT");
201: return (0);
202: }
203:
1.13 jfb 204: if (pipe(infd) == -1) {
205: cvs_log(LP_ERRNO,
206: "failed to create input pipe for client connection");
207: return (-1);
208: }
209:
210: if (pipe(outfd) == -1) {
211: cvs_log(LP_ERRNO,
212: "failed to create output pipe for client connection");
213: (void)close(infd[0]);
214: (void)close(infd[1]);
215: return (-1);
216: }
217:
1.20 jfb 218: if (pipe(errfd) == -1) {
219: cvs_log(LP_ERRNO,
220: "failed to create error pipe for client connection");
221: (void)close(infd[0]);
222: (void)close(infd[1]);
223: (void)close(outfd[0]);
224: (void)close(outfd[1]);
225: return (-1);
226: }
227:
1.28 jfb 228: cvs_subproc_pid = fork();
229: if (cvs_subproc_pid == -1) {
1.13 jfb 230: cvs_log(LP_ERRNO, "failed to fork for cvs server connection");
231: return (-1);
1.30 deraadt 232: } else if (cvs_subproc_pid == 0) {
1.13 jfb 233: if ((dup2(infd[0], STDIN_FILENO) == -1) ||
1.23 jfb 234: (dup2(outfd[1], STDOUT_FILENO) == -1)) {
1.13 jfb 235: cvs_log(LP_ERRNO,
236: "failed to setup standard streams for cvs server");
237: return (-1);
238: }
239: (void)close(infd[1]);
240: (void)close(outfd[0]);
1.20 jfb 241: (void)close(errfd[0]);
1.13 jfb 242:
243: argc = 0;
244: argv[argc++] = cvs_rsh;
245:
246: if (root->cr_user != NULL) {
247: argv[argc++] = "-l";
248: argv[argc++] = root->cr_user;
249: }
250:
251: cvs_server_cmd = getenv("CVS_SERVER");
252: if (cvs_server_cmd == NULL)
1.20 jfb 253: cvs_server_cmd = CVS_SERVER_DEFAULT;
1.13 jfb 254:
255: argv[argc++] = root->cr_host;
256: argv[argc++] = cvs_server_cmd;
257: argv[argc++] = "server";
258: argv[argc] = NULL;
259:
260: execvp(argv[0], argv);
261: cvs_log(LP_ERRNO, "failed to exec");
1.46 xsa 262: exit(1);
1.13 jfb 263: }
264:
265: /* we are the parent */
266: (void)close(infd[0]);
267: (void)close(outfd[1]);
1.20 jfb 268: (void)close(errfd[1]);
1.13 jfb 269:
270: root->cr_srvin = fdopen(infd[1], "w");
271: if (root->cr_srvin == NULL) {
272: cvs_log(LP_ERRNO, "failed to create pipe stream");
273: return (-1);
274: }
275:
276: root->cr_srvout = fdopen(outfd[0], "r");
277: if (root->cr_srvout == NULL) {
278: cvs_log(LP_ERRNO, "failed to create pipe stream");
1.20 jfb 279: return (-1);
280: }
281:
1.13 jfb 282: /* make the streams line-buffered */
283: (void)setvbuf(root->cr_srvin, NULL, _IOLBF, 0);
284: (void)setvbuf(root->cr_srvout, NULL, _IOLBF, 0);
285:
286: cvs_initlog();
287:
288: /*
289: * Send the server the list of valid responses, then ask for valid
290: * requests.
