Annotation of src/usr.bin/cvs/proto.c, Revision 1.80
1.80 ! joris 1: /* $OpenBSD: proto.c,v 1.79 2005/10/17 16:16:00 moritz 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:
1.72 joris 32: * http://www.iam.unibe.ch/~til/documentation/cvs/cvsclient_toc.html
33: * http://www.elegosoft.com/cvs/cvsclient_toc.html
1.1 jfb 34: *
35: * The protocol is split up into two parts; the first part is the client side
36: * of things and is composed of all the response handlers, which are all named
37: * with a prefix of "cvs_resp_". The second part is the set of request
38: * handlers used by the server. These handlers process the request and
39: * generate the appropriate response to send back. The prefix for request
40: * handlers is "cvs_req_".
41: *
42: */
43:
44: #include <sys/types.h>
45: #include <sys/stat.h>
46:
1.56 xsa 47: #include <errno.h>
1.1 jfb 48: #include <fcntl.h>
1.56 xsa 49: #include <libgen.h>
50: #include <pwd.h>
1.1 jfb 51: #include <stdio.h>
52: #include <stdlib.h>
1.56 xsa 53: #include <string.h>
1.1 jfb 54: #include <unistd.h>
55:
56: #include "cvs.h"
57: #include "log.h"
1.13 jfb 58: #include "proto.h"
1.1 jfb 59:
60:
1.11 jfb 61: /* request flags */
1.68 xsa 62: #define CVS_REQF_RESP 0x01
1.11 jfb 63:
64:
1.68 xsa 65: static int cvs_initlog(void);
1.1 jfb 66:
1.18 jfb 67: struct cvs_req cvs_requests[] = {
68: { CVS_REQ_DIRECTORY, "Directory", 0 },
69: { CVS_REQ_MAXDOTDOT, "Max-dotdot", 0 },
70: { CVS_REQ_STATICDIR, "Static-directory", 0 },
71: { CVS_REQ_STICKY, "Sticky", 0 },
72: { CVS_REQ_ENTRY, "Entry", 0 },
73: { CVS_REQ_ENTRYEXTRA, "EntryExtra", 0 },
74: { CVS_REQ_CHECKINTIME, "Checkin-time", 0 },
75: { CVS_REQ_MODIFIED, "Modified", 0 },
76: { CVS_REQ_ISMODIFIED, "Is-modified", 0 },
77: { CVS_REQ_UNCHANGED, "Unchanged", 0 },
78: { CVS_REQ_USEUNCHANGED, "UseUnchanged", 0 },
79: { CVS_REQ_NOTIFY, "Notify", 0 },
80: { CVS_REQ_NOTIFYUSER, "NotifyUser", 0 },
81: { CVS_REQ_QUESTIONABLE, "Questionable", 0 },
82: { CVS_REQ_CASE, "Case", 0 },
83: { CVS_REQ_UTF8, "Utf8", 0 },
84: { CVS_REQ_ARGUMENT, "Argument", 0 },
85: { CVS_REQ_ARGUMENTX, "Argumentx", 0 },
86: { CVS_REQ_GLOBALOPT, "Global_option", 0 },
87: { CVS_REQ_GZIPSTREAM, "Gzip-stream", 0 },
88: { CVS_REQ_READCVSRC2, "read-cvsrc2", 0 },
89: { CVS_REQ_READWRAP, "read-cvswrappers", 0 },
90: { CVS_REQ_READIGNORE, "read-cvsignore", 0 },
91: { CVS_REQ_ERRIFREADER, "Error-If-Reader", 0 },
92: { CVS_REQ_VALIDRCSOPT, "Valid-RcsOptions", 0 },
93: { CVS_REQ_SET, "Set", 0 },
94: { CVS_REQ_XPANDMOD, "expand-modules", CVS_REQF_RESP },
1.26 jfb 95: { CVS_REQ_LOG, "log", CVS_REQF_RESP },
1.18 jfb 96: { CVS_REQ_CO, "co", CVS_REQF_RESP },
97: { CVS_REQ_EXPORT, "export", CVS_REQF_RESP },
1.26 jfb 98: { CVS_REQ_ANNOTATE, "annotate", CVS_REQF_RESP },
99: { CVS_REQ_RDIFF, "rdiff", CVS_REQF_RESP },
1.18 jfb 100: { CVS_REQ_RTAG, "rtag", CVS_REQF_RESP },
101: { CVS_REQ_INIT, "init", CVS_REQF_RESP },
102: { CVS_REQ_STATUS, "status", CVS_REQF_RESP },
103: { CVS_REQ_UPDATE, "update", CVS_REQF_RESP },
1.26 jfb 104: { CVS_REQ_HISTORY, "history", CVS_REQF_RESP },
1.18 jfb 105: { CVS_REQ_IMPORT, "import", CVS_REQF_RESP },
106: { CVS_REQ_ADD, "add", CVS_REQF_RESP },
107: { CVS_REQ_REMOVE, "remove", CVS_REQF_RESP },
108: { CVS_REQ_RELEASE, "release", CVS_REQF_RESP },