291: */
292:
1.40 jfb 293: if ((vresp = cvs_resp_getvalid()) == NULL) {
1.13 jfb 294: cvs_log(LP_ERR, "can't generate list of valid responses");
295: return (-1);
296: }
297:
298: if (cvs_sendreq(root, CVS_REQ_VALIDRESP, vresp) < 0) {
1.40 jfb 299: cvs_log(LP_ERR, "failed to get valid responses");
300: free(vresp);
301: return (-1);
1.13 jfb 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:
1.62 xsa 310: /* send the CVSROOT to the server */
311: if (cvs_sendreq(root, CVS_REQ_ROOT, root->cr_dir) < 0)
1.54 joris 312: return (-1);
313:
1.40 jfb 314: /* don't fail if this request doesn't work */
1.17 jfb 315: if (cvs_sendreq(root, CVS_REQ_VERSION, NULL) < 0)
1.40 jfb 316: cvs_log(LP_WARN, "failed to get remote version");
1.17 jfb 317:
1.13 jfb 318: /* now share our global options with the server */
1.61 joris 319: if ((verbosity <= 1) &&
1.40 jfb 320: (cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-q") < 0))
321: return (-1);
1.61 joris 322: if ((verbosity == 0) &&
1.40 jfb 323: (cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-Q") < 0))
324: return (-1);
325:
1.66 xsa 326: if ((cvs_noexec == 1) &&
327: (cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-n") < 0))
1.53 jfb 328: return (-1);
1.66 xsa 329: if ((cvs_nolog == 1) &&
330: (cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-l") < 0))
1.40 jfb 331: return (-1);
1.66 xsa 332: if ((cvs_readonly == 1) &&
333: (cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-r") < 0))
1.40 jfb 334: return (-1);
1.66 xsa 335: if ((cvs_trace == 1) &&
336: (cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-t") < 0))
1.13 jfb 337: return (-1);
338:
339: /* not sure why, but we have to send this */
340: if (cvs_sendreq(root, CVS_REQ_USEUNCHANGED, NULL) < 0)
341: return (-1);
342:
343: cvs_log(LP_DEBUG, "connected to %s", root->cr_host);
344:
1.33 jfb 345: root->cr_flags |= CVS_ROOT_CONNECTED;
346:
1.13 jfb 347: return (0);
348: }
349:
350:
351: /*
352: * cvs_disconnect()
353: *
354: * Disconnect from the cvs server.
355: */
356: void
357: cvs_disconnect(struct cvsroot *root)
358: {
1.33 jfb 359: if (!(root->cr_flags & CVS_ROOT_CONNECTED))
360: return;
361:
1.13 jfb 362: cvs_log(LP_DEBUG, "closing connection to %s", root->cr_host);
363: if (root->cr_srvin != NULL) {
364: (void)fclose(root->cr_srvin);
365: root->cr_srvin = NULL;
366: }
367: if (root->cr_srvout != NULL) {
368: (void)fclose(root->cr_srvout);
369: root->cr_srvout = NULL;
370: }
1.33 jfb 371:
372: root->cr_flags &= ~CVS_ROOT_CONNECTED;
1.13 jfb 373: }
374:
1.1 jfb 375:
376: /*
377: * cvs_req_getbyid()
378: *
379: */
1.13 jfb 380: struct cvs_req*
1.1 jfb 381: cvs_req_getbyid(int reqid)
382: {
383: u_int i;
384:
385: for (i = 0; i < CVS_NBREQ; i++)
386: if (cvs_requests[i].req_id == reqid)
1.13 jfb 387: return &(cvs_requests[i]);
1.31 tedu 388:
1.1 jfb 389: return (NULL);
390: }
391:
392:
393: /*
394: * cvs_req_getbyname()
395: */
1.13 jfb 396: struct cvs_req*
1.1 jfb 397: cvs_req_getbyname(const char *rname)
398: {
399: u_int i;
400:
401: for (i = 0; i < CVS_NBREQ; i++)
402: if (strcmp(cvs_requests[i].req_str, rname) == 0)
1.13 jfb 403: return &(cvs_requests[i]);
1.1 jfb 404:
1.13 jfb 405: return (NULL);
1.1 jfb 406: }
407:
408:
409: /*
410: * cvs_req_getvalid()
411: *
412: * Build a space-separated list of all the requests that this protocol
413: * implementation supports.
414: */
1.67 xsa 415: char *
1.1 jfb 416: cvs_req_getvalid(void)
417: {
418: u_int i;
419: size_t len;
420: char *vrstr;
421: BUF *buf;
422:
423: buf = cvs_buf_alloc(512, BUF_AUTOEXT);
424: if (buf == NULL)
425: return (NULL);
426:
427: cvs_buf_set(buf, cvs_requests[0].req_str,
428: strlen(cvs_requests[0].req_str), 0);
429:
430: for (i = 1; i < CVS_NBREQ; i++) {
431: if ((cvs_buf_putc(buf, ' ') < 0) ||
432: (cvs_buf_append(buf, cvs_requests[i].req_str,
433: strlen(cvs_requests[i].req_str)) < 0)) {
434: cvs_buf_free(buf);
435: return (NULL);
436: }
437: }
438:
439: /* NUL-terminate */
440: if (cvs_buf_putc(buf, '\0') < 0) {
441: cvs_buf_free(buf);
442: return (NULL);
443: }
444:
445: len = cvs_buf_size(buf);
446: vrstr = (char *)malloc(len);
1.27 jfb 447: if (vrstr == NULL) {
448: cvs_buf_free(buf);
449: return (NULL);
450: }
1.1 jfb 451:
452: cvs_buf_copy(buf, 0, vrstr, len);
453: cvs_buf_free(buf);
454:
455: return (vrstr);
456: }
457:
458:
459: /*
460: * cvs_resp_getbyid()
461: *
462: */
1.13 jfb 463: struct cvs_resp*
1.1 jfb 464: cvs_resp_getbyid(int respid)
465: {
466: u_int i;
467:
1.44 tedu 468: for (i = 0; i < CVS_NBRESP; i++)
1.13 jfb 469: if (cvs_responses[i].resp_id == (u_int)respid)
470: return &(cvs_responses[i]);
1.31 tedu 471:
1.1 jfb 472: return (NULL);
473: }
474:
475:
476: /*
477: * cvs_resp_getbyname()
478: */
1.67 xsa 479: struct cvs_resp *
1.1 jfb 480: cvs_resp_getbyname(const char *rname)
481: {
482: u_int i;
483:
1.44 tedu 484: for (i = 0; i < CVS_NBRESP; i++)
1.1 jfb 485: if (strcmp(cvs_responses[i].resp_str, rname) == 0)
1.13 jfb 486: return &(cvs_responses[i]);
1.1 jfb 487:
1.13 jfb 488: return (NULL);
1.1 jfb 489: }
490:
491:
492: /*
493: * cvs_resp_getvalid()
494: *
495: * Build a space-separated list of all the responses that this protocol
496: * implementation supports.