109: { CVS_REQ_ROOT, "Root", 0 },
110: { CVS_REQ_VALIDRESP, "Valid-responses", 0 },
111: { CVS_REQ_VALIDREQ, "valid-requests", CVS_REQF_RESP },
112: { CVS_REQ_VERSION, "version", CVS_REQF_RESP },
113: { CVS_REQ_NOOP, "noop", CVS_REQF_RESP },
114: { CVS_REQ_DIFF, "diff", CVS_REQF_RESP },
1.29 jfb 115: { CVS_REQ_CI, "ci", CVS_REQF_RESP },
1.35 jfb 116: { CVS_REQ_TAG, "tag", CVS_REQF_RESP },
1.41 joris 117: { CVS_REQ_ADMIN, "admin", CVS_REQF_RESP },
1.76 xsa 118: { CVS_REQ_WATCHERS, "watchers", CVS_REQF_RESP },
1.79 moritz 119: { CVS_REQ_WATCH_ON, "watch-on", CVS_REQF_RESP },
120: { CVS_REQ_WATCH_OFF, "watch-off", CVS_REQF_RESP },
121: { CVS_REQ_WATCH_ADD, "watch-add", CVS_REQF_RESP },
122: { CVS_REQ_WATCH_REMOVE, "watch-remove", CVS_REQF_RESP },
1.78 xsa 123: { CVS_REQ_EDITORS, "editors", CVS_REQF_RESP },
1.1 jfb 124: };
125:
1.18 jfb 126: struct cvs_resp cvs_responses[] = {
127: { CVS_RESP_OK, "ok" },
128: { CVS_RESP_ERROR, "error" },
129: { CVS_RESP_VALIDREQ, "Valid-requests" },
130: { CVS_RESP_M, "M" },
131: { CVS_RESP_MBINARY, "Mbinary" },
132: { CVS_RESP_MT, "MT" },
133: { CVS_RESP_E, "E" },
134: { CVS_RESP_F, "F" },
135: { CVS_RESP_CREATED, "Created" },
136: { CVS_RESP_UPDATED, "Updated" },
137: { CVS_RESP_UPDEXIST, "Update-existing" },
138: { CVS_RESP_MERGED, "Merged" },
139: { CVS_RESP_REMOVED, "Removed" },
1.63 joris 140: { CVS_RESP_RMENTRY, "Remove-entry" },
1.18 jfb 141: { CVS_RESP_CKSUM, "Checksum" },
142: { CVS_RESP_CLRSTATDIR, "Clear-static-directory" },
143: { CVS_RESP_SETSTATDIR, "Set-static-directory" },
144: { CVS_RESP_NEWENTRY, "New-entry" },
145: { CVS_RESP_CHECKEDIN, "Checked-in" },
146: { CVS_RESP_MODE, "Mode" },
147: { CVS_RESP_MODTIME, "Mod-time" },
148: { CVS_RESP_MODXPAND, "Module-expansion" },
149: { CVS_RESP_SETSTICKY, "Set-sticky" },
150: { CVS_RESP_CLRSTICKY, "Clear-sticky" },
151: { CVS_RESP_RCSDIFF, "Rcs-diff" },
152: { CVS_RESP_TEMPLATE, "Template" },
1.34 jfb 153: { CVS_RESP_COPYFILE, "Copy-file" },
1.1 jfb 154: };
155:
1.68 xsa 156: #define CVS_NBREQ (sizeof(cvs_requests)/sizeof(cvs_requests[0]))
157: #define CVS_NBRESP (sizeof(cvs_responses)/sizeof(cvs_responses[0]))
1.17 jfb 158:
159: /* hack to receive the remote version without outputting it */
1.18 jfb 160: u_int cvs_version_sent = 0;
1.17 jfb 161:
1.13 jfb 162: static char cvs_proto_buf[4096];
163:
164: /*
1.37 david 165: * Output files for protocol logging when the CVS_CLIENT_LOG environment
1.13 jfb 166: * variable is set.
167: */
168: static int cvs_server_logon = 0;
169: static FILE *cvs_server_inlog = NULL;
170: static FILE *cvs_server_outlog = NULL;
171:
1.28 jfb 172: static pid_t cvs_subproc_pid;
173:
1.32 jfb 174: /* last directory sent with cvs_senddir() */
175: static char cvs_lastdir[MAXPATHLEN] = "";
176:
1.13 jfb 177:
178: /*
179: * cvs_connect()
180: *
181: * Open a client connection to the cvs server whose address is given in
182: * the <root> variable. The method used to connect depends on the
183: * setting of the CVS_RSH variable.
1.17 jfb 184: * Once the connection has been established, we first send the list of
185: * responses we support and request the list of supported requests from the
186: * server. Then, a version request is sent and various global flags are sent.
1.13 jfb 187: * Returns 0 on success, or -1 on failure.
188: */
189: int
190: cvs_connect(struct cvsroot *root)
191: {
1.20 jfb 192: int argc, infd[2], outfd[2], errfd[2];
1.71 xsa 193: char *argv[16], *cvs_server_cmd, tmsg[1024], *vresp;
1.13 jfb 194:
1.36 jfb 195: if (root->cr_method == CVS_METHOD_PSERVER) {
196: cvs_log(LP_ERR, "no pserver support due to security issues");
197: return (-1);
198: } else if ((root->cr_method == CVS_METHOD_KSERVER) ||
199: (root->cr_method == CVS_METHOD_GSERVER) ||
200: (root->cr_method == CVS_METHOD_EXT) ||
201: (root->cr_method == CVS_METHOD_FORK)) {
202: cvs_log(LP_ERR, "connection method not supported yet");
203: return (-1);
204: }
1.33 jfb 205:
206: if (root->cr_flags & CVS_ROOT_CONNECTED) {
207: cvs_log(LP_NOTICE, "already connected to CVSROOT");
208: return (0);
209: }
210:
1.13 jfb 211: if (pipe(infd) == -1) {
212: cvs_log(LP_ERRNO,
213: "failed to create input pipe for client connection");
214: return (-1);
215: }
216:
217: if (pipe(outfd) == -1) {
218: cvs_log(LP_ERRNO,
219: "failed to create output pipe for client connection");
220: (void)close(infd[0]);
221: (void)close(infd[1]);
222: return (-1);
223: }
224:
1.20 jfb 225: if (pipe(errfd) == -1) {
226: cvs_log(LP_ERRNO,
227: "failed to create error pipe for client connection");
228: (void)close(infd[0]);
229: (void)close(infd[1]);
230: (void)close(outfd[0]);
231: (void)close(outfd[1]);
232: return (-1);
233: }
234:
1.28 jfb 235: cvs_subproc_pid = fork();
236: if (cvs_subproc_pid == -1) {
1.13 jfb 237: cvs_log(LP_ERRNO, "failed to fork for cvs server connection");
238: return (-1);
1.30 deraadt 239: } else if (cvs_subproc_pid == 0) {
1.13 jfb 240: if ((dup2(infd[0], STDIN_FILENO) == -1) ||
1.23 jfb 241: (dup2(outfd[1], STDOUT_FILENO) == -1)) {
1.13 jfb 242: cvs_log(LP_ERRNO,
243: "failed to setup standard streams for cvs server");
244: return (-1);
245: }
246: (void)close(infd[1]);
247: (void)close(outfd[0]);
1.20 jfb 248: (void)close(errfd[0]);
1.13 jfb 249:
250: argc = 0;
251: argv[argc++] = cvs_rsh;
252:
253: if (root->cr_user != NULL) {
254: argv[argc++] = "-l";
255: argv[argc++] = root->cr_user;
256: }
257:
258: cvs_server_cmd = getenv("CVS_SERVER");
259: if (cvs_server_cmd == NULL)
1.20 jfb 260: cvs_server_cmd = CVS_SERVER_DEFAULT;
1.13 jfb 261:
262: argv[argc++] = root->cr_host;
263: argv[argc++] = cvs_server_cmd;
264: argv[argc++] = "server";
265: argv[argc] = NULL;
1.71 xsa 266:
267: if (cvs_trace == 1) {
268: tmsg[0] = '\0';
269: for (argc = 0; argv[argc] != NULL; argc++) {
270: strlcat(tmsg, argv[argc], sizeof(tmsg));
271: strlcat(tmsg, " ", sizeof(tmsg));
272: }
273: }
274: cvs_log(LP_TRACE, "Starting server: %s", tmsg);
1.13 jfb 275:
276: execvp(argv[0], argv);
277: cvs_log(LP_ERRNO, "failed to exec");
1.73 xsa 278: exit(CVS_EX_PROTO);
1.13 jfb 279: }
280:
281: /* we are the parent */
282: (void)close(infd[0]);
283: (void)close(outfd[1]);
1.20 jfb 284: (void)close(errfd[1]);
1.13 jfb 285:
286: root->cr_srvin = fdopen(infd[1], "w");
287: if (root->cr_srvin == NULL) {
288: cvs_log(LP_ERRNO, "failed to create pipe stream");
289: return (-1);
290: }
291:
292: root->cr_srvout = fdopen(outfd[0], "r");
293: if (root->cr_srvout == NULL) {
294: cvs_log(LP_ERRNO, "failed to create pipe stream");
1.20 jfb 295: return (-1);
296: }
297:
1.13 jfb 298: /* make the streams line-buffered */
1.75 xsa 299: (void)setvbuf(root->cr_srvin, NULL, _IOLBF, (size_t)0);
300: (void)setvbuf(root->cr_srvout, NULL, _IOLBF, (size_t)0);
1.13 jfb 301:
302: cvs_initlog();
303:
304: /*
305: * Send the server the list of valid responses, then ask for valid
306: * requests.
307: */
308:
1.40 jfb 309: if ((vresp = cvs_resp_getvalid()) == NULL) {
1.13 jfb 310: cvs_log(LP_ERR, "can't generate list of valid responses");
311: return (-1);
312: }
313:
314: if (cvs_sendreq(root, CVS_REQ_VALIDRESP, vresp) < 0) {
1.40 jfb 315: cvs_log(LP_ERR, "failed to get valid responses");
1.80 ! joris 316: xfree(vresp);
1.40 jfb 317: return (-1);
1.13 jfb 318: }
1.80 ! joris 319: xfree(vresp);
1.13 jfb 320:
321: if (cvs_sendreq(root, CVS_REQ_VALIDREQ, NULL) < 0) {
322: cvs_log(LP_ERR, "failed to get valid requests from server");
323: return (-1);
324: }
325:
1.62 xsa 326: /* send the CVSROOT to the server */
327: if (cvs_sendreq(root, CVS_REQ_ROOT, root->cr_dir) < 0)
1.54 joris 328: return (-1);
329:
1.40 jfb 330: /* don't fail if this request doesn't work */
1.17 jfb 331: if (cvs_sendreq(root, CVS_REQ_VERSION, NULL) < 0)
1.40 jfb 332: cvs_log(LP_WARN, "failed to get remote version");
1.17 jfb 333:
1.13 jfb 334: /* now share our global options with the server */
1.61 joris 335: if ((verbosity <= 1) &&
1.40 jfb 336: (cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-q") < 0))
337: return (-1);
1.61 joris 338: if ((verbosity == 0) &&
1.40 jfb 339: (cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-Q") < 0))
340: return (-1);
341:
1.66 xsa 342: if ((cvs_noexec == 1) &&
343: (cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-n") < 0))
1.53 jfb 344: return (-1);
1.66 xsa 345: if ((cvs_nolog == 1) &&
346: (cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-l") < 0))
1.40 jfb 347: return (-1);
1.66 xsa 348: if ((cvs_readonly == 1) &&
349: (cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-r") < 0))
1.40 jfb 350: return (-1);
1.66 xsa 351: if ((cvs_trace == 1) &&
352: (cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-t") < 0))
1.13 jfb 353: return (-1);
354:
355: /* not sure why, but we have to send this */
356: if (cvs_sendreq(root, CVS_REQ_USEUNCHANGED, NULL) < 0)
357: return (-1);
358:
359: cvs_log(LP_DEBUG, "connected to %s", root->cr_host);
360:
1.33 jfb 361: root->cr_flags |= CVS_ROOT_CONNECTED;
362:
1.13 jfb 363: return (0);
364: }
365:
366:
367: /*
368: * cvs_disconnect()
369: *
370: * Disconnect from the cvs server.