497: */
1.67 xsa 498: char *
1.1 jfb 499: cvs_resp_getvalid(void)
500: {
501: u_int i;
502: size_t len;
503: char *vrstr;
504: BUF *buf;
505:
506: buf = cvs_buf_alloc(512, BUF_AUTOEXT);
507: if (buf == NULL)
508: return (NULL);
509:
510: cvs_buf_set(buf, cvs_responses[0].resp_str,
511: strlen(cvs_responses[0].resp_str), 0);
512:
513: for (i = 1; i < CVS_NBRESP; i++) {
514: if ((cvs_buf_putc(buf, ' ') < 0) ||
515: (cvs_buf_append(buf, cvs_responses[i].resp_str,
516: strlen(cvs_responses[i].resp_str)) < 0)) {
517: cvs_buf_free(buf);
518: return (NULL);
519: }
520: }
521:
522: /* NUL-terminate */
523: if (cvs_buf_putc(buf, '\0') < 0) {
524: cvs_buf_free(buf);
525: return (NULL);
526: }
527:
528: len = cvs_buf_size(buf);
529: vrstr = (char *)malloc(len);
1.27 jfb 530: if (vrstr == NULL) {
531: cvs_buf_free(buf);
532: return (NULL);
533: }
1.1 jfb 534:
535: cvs_buf_copy(buf, 0, vrstr, len);
536: cvs_buf_free(buf);
537:
538: return (vrstr);
539: }
540:
541:
542: /*
543: * cvs_sendfile()
544: *
545: * Send the mode and size of a file followed by the file's contents.
546: * Returns 0 on success, or -1 on failure.
547: */
548: int
1.13 jfb 549: cvs_sendfile(struct cvsroot *root, const char *path)
1.1 jfb 550: {
1.51 xsa 551: int fd, l;
1.1 jfb 552: ssize_t ret;
553: char buf[4096];
554: struct stat st;
555:
1.38 jfb 556: cvs_log(LP_TRACE, "Sending file `%s' to server", basename(path));
557:
1.1 jfb 558: if (stat(path, &st) == -1) {
559: cvs_log(LP_ERRNO, "failed to stat `%s'", path);
560: return (-1);
561: }
562:
1.24 jfb 563: if (cvs_modetostr(st.st_mode, buf, sizeof(buf)) < 0)
564: return (-1);
565:
1.1 jfb 566: fd = open(path, O_RDONLY, 0);
567: if (fd == -1) {
1.38 jfb 568: cvs_log(LP_ERRNO, "failed to open `%s'", path);
1.1 jfb 569: return (-1);
570: }
571:
1.38 jfb 572: if (cvs_sendln(root, buf) < 0) {
573: (void)close(fd);
574: return (-1);
575: }
1.51 xsa 576: l = snprintf(buf, sizeof(buf), "%lld\n", st.st_size);
577: if (l == -1 || l >= (int)sizeof(buf))
578: return (-1);
579:
1.38 jfb 580: if (cvs_sendln(root, buf) < 0) {
581: (void)close(fd);
582: return (-1);
583: }
1.1 jfb 584:
585: while ((ret = read(fd, buf, sizeof(buf))) != 0) {
586: if (ret == -1) {
1.24 jfb 587: (void)close(fd);
1.1 jfb 588: cvs_log(LP_ERRNO, "failed to read file `%s'", path);
589: return (-1);
590: }
591:
1.38 jfb 592: if (cvs_sendraw(root, buf, (size_t)ret) < 0) {
593: (void)close(fd);
594: return (-1);
595: }
1.1 jfb 596: }
597:
598: (void)close(fd);
599: return (0);
600: }
601:
602:
603: /*
604: * cvs_recvfile()
605: *
606: * Receive the mode and size of a file followed the file's contents and
607: * create or update the file whose path is <path> with the received
608: * information.
609: */
1.14 jfb 610: BUF*
611: cvs_recvfile(struct cvsroot *root, mode_t *mode)
1.1 jfb 612: {
613: size_t len;
614: ssize_t ret;
615: off_t fsz, cnt;
616: char buf[4096], *ep;
1.14 jfb 617: BUF *fbuf;
618:
619: fbuf = cvs_buf_alloc(sizeof(buf), BUF_AUTOEXT);
620: if (fbuf == NULL)
621: return (NULL);
1.1 jfb 622:
1.13 jfb 623: if ((cvs_getln(root, buf, sizeof(buf)) < 0) ||
1.14 jfb 624: (cvs_strtomode(buf, mode) < 0)) {
1.44 tedu 625: cvs_buf_free(fbuf);
1.14 jfb 626: return (NULL);
1.1 jfb 627: }
628:
1.50 joris 629: if (cvs_getln(root, buf, sizeof(buf)) < 0) {
630: cvs_buf_free(fbuf);
631: return (NULL);
632: }
1.1 jfb 633:
634: fsz = (off_t)strtol(buf, &ep, 10);
635: if (*ep != '\0') {
636: cvs_log(LP_ERR, "parse error in file size transmission");
1.44 tedu 637: cvs_buf_free(fbuf);
1.14 jfb 638: return (NULL);
1.1 jfb 639: }
640:
641: cnt = 0;
642: do {
643: len = MIN(sizeof(buf), (size_t)(fsz - cnt));
1.6 jfb 644: if (len == 0)
645: break;
1.13 jfb 646: ret = cvs_recvraw(root, buf, len);
1.1 jfb 647: if (ret == -1) {
1.14 jfb 648: cvs_buf_free(fbuf);
649: return (NULL);
1.1 jfb 650: }
651:
1.14 jfb 652: if (cvs_buf_append(fbuf, buf, (size_t)ret) == -1) {
653: cvs_log(LP_ERR,
654: "failed to append received file data");
655: cvs_buf_free(fbuf);
656: return (NULL);
1.1 jfb 657: }
658:
659: cnt += (off_t)ret;
660: } while (cnt < fsz);
661:
1.14 jfb 662: return (fbuf);
1.1 jfb 663: }
1.12 jfb 664:
665: /*
666: * cvs_sendreq()
667: *
668: * Send a request to the server of type <rid>, with optional arguments
669: * contained in <arg>, which should not be terminated by a newline.
670: * Returns 0 on success, or -1 on failure.
671: */
672: int
1.13 jfb 673: cvs_sendreq(struct cvsroot *root, u_int rid, const char *arg)
1.12 jfb 674: {
1.51 xsa 675: int ret, l;
1.13 jfb 676: struct cvs_req *req;
1.12 jfb 677:
678: if (root->cr_srvin == NULL) {
1.36 jfb 679: cvs_log(LP_ERR, "cannot send request %u: Not connected", rid);
1.12 jfb 680: return (-1);
681: }
682:
1.13 jfb 683: req = cvs_req_getbyid(rid);
684: if (req == NULL) {
1.12 jfb 685: cvs_log(LP_ERR, "unsupported request type %u", rid);
686: return (-1);
687: }
688:
1.18 jfb 689: /* is this request supported by the server? */
690: if (!CVS_GETVR(root, req->req_id)) {
1.57 joris 691: if (rid == CVS_REQ_VERSION) {
692: ret = cvs_sendreq(root, CVS_REQ_NOOP, arg);
693: } else {
694: cvs_log(LP_WARN,
695: "remote end does not support request `%s'",
696: req->req_str);
697: ret = -1;
698: }
699: return (ret);
1.18 jfb 700: }
701:
1.51 xsa 702: l = snprintf(cvs_proto_buf, sizeof(cvs_proto_buf), "%s%s%s\n",
1.13 jfb 703: req->req_str, (arg == NULL) ? "" : " ", (arg == NULL) ? "" : arg);
1.51 xsa 704: if (l == -1 || l >= (int)sizeof(cvs_proto_buf))
705: return (-1);
1.12 jfb 706:
707: if (cvs_server_inlog != NULL)
1.13 jfb 708: fputs(cvs_proto_buf, cvs_server_inlog);
1.12 jfb 709:
1.13 jfb 710: ret = fputs(cvs_proto_buf, root->cr_srvin);
1.12 jfb 711: if (ret == EOF) {
712: cvs_log(LP_ERRNO, "failed to send request to server");
713: return (-1);
714: }
1.17 jfb 715:
716: if (rid == CVS_REQ_VERSION)
717: cvs_version_sent = 1;
1.12 jfb 718:
1.13 jfb 719: if (req->req_flags & CVS_REQF_RESP)
1.12 jfb 720: ret = cvs_getresp(root);
721:
1.13 jfb 722: return (ret);
1.12 jfb 723: }
724:
725:
726: /*
727: * cvs_getresp()
728: *
729: * Get a response from the server. This call will actually read and handle
730: * responses from the server until one of the response handlers returns
1.37 david 731: * non-zero (either an error occurred or the end of the response was reached).