371: */
372: void
373: cvs_disconnect(struct cvsroot *root)
374: {
1.33 jfb 375: if (!(root->cr_flags & CVS_ROOT_CONNECTED))
376: return;
377:
1.13 jfb 378: cvs_log(LP_DEBUG, "closing connection to %s", root->cr_host);
379: if (root->cr_srvin != NULL) {
380: (void)fclose(root->cr_srvin);
381: root->cr_srvin = NULL;
382: }
383: if (root->cr_srvout != NULL) {
384: (void)fclose(root->cr_srvout);
385: root->cr_srvout = NULL;
386: }
1.33 jfb 387:
388: root->cr_flags &= ~CVS_ROOT_CONNECTED;
1.13 jfb 389: }
390:
1.1 jfb 391:
392: /*
393: * cvs_req_getbyid()
394: *
395: */
1.13 jfb 396: struct cvs_req*
1.1 jfb 397: cvs_req_getbyid(int reqid)
398: {
399: u_int i;
400:
401: for (i = 0; i < CVS_NBREQ; i++)
402: if (cvs_requests[i].req_id == reqid)
1.13 jfb 403: return &(cvs_requests[i]);
1.31 tedu 404:
1.1 jfb 405: return (NULL);
406: }
407:
408:
409: /*
410: * cvs_req_getbyname()
411: */
1.13 jfb 412: struct cvs_req*
1.1 jfb 413: cvs_req_getbyname(const char *rname)
414: {
415: u_int i;
416:
417: for (i = 0; i < CVS_NBREQ; i++)
418: if (strcmp(cvs_requests[i].req_str, rname) == 0)
1.13 jfb 419: return &(cvs_requests[i]);
1.1 jfb 420:
1.13 jfb 421: return (NULL);
1.1 jfb 422: }
423:
424:
425: /*
426: * cvs_req_getvalid()
427: *
428: * Build a space-separated list of all the requests that this protocol
429: * implementation supports.
430: */
1.67 xsa 431: char *
1.1 jfb 432: cvs_req_getvalid(void)
433: {
434: u_int i;
435: size_t len;
436: char *vrstr;
437: BUF *buf;
438:
1.75 xsa 439: buf = cvs_buf_alloc((size_t)512, BUF_AUTOEXT);
1.1 jfb 440: if (buf == NULL)
441: return (NULL);
442:
443: cvs_buf_set(buf, cvs_requests[0].req_str,
1.75 xsa 444: strlen(cvs_requests[0].req_str), (size_t)0);
1.1 jfb 445:
446: for (i = 1; i < CVS_NBREQ; i++) {
447: if ((cvs_buf_putc(buf, ' ') < 0) ||
448: (cvs_buf_append(buf, cvs_requests[i].req_str,
449: strlen(cvs_requests[i].req_str)) < 0)) {
450: cvs_buf_free(buf);
451: return (NULL);
452: }
453: }
454:
455: /* NUL-terminate */
456: if (cvs_buf_putc(buf, '\0') < 0) {
457: cvs_buf_free(buf);
458: return (NULL);
459: }
460:
1.70 moritz 461: len = cvs_buf_len(buf);
1.80 ! joris 462: vrstr = (char *)xmalloc(len);
1.75 xsa 463: cvs_buf_copy(buf, (size_t)0, vrstr, len);
1.1 jfb 464: cvs_buf_free(buf);
465:
466: return (vrstr);
467: }
468:
469:
470: /*
471: * cvs_resp_getbyid()
472: *
473: */
1.13 jfb 474: struct cvs_resp*
1.1 jfb 475: cvs_resp_getbyid(int respid)
476: {
477: u_int i;
478:
1.44 tedu 479: for (i = 0; i < CVS_NBRESP; i++)
1.13 jfb 480: if (cvs_responses[i].resp_id == (u_int)respid)
481: return &(cvs_responses[i]);
1.31 tedu 482:
1.1 jfb 483: return (NULL);
484: }
485:
486:
487: /*
488: * cvs_resp_getbyname()
489: */
1.67 xsa 490: struct cvs_resp *
1.1 jfb 491: cvs_resp_getbyname(const char *rname)
492: {
493: u_int i;
494:
1.44 tedu 495: for (i = 0; i < CVS_NBRESP; i++)
1.1 jfb 496: if (strcmp(cvs_responses[i].resp_str, rname) == 0)
1.13 jfb 497: return &(cvs_responses[i]);
1.1 jfb 498:
1.13 jfb 499: return (NULL);
1.1 jfb 500: }
501:
502:
503: /*
504: * cvs_resp_getvalid()
505: *
506: * Build a space-separated list of all the responses that this protocol
507: * implementation supports.