1.12 jfb 732: * Returns the number of handled commands on success, or -1 on failure.
733: */
734: int
1.13 jfb 735: cvs_getresp(struct cvsroot *root)
1.12 jfb 736: {
1.13 jfb 737: int nbcmd, ret;
738: size_t len;
1.12 jfb 739:
740: nbcmd = 0;
741:
742: do {
743: /* wait for incoming data */
1.13 jfb 744: if (fgets(cvs_proto_buf, sizeof(cvs_proto_buf),
1.12 jfb 745: root->cr_srvout) == NULL) {
746: if (feof(root->cr_srvout))
747: return (0);
748: cvs_log(LP_ERRNO,
749: "failed to read response from server");
750: return (-1);
751: }
752:
753: if (cvs_server_outlog != NULL)
1.13 jfb 754: fputs(cvs_proto_buf, cvs_server_outlog);
1.12 jfb 755:
1.13 jfb 756: if ((len = strlen(cvs_proto_buf)) != 0) {
1.42 joris 757: /* if len - 1 != '\n' the line is truncated */
1.43 joris 758: if (cvs_proto_buf[len - 1] == '\n')
1.13 jfb 759: cvs_proto_buf[--len] = '\0';
1.12 jfb 760: }
761:
1.13 jfb 762: ret = cvs_resp_handle(root, cvs_proto_buf);
1.12 jfb 763: nbcmd++;
764: } while (ret == 0);
765:
766: if (ret > 0)
767: ret = nbcmd;
768: return (ret);
769: }
770:
771:
772: /*
1.13 jfb 773: * cvs_getln()
774: *
1.18 jfb 775: * Get a line from the remote end and store it in <lbuf>. The terminating
1.13 jfb 776: * newline character is stripped from the result.
1.55 jfb 777: * Returns the length in bytes of the line (not including the NUL byte), or
778: * -1 on failure.
1.13 jfb 779: */
780: int
781: cvs_getln(struct cvsroot *root, char *lbuf, size_t len)
782: {
783: size_t rlen;
1.18 jfb 784: FILE *in;
1.13 jfb 785:
1.18 jfb 786: if (cvs_cmdop == CVS_OP_SERVER)
787: in = stdin;
788: else
789: in = root->cr_srvout;
790:
791: if (fgets(lbuf, len, in) == NULL) {
792: if (ferror(in)) {
793: cvs_log(LP_ERRNO, "failed to read line");
1.13 jfb 794: return (-1);
795: }
796:
1.18 jfb 797: if (feof(in))
1.13 jfb 798: *lbuf = '\0';
799: }
800:
801: if (cvs_server_outlog != NULL)
802: fputs(lbuf, cvs_server_outlog);
803:
804: rlen = strlen(lbuf);
805: if ((rlen > 0) && (lbuf[rlen - 1] == '\n'))
806: lbuf[--rlen] = '\0';
807:
1.55 jfb 808: return (rlen);
1.13 jfb 809: }
810:
1.19 jfb 811:
1.13 jfb 812: /*
1.12 jfb 813: * cvs_sendresp()
814: *
1.19 jfb 815: * Send a response of type <rid> to the client, with optional arguments
1.12 jfb 816: * contained in <arg>, which should not be terminated by a newline.
817: * Returns 0 on success, or -1 on failure.
818: */
819: int
820: cvs_sendresp(u_int rid, const char *arg)
821: {
822: int ret;
1.19 jfb 823: struct cvs_resp *resp;
1.12 jfb 824:
825: resp = cvs_resp_getbyid(rid);
1.13 jfb 826: if (resp == NULL) {
1.12 jfb 827: cvs_log(LP_ERR, "unsupported response type %u", rid);
828: return (-1);
829: }
830:
1.19 jfb 831: ret = fputs(resp->resp_str, stdout);
1.12 jfb 832: if (ret == EOF) {
833: cvs_log(LP_ERRNO, "failed to send response to client");
1.30 deraadt 834: } else {
1.19 jfb 835: if (arg != NULL) {
836: putc(' ', stdout);
837: fputs(arg, stdout);
838: }
1.12 jfb 839: putc('\n', stdout);
840: }
841: return (0);
842: }
843:
844:
1.19 jfb 845: #ifdef notyet
1.12 jfb 846: /*
847: * cvs_getreq()
848: *
849: * Get a request from the client.
850: */
851: int
852: cvs_getreq(void)
853: {
854: int nbcmd;
855:
856: nbcmd = 0;
857:
858: do {
859: /* wait for incoming data */
1.13 jfb 860: if (fgets(cvs_proto_buf, sizeof(cvs_proto_buf),
1.12 jfb 861: stdin) == NULL) {
862: if (feof(stdin))
863: return (0);
864: cvs_log(LP_ERRNO,
865: "failed to read request from client");
866: return (-1);
867: }
868:
1.13 jfb 869: if ((len = strlen(cvs_proto_buf)) != 0) {
870: if (cvs_proto_buf[len - 1] != '\n') {
1.12 jfb 871: /* truncated line */
1.30 deraadt 872: } else
1.13 jfb 873: cvs_proto_buf[--len] = '\0';
1.12 jfb 874: }
875:
1.13 jfb 876: ret = cvs_resp_handle(cvs_proto_buf);
1.12 jfb 877: } while (ret == 0);
878: }
879: #endif
880:
881:
882: /*
883: * cvs_sendln()
884: *
1.18 jfb 885: * Send a single line <line> string to the remote end. The line is sent as is,
1.12 jfb 886: * without any modifications.
887: * Returns 0 on success, or -1 on failure.
888: */
889: int
890: cvs_sendln(struct cvsroot *root, const char *line)
891: {
892: int nl;
893: size_t len;
1.18 jfb 894: FILE *out;
895:
896: if (cvs_cmdop == CVS_OP_SERVER)
897: out = stdout;
898: else
899: out = root->cr_srvin;
1.12 jfb 900:
901: nl = 0;
902: len = strlen(line);
903:
904: if ((len > 0) && (line[len - 1] != '\n'))
905: nl = 1;
906:
907: if (cvs_server_inlog != NULL) {
908: fputs(line, cvs_server_inlog);
909: if (nl)
1.55 jfb 910: putc('\n', cvs_server_inlog);
1.12 jfb 911: }
1.18 jfb 912: fputs(line, out);
1.12 jfb 913: if (nl)
1.55 jfb 914: putc('\n', out);
1.12 jfb 915: return (0);
916: }
917:
918:
919: /*
1.13 jfb 920: * cvs_sendraw()
1.12 jfb 921: *
922: * Send the first <len> bytes from the buffer <src> to the server.
923: */
924: int
1.13 jfb 925: cvs_sendraw(struct cvsroot *root, const void *src, size_t len)
1.12 jfb 926: {
1.18 jfb 927: FILE *out;
928:
929: if (cvs_cmdop == CVS_OP_SERVER)
930: out = stdout;
931: else
932: out = root->cr_srvin;
933:
1.12 jfb 934: if (cvs_server_inlog != NULL)
935: fwrite(src, sizeof(char), len, cvs_server_inlog);
1.18 jfb 936: if (fwrite(src, sizeof(char), len, out) < len) {
1.38 jfb 937: cvs_log(LP_ERR, "failed to send data");
1.12 jfb 938: return (-1);
939: }
940:
941: return (0);
942: }
943:
944:
945: /*
1.13 jfb 946: * cvs_recvraw()
1.12 jfb 947: *
948: * Receive the first <len> bytes from the buffer <src> to the server.
949: */
950: ssize_t
1.13 jfb 951: cvs_recvraw(struct cvsroot *root, void *dst, size_t len)
1.12 jfb 952: {
953: size_t ret;
1.18 jfb 954: FILE *in;
955:
956: if (cvs_cmdop == CVS_OP_SERVER)
957: in = stdin;
958: else
959: in = root->cr_srvout;
1.12 jfb 960:
1.18 jfb 961: ret = fread(dst, sizeof(char), len, in);
1.12 jfb 962: if (ret == 0)
963: return (-1);
964: if (cvs_server_outlog != NULL)
965: fwrite(dst, sizeof(char), len, cvs_server_outlog);
966: return (ssize_t)ret;
967: }
968:
969:
970: /*
1.13 jfb 971: * cvs_senddir()
1.12 jfb 972: *
1.32 jfb 973: * Send a `Directory' request along with the 2 paths that follow it. If
974: * the directory info to be sent is the same as the last info sent, the
975: * call does nothing and simply returns without an error.