508: */
1.67 xsa 509: char *
1.1 jfb 510: cvs_resp_getvalid(void)
511: {
512: u_int i;
513: size_t len;
514: char *vrstr;
515: BUF *buf;
516:
1.75 xsa 517: buf = cvs_buf_alloc((size_t)512, BUF_AUTOEXT);
1.1 jfb 518: if (buf == NULL)
519: return (NULL);
520:
521: cvs_buf_set(buf, cvs_responses[0].resp_str,
1.75 xsa 522: strlen(cvs_responses[0].resp_str), (size_t)0);
1.1 jfb 523:
524: for (i = 1; i < CVS_NBRESP; i++) {
525: if ((cvs_buf_putc(buf, ' ') < 0) ||
526: (cvs_buf_append(buf, cvs_responses[i].resp_str,
527: strlen(cvs_responses[i].resp_str)) < 0)) {
528: cvs_buf_free(buf);
529: return (NULL);
530: }
531: }
532:
533: /* NUL-terminate */
534: if (cvs_buf_putc(buf, '\0') < 0) {
535: cvs_buf_free(buf);
536: return (NULL);
537: }
538:
1.70 moritz 539: len = cvs_buf_len(buf);
1.80 ! joris 540: vrstr = (char *)xmalloc(len);
1.75 xsa 541: cvs_buf_copy(buf, (size_t)0, vrstr, len);
1.1 jfb 542: cvs_buf_free(buf);
543:
544: return (vrstr);
545: }
546:
547:
548: /*
549: * cvs_sendfile()
550: *
551: * Send the mode and size of a file followed by the file's contents.
552: * Returns 0 on success, or -1 on failure.
553: */
554: int
1.13 jfb 555: cvs_sendfile(struct cvsroot *root, const char *path)
1.1 jfb 556: {
1.51 xsa 557: int fd, l;
1.1 jfb 558: ssize_t ret;
559: char buf[4096];
560: struct stat st;
561:
1.38 jfb 562: cvs_log(LP_TRACE, "Sending file `%s' to server", basename(path));
563:
1.1 jfb 564: if (stat(path, &st) == -1) {
565: cvs_log(LP_ERRNO, "failed to stat `%s'", path);
566: return (-1);
567: }
568:
1.24 jfb 569: if (cvs_modetostr(st.st_mode, buf, sizeof(buf)) < 0)
570: return (-1);
571:
1.1 jfb 572: fd = open(path, O_RDONLY, 0);
573: if (fd == -1) {
1.38 jfb 574: cvs_log(LP_ERRNO, "failed to open `%s'", path);
1.1 jfb 575: return (-1);
576: }
577:
1.38 jfb 578: if (cvs_sendln(root, buf) < 0) {
579: (void)close(fd);
580: return (-1);
581: }
1.51 xsa 582: l = snprintf(buf, sizeof(buf), "%lld\n", st.st_size);
583: if (l == -1 || l >= (int)sizeof(buf))
584: return (-1);
585:
1.38 jfb 586: if (cvs_sendln(root, buf) < 0) {
587: (void)close(fd);
588: return (-1);
589: }
1.1 jfb 590:
591: while ((ret = read(fd, buf, sizeof(buf))) != 0) {
592: if (ret == -1) {
1.24 jfb 593: (void)close(fd);
1.1 jfb 594: cvs_log(LP_ERRNO, "failed to read file `%s'", path);
595: return (-1);
596: }
597:
1.38 jfb 598: if (cvs_sendraw(root, buf, (size_t)ret) < 0) {
599: (void)close(fd);
600: return (-1);
601: }
1.1 jfb 602: }
603:
604: (void)close(fd);
605: return (0);
606: }
607:
608:
609: /*
610: * cvs_recvfile()
611: *
612: * Receive the mode and size of a file followed the file's contents and
613: * create or update the file whose path is <path> with the received
614: * information.
615: */
1.14 jfb 616: BUF*
617: cvs_recvfile(struct cvsroot *root, mode_t *mode)
1.1 jfb 618: {
619: size_t len;
620: ssize_t ret;
621: off_t fsz, cnt;
622: char buf[4096], *ep;
1.14 jfb 623: BUF *fbuf;
624:
625: fbuf = cvs_buf_alloc(sizeof(buf), BUF_AUTOEXT);
626: if (fbuf == NULL)
627: return (NULL);
1.1 jfb 628:
1.13 jfb 629: if ((cvs_getln(root, buf, sizeof(buf)) < 0) ||
1.14 jfb 630: (cvs_strtomode(buf, mode) < 0)) {
1.44 tedu 631: cvs_buf_free(fbuf);
1.14 jfb 632: return (NULL);
1.1 jfb 633: }
634:
1.50 joris 635: if (cvs_getln(root, buf, sizeof(buf)) < 0) {
636: cvs_buf_free(fbuf);
637: return (NULL);
638: }
1.1 jfb 639:
640: fsz = (off_t)strtol(buf, &ep, 10);
641: if (*ep != '\0') {
642: cvs_log(LP_ERR, "parse error in file size transmission");
1.44 tedu 643: cvs_buf_free(fbuf);
1.14 jfb 644: return (NULL);
1.1 jfb 645: }
646:
647: cnt = 0;
648: do {
649: len = MIN(sizeof(buf), (size_t)(fsz - cnt));
1.6 jfb 650: if (len == 0)
651: break;
1.13 jfb 652: ret = cvs_recvraw(root, buf, len);
1.1 jfb 653: if (ret == -1) {
1.14 jfb 654: cvs_buf_free(fbuf);
655: return (NULL);
1.1 jfb 656: }
657:
1.14 jfb 658: if (cvs_buf_append(fbuf, buf, (size_t)ret) == -1) {
659: cvs_log(LP_ERR,
660: "failed to append received file data");
661: cvs_buf_free(fbuf);
662: return (NULL);
1.1 jfb 663: }
664:
665: cnt += (off_t)ret;
666: } while (cnt < fsz);
667:
1.14 jfb 668: return (fbuf);
1.1 jfb 669: }
1.12 jfb 670:
671: /*
672: * cvs_sendreq()
673: *
674: * Send a request to the server of type <rid>, with optional arguments
675: * contained in <arg>, which should not be terminated by a newline.
676: * Returns 0 on success, or -1 on failure.
677: */
678: int
1.13 jfb 679: cvs_sendreq(struct cvsroot *root, u_int rid, const char *arg)
1.12 jfb 680: {
1.51 xsa 681: int ret, l;
1.13 jfb 682: struct cvs_req *req;
1.12 jfb 683:
684: if (root->cr_srvin == NULL) {
1.36 jfb 685: cvs_log(LP_ERR, "cannot send request %u: Not connected", rid);
1.12 jfb 686: return (-1);
687: }
688:
1.13 jfb 689: req = cvs_req_getbyid(rid);
690: if (req == NULL) {
1.12 jfb 691: cvs_log(LP_ERR, "unsupported request type %u", rid);
692: return (-1);
693: }
694:
1.18 jfb 695: /* is this request supported by the server? */
696: if (!CVS_GETVR(root, req->req_id)) {
1.57 joris 697: if (rid == CVS_REQ_VERSION) {
698: ret = cvs_sendreq(root, CVS_REQ_NOOP, arg);
699: } else {
700: cvs_log(LP_WARN,
701: "remote end does not support request `%s'",
702: req->req_str);
703: ret = -1;
704: }
705: return (ret);
1.18 jfb 706: }
707:
1.51 xsa 708: l = snprintf(cvs_proto_buf, sizeof(cvs_proto_buf), "%s%s%s\n",
1.13 jfb 709: req->req_str, (arg == NULL) ? "" : " ", (arg == NULL) ? "" : arg);
1.51 xsa 710: if (l == -1 || l >= (int)sizeof(cvs_proto_buf))
711: return (-1);
1.12 jfb 712:
713: if (cvs_server_inlog != NULL)
1.13 jfb 714: fputs(cvs_proto_buf, cvs_server_inlog);
1.12 jfb 715:
1.13 jfb 716: ret = fputs(cvs_proto_buf, root->cr_srvin);
1.12 jfb 717: if (ret == EOF) {
718: cvs_log(LP_ERRNO, "failed to send request to server");
719: return (-1);
720: }
1.17 jfb 721:
722: if (rid == CVS_REQ_VERSION)
723: cvs_version_sent = 1;
1.12 jfb 724:
1.13 jfb 725: if (req->req_flags & CVS_REQF_RESP)
1.12 jfb 726: ret = cvs_getresp(root);
727:
1.13 jfb 728: return (ret);
1.12 jfb 729: }
730:
731:
732: /*
733: * cvs_getresp()
734: *
735: * Get a response from the server. This call will actually read and handle
736: * responses from the server until one of the response handlers returns
1.37 david 737: * non-zero (either an error occurred or the end of the response was reached).
1.12 jfb 738: * Returns the number of handled commands on success, or -1 on failure.
739: */
740: int
1.13 jfb 741: cvs_getresp(struct cvsroot *root)
1.12 jfb 742: {
1.13 jfb 743: int nbcmd, ret;
744: size_t len;
1.12 jfb 745:
746: nbcmd = 0;
747:
748: do {
749: /* wait for incoming data */
1.74 xsa 750: if (fgets(cvs_proto_buf, (int)sizeof(cvs_proto_buf),
1.12 jfb 751: root->cr_srvout) == NULL) {
752: if (feof(root->cr_srvout))
753: return (0);
754: cvs_log(LP_ERRNO,
755: "failed to read response from server");
756: return (-1);
757: }
758:
759: if (cvs_server_outlog != NULL)
1.13 jfb 760: fputs(cvs_proto_buf, cvs_server_outlog);
1.12 jfb 761:
1.13 jfb 762: if ((len = strlen(cvs_proto_buf)) != 0) {
1.42 joris 763: /* if len - 1 != '\n' the line is truncated */
1.43 joris 764: if (cvs_proto_buf[len - 1] == '\n')
1.13 jfb 765: cvs_proto_buf[--len] = '\0';
1.12 jfb 766: }
767:
1.13 jfb 768: ret = cvs_resp_handle(root, cvs_proto_buf);
1.12 jfb 769: nbcmd++;
770: } while (ret == 0);
771:
772: if (ret > 0)
773: ret = nbcmd;
774: return (ret);
775: }
776:
777:
778: /*
1.13 jfb 779: * cvs_getln()
780: *
1.18 jfb 781: * Get a line from the remote end and store it in <lbuf>. The terminating
1.13 jfb 782: * newline character is stripped from the result.
1.55 jfb 783: * Returns the length in bytes of the line (not including the NUL byte), or
784: * -1 on failure.
1.13 jfb 785: */
786: int
787: cvs_getln(struct cvsroot *root, char *lbuf, size_t len)
788: {
789: size_t rlen;
1.18 jfb 790: FILE *in;
1.13 jfb 791:
1.18 jfb 792: if (cvs_cmdop == CVS_OP_SERVER)
793: in = stdin;
794: else
795: in = root->cr_srvout;
796:
1.74 xsa 797: if (fgets(lbuf, (int)len, in) == NULL) {
1.18 jfb 798: if (ferror(in)) {
799: cvs_log(LP_ERRNO, "failed to read line");
1.13 jfb 800: return (-1);
801: }
802:
1.18 jfb 803: if (feof(in))
1.13 jfb 804: *lbuf = '\0';
805: }
806:
807: if (cvs_server_outlog != NULL)
808: fputs(lbuf, cvs_server_outlog);
809:
810: rlen = strlen(lbuf);
811: if ((rlen > 0) && (lbuf[rlen - 1] == '\n'))
812: lbuf[--rlen] = '\0';
813:
1.55 jfb 814: return (rlen);
1.13 jfb 815: }
816:
1.19 jfb 817:
1.13 jfb 818: /*
1.12 jfb 819: * cvs_sendresp()
820: *
1.19 jfb 821: * Send a response of type <rid> to the client, with optional arguments
1.12 jfb 822: * contained in <arg>, which should not be terminated by a newline.