1.12 jfb 976: */
977: int
1.31 tedu 978: cvs_senddir(struct cvsroot *root, CVSFILE *dir)
1.12 jfb 979: {
1.60 xsa 980: size_t len;
1.28 jfb 981: char lbuf[MAXPATHLEN], rbuf[MAXPATHLEN];
1.12 jfb 982:
1.47 jfb 983: if (dir->cf_type != DT_DIR)
984: return (-1);
985:
1.32 jfb 986: cvs_file_getpath(dir, lbuf, sizeof(lbuf));
1.45 joris 987: if (strcmp(lbuf, cvs_lastdir) == 0 && cvs_cmdop != CVS_OP_CHECKOUT)
1.32 jfb 988: return (0);
989:
1.47 jfb 990: if (dir->cf_repo == NULL)
1.28 jfb 991: strlcpy(rbuf, root->cr_dir, sizeof(rbuf));
1.51 xsa 992: else {
1.60 xsa 993: len = cvs_path_cat(root->cr_dir, dir->cf_repo, rbuf,
994: sizeof(rbuf));
995: if (len >= sizeof(rbuf))
1.51 xsa 996: return (-1);
997: }
1.12 jfb 998:
1.28 jfb 999:
1000: if ((cvs_sendreq(root, CVS_REQ_DIRECTORY, lbuf) < 0) ||
1001: (cvs_sendln(root, rbuf) < 0))
1.12 jfb 1002: return (-1);
1.32 jfb 1003:
1004: strlcpy(cvs_lastdir, lbuf, sizeof(cvs_lastdir));
1.12 jfb 1005:
1006: return (0);
1007: }
1008:
1009:
1010: /*
1.13 jfb 1011: * cvs_sendarg()
1.12 jfb 1012: *
1013: * Send the argument <arg> to the server. The argument <append> is used to
1014: * determine if the argument should be simply appended to the last argument
1015: * sent or if it should be created as a new argument (0).
1016: */
1017: int
1.13 jfb 1018: cvs_sendarg(struct cvsroot *root, const char *arg, int append)
1.12 jfb 1019: {
1.13 jfb 1020: return cvs_sendreq(root, ((append == 0) ?
1021: CVS_REQ_ARGUMENT : CVS_REQ_ARGUMENTX), arg);
1.12 jfb 1022: }
1023:
1024:
1025: /*
1.13 jfb 1026: * cvs_sendentry()
1.12 jfb 1027: *
1028: * Send an `Entry' request to the server along with the mandatory fields from
1029: * the CVS entry <ent> (which are the name and revision).
1030: */
1031: int
1.47 jfb 1032: cvs_sendentry(struct cvsroot *root, const CVSFILE *file)
1.12 jfb 1033: {
1.51 xsa 1034: int l;
1.12 jfb 1035: char ebuf[128], numbuf[64];
1036:
1.47 jfb 1037: if (file->cf_type != DT_REG) {
1038: cvs_log(LP_ERR, "attempt to send Entry for non-regular file");
1039: return (-1);
1040: }
1.48 joris 1041:
1042: /* don't send Entry for unknown files */
1043: if (file->cf_cvstat == CVS_FST_UNKNOWN)
1044: return (0);
1.47 jfb 1045:
1.51 xsa 1046: l = snprintf(ebuf, sizeof(ebuf), "/%s/%s%s///", file->cf_name,
1.49 joris 1047: (file->cf_cvstat == CVS_FST_REMOVED) ? "-" : "",
1.47 jfb 1048: rcsnum_tostr(file->cf_lrev, numbuf, sizeof(numbuf)));
1.51 xsa 1049: if (l == -1 || l >= (int)sizeof(ebuf)) {
1050: errno = ENAMETOOLONG;
1051: cvs_log(LP_ERRNO, "%s", ebuf);
1052: return (-1);
1053: }
1.12 jfb 1054:
1.13 jfb 1055: return cvs_sendreq(root, CVS_REQ_ENTRY, ebuf);
1.12 jfb 1056: }
1057:
1058:
1059: /*
1.13 jfb 1060: * cvs_initlog()
1.12 jfb 1061: *
1062: * Initialize protocol logging if the CVS_CLIENT_LOG environment variable is
1063: * set. In this case, the variable's value is used as a path to which the
1064: * appropriate suffix is added (".in" for server input and ".out" for server
1065: * output.