823: * Returns 0 on success, or -1 on failure.
824: */
825: int
826: cvs_sendresp(u_int rid, const char *arg)
827: {
828: int ret;
1.19 jfb 829: struct cvs_resp *resp;
1.12 jfb 830:
831: resp = cvs_resp_getbyid(rid);
1.13 jfb 832: if (resp == NULL) {
1.12 jfb 833: cvs_log(LP_ERR, "unsupported response type %u", rid);
834: return (-1);
835: }
836:
1.19 jfb 837: ret = fputs(resp->resp_str, stdout);
1.12 jfb 838: if (ret == EOF) {
839: cvs_log(LP_ERRNO, "failed to send response to client");
1.30 deraadt 840: } else {
1.19 jfb 841: if (arg != NULL) {
842: putc(' ', stdout);
843: fputs(arg, stdout);
844: }
1.12 jfb 845: putc('\n', stdout);
846: }
847: return (0);
848: }
849:
850:
1.19 jfb 851: #ifdef notyet
1.12 jfb 852: /*
853: * cvs_getreq()
854: *
855: * Get a request from the client.
856: */
857: int
858: cvs_getreq(void)
859: {
860: int nbcmd;
861:
862: nbcmd = 0;
863:
864: do {
865: /* wait for incoming data */
1.74 xsa 866: if (fgets(cvs_proto_buf, (int)sizeof(cvs_proto_buf),
1.12 jfb 867: stdin) == NULL) {
868: if (feof(stdin))
869: return (0);
870: cvs_log(LP_ERRNO,
871: "failed to read request from client");
872: return (-1);
873: }
874:
1.13 jfb 875: if ((len = strlen(cvs_proto_buf)) != 0) {
876: if (cvs_proto_buf[len - 1] != '\n') {
1.12 jfb 877: /* truncated line */
1.30 deraadt 878: } else
1.13 jfb 879: cvs_proto_buf[--len] = '\0';
1.12 jfb 880: }
881:
1.13 jfb 882: ret = cvs_resp_handle(cvs_proto_buf);
1.12 jfb 883: } while (ret == 0);
884: }
885: #endif
886:
887:
888: /*
889: * cvs_sendln()
890: *
1.18 jfb 891: * Send a single line <line> string to the remote end. The line is sent as is,
1.12 jfb 892: * without any modifications.
893: * Returns 0 on success, or -1 on failure.
894: */
895: int
896: cvs_sendln(struct cvsroot *root, const char *line)
897: {
898: int nl;
899: size_t len;
1.18 jfb 900: FILE *out;
901:
902: if (cvs_cmdop == CVS_OP_SERVER)
903: out = stdout;
904: else
905: out = root->cr_srvin;
1.12 jfb 906:
907: nl = 0;
908: len = strlen(line);
909:
910: if ((len > 0) && (line[len - 1] != '\n'))
911: nl = 1;
912:
913: if (cvs_server_inlog != NULL) {
914: fputs(line, cvs_server_inlog);
915: if (nl)
1.55 jfb 916: putc('\n', cvs_server_inlog);
1.12 jfb 917: }
1.18 jfb 918: fputs(line, out);
1.12 jfb 919: if (nl)
1.55 jfb 920: putc('\n', out);
1.12 jfb 921: return (0);
922: }
923:
924:
925: /*
1.13 jfb 926: * cvs_sendraw()
1.12 jfb 927: *
928: * Send the first <len> bytes from the buffer <src> to the server.
929: */
930: int
1.13 jfb 931: cvs_sendraw(struct cvsroot *root, const void *src, size_t len)
1.12 jfb 932: {
1.18 jfb 933: FILE *out;
934:
935: if (cvs_cmdop == CVS_OP_SERVER)
936: out = stdout;
937: else
938: out = root->cr_srvin;
939:
1.12 jfb 940: if (cvs_server_inlog != NULL)
941: fwrite(src, sizeof(char), len, cvs_server_inlog);
1.18 jfb 942: if (fwrite(src, sizeof(char), len, out) < len) {
1.38 jfb 943: cvs_log(LP_ERR, "failed to send data");
1.12 jfb 944: return (-1);
945: }
946:
947: return (0);
948: }
949:
950:
951: /*
1.13 jfb 952: * cvs_recvraw()
1.12 jfb 953: *
954: * Receive the first <len> bytes from the buffer <src> to the server.
955: */
956: ssize_t
1.13 jfb 957: cvs_recvraw(struct cvsroot *root, void *dst, size_t len)
1.12 jfb 958: {
959: size_t ret;
1.18 jfb 960: FILE *in;
961:
962: if (cvs_cmdop == CVS_OP_SERVER)
963: in = stdin;
964: else
965: in = root->cr_srvout;
1.12 jfb 966:
1.18 jfb 967: ret = fread(dst, sizeof(char), len, in);
1.12 jfb 968: if (ret == 0)
969: return (-1);
970: if (cvs_server_outlog != NULL)
971: fwrite(dst, sizeof(char), len, cvs_server_outlog);
972: return (ssize_t)ret;
973: }
974:
975:
976: /*
1.13 jfb 977: * cvs_senddir()
1.12 jfb 978: *
1.32 jfb 979: * Send a `Directory' request along with the 2 paths that follow it. If
980: * the directory info to be sent is the same as the last info sent, the
981: * call does nothing and simply returns without an error.