1066: * Returns 0 on success, or -1 on failure.
1067: */
1068: static int
1.13 jfb 1069: cvs_initlog(void)
1.12 jfb 1070: {
1.52 joris 1071: int l;
1072: u_int i;
1073: char *env, *envdup, buf[MAXPATHLEN], fpath[MAXPATHLEN];
1074: char rpath[MAXPATHLEN], *s;
1075: struct stat st;
1076: time_t now;
1077: struct passwd *pwd;
1.12 jfb 1078:
1.13 jfb 1079: /* avoid doing it more than once */
1080: if (cvs_server_logon)
1081: return (0);
1082:
1.12 jfb 1083: env = getenv("CVS_CLIENT_LOG");
1084: if (env == NULL)
1085: return (0);
1086:
1.52 joris 1087: if ((envdup = strdup(env)) == NULL)
1088: return (-1);
1089:
1090: if ((s = strchr(envdup, '%')) != NULL)
1091: *s = '\0';
1092:
1093: strlcpy(buf, env, sizeof(buf));
1094: strlcpy(rpath, envdup, sizeof(rpath));
1.69 ! moritz 1095: free(envdup);
1.52 joris 1096:
1097: s = buf;
1098: while ((s = strchr(s, '%')) != NULL) {
1099: *s++;
1100: switch (*s) {
1101: case 'c':
1102: strlcpy(fpath, cvs_command, sizeof(fpath));
1103: break;
1104: case 'd':
1105: time(&now);
1.59 niallo 1106: strlcpy(fpath, ctime(&now), sizeof(fpath));
1.52 joris 1107: break;
1108: case 'p':
1109: snprintf(fpath, sizeof(fpath), "%d", getpid());
1110: break;
1111: case 'u':
1112: if ((pwd = getpwuid(getuid())) != NULL)
1113: strlcpy(fpath, pwd->pw_name, sizeof(fpath));
1114: else
1115: fpath[0] = '\0';
1116: endpwent();
1117: break;
1118: default:
1119: fpath[0] = '\0';
1120: break;
1.58 joris 1121: }
1.52 joris 1122:
1123: if (fpath[0] != '\0') {
1124: strlcat(rpath, "-", sizeof(rpath));
1125: strlcat(rpath, fpath, sizeof(rpath));
1126: }
1127: }
1128:
1129: for (i = 0; i < UINT_MAX; i++) {
1130: l = snprintf(fpath, sizeof(fpath), "%s-%d.in", rpath, i);
1131: if (l == -1 || l >= (int)sizeof(fpath)) {
1132: errno = ENAMETOOLONG;
1133: cvs_log(LP_ERRNO, "%s", fpath);
1134: return (-1);
1135: }
1136:
1137: if (stat(fpath, &st) != -1)
1138: continue;
1139:
1140: if (errno != ENOENT)
1141: return (-1);
1142:
1143: break;
1144: }
1145:
1.12 jfb 1146: cvs_server_inlog = fopen(fpath, "w");
1147: if (cvs_server_inlog == NULL) {
1148: cvs_log(LP_ERRNO, "failed to open server input log `%s'",
1149: fpath);
1150: return (-1);
1151: }
1152:
1.52 joris 1153: for (i = 0; i < UINT_MAX; i++) {
1154: l = snprintf(fpath, sizeof(fpath), "%s-%d.out", rpath, i);
1155: if (l == -1 || l >= (int)sizeof(fpath)) {
1156: errno = ENAMETOOLONG;
1157: cvs_log(LP_ERRNO, "%s", fpath);
1158: return (-1);
1159: }
1160:
1161: if (stat(fpath, &st) != -1)
1162: continue;
1163:
1164: if (errno != ENOENT)
1165: return (-1);
1166:
1167: break;
1168: }
1169:
1.12 jfb 1170: cvs_server_outlog = fopen(fpath, "w");
1171: if (cvs_server_outlog == NULL) {
1172: cvs_log(LP_ERRNO, "failed to open server output log `%s'",
1173: fpath);
1174: return (-1);
1175: }
1176:
1177: /* make the streams line-buffered */
1178: setvbuf(cvs_server_inlog, NULL, _IOLBF, 0);
1179: setvbuf(cvs_server_outlog, NULL, _IOLBF, 0);
1180:
1.13 jfb 1181: cvs_server_logon = 1;
1.12 jfb 1182:
1183: return (0);
1184: }
![[BACK]](/icons/back.gif){kind=icon}
Return to proto.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / cvs