1.12 jfb 982: */
983: int
1.31 tedu 984: cvs_senddir(struct cvsroot *root, CVSFILE *dir)
1.12 jfb 985: {
1.60 xsa 986: size_t len;
1.28 jfb 987: char lbuf[MAXPATHLEN], rbuf[MAXPATHLEN];
1.12 jfb 988:
1.47 jfb 989: if (dir->cf_type != DT_DIR)
990: return (-1);
991:
1.32 jfb 992: cvs_file_getpath(dir, lbuf, sizeof(lbuf));
1.45 joris 993: if (strcmp(lbuf, cvs_lastdir) == 0 && cvs_cmdop != CVS_OP_CHECKOUT)
1.32 jfb 994: return (0);
995:
1.47 jfb 996: if (dir->cf_repo == NULL)
1.28 jfb 997: strlcpy(rbuf, root->cr_dir, sizeof(rbuf));
1.51 xsa 998: else {
1.60 xsa 999: len = cvs_path_cat(root->cr_dir, dir->cf_repo, rbuf,
1000: sizeof(rbuf));
1001: if (len >= sizeof(rbuf))
1.51 xsa 1002: return (-1);
1003: }
1.12 jfb 1004:
1.28 jfb 1005:
1006: if ((cvs_sendreq(root, CVS_REQ_DIRECTORY, lbuf) < 0) ||
1007: (cvs_sendln(root, rbuf) < 0))
1.12 jfb 1008: return (-1);
1.32 jfb 1009:
1010: strlcpy(cvs_lastdir, lbuf, sizeof(cvs_lastdir));
1.12 jfb 1011:
1012: return (0);
1013: }
1014:
1015:
1016: /*
1.13 jfb 1017: * cvs_sendarg()
1.12 jfb 1018: *
1019: * Send the argument <arg> to the server. The argument <append> is used to
1020: * determine if the argument should be simply appended to the last argument
1021: * sent or if it should be created as a new argument (0).
1022: */
1023: int
1.13 jfb 1024: cvs_sendarg(struct cvsroot *root, const char *arg, int append)
1.12 jfb 1025: {
1.13 jfb 1026: return cvs_sendreq(root, ((append == 0) ?
1027: CVS_REQ_ARGUMENT : CVS_REQ_ARGUMENTX), arg);
1.12 jfb 1028: }
1029:
1030:
1031: /*
1.13 jfb 1032: * cvs_sendentry()
1.12 jfb 1033: *
1034: * Send an `Entry' request to the server along with the mandatory fields from
1035: * the CVS entry <ent> (which are the name and revision).
1036: */
1037: int
1.47 jfb 1038: cvs_sendentry(struct cvsroot *root, const CVSFILE *file)
1.12 jfb 1039: {
1.51 xsa 1040: int l;
1.77 xsa 1041: char ebuf[CVS_ENT_MAXLINELEN], numbuf[64];
1.12 jfb 1042:
1.47 jfb 1043: if (file->cf_type != DT_REG) {
1044: cvs_log(LP_ERR, "attempt to send Entry for non-regular file");
1045: return (-1);
1046: }
1.48 joris 1047:
1048: /* don't send Entry for unknown files */
1049: if (file->cf_cvstat == CVS_FST_UNKNOWN)
1050: return (0);
1.47 jfb 1051:
1.51 xsa 1052: l = snprintf(ebuf, sizeof(ebuf), "/%s/%s%s///", file->cf_name,
1.49 joris 1053: (file->cf_cvstat == CVS_FST_REMOVED) ? "-" : "",
1.47 jfb 1054: rcsnum_tostr(file->cf_lrev, numbuf, sizeof(numbuf)));
1.51 xsa 1055: if (l == -1 || l >= (int)sizeof(ebuf)) {
1056: errno = ENAMETOOLONG;
1057: cvs_log(LP_ERRNO, "%s", ebuf);
1058: return (-1);
1059: }
1.12 jfb 1060:
1.13 jfb 1061: return cvs_sendreq(root, CVS_REQ_ENTRY, ebuf);
1.12 jfb 1062: }
1063:
1064:
1065: /*
1.13 jfb 1066: * cvs_initlog()
1.12 jfb 1067: *
1068: * Initialize protocol logging if the CVS_CLIENT_LOG environment variable is
1069: * set. In this case, the variable's value is used as a path to which the
1070: * appropriate suffix is added (".in" for server input and ".out" for server
1071: * output.
1072: * Returns 0 on success, or -1 on failure.
1073: */
1074: static int
1.13 jfb 1075: cvs_initlog(void)
1.12 jfb 1076: {
1.52 joris 1077: int l;
1078: u_int i;
1079: char *env, *envdup, buf[MAXPATHLEN], fpath[MAXPATHLEN];
1080: char rpath[MAXPATHLEN], *s;
1081: struct stat st;
1082: time_t now;
1083: struct passwd *pwd;
1.12 jfb 1084:
1.13 jfb 1085: /* avoid doing it more than once */
1086: if (cvs_server_logon)
1087: return (0);
1088:
1.12 jfb 1089: env = getenv("CVS_CLIENT_LOG");
1090: if (env == NULL)
1091: return (0);
1092:
1.80 ! joris 1093: envdup = xstrdup(env);
1.52 joris 1094: if ((s = strchr(envdup, '%')) != NULL)
1095: *s = '\0';
1096:
1097: strlcpy(buf, env, sizeof(buf));
1098: strlcpy(rpath, envdup, sizeof(rpath));
1.80 ! joris 1099: xfree(envdup);
1.52 joris 1100:
1101: s = buf;
1102: while ((s = strchr(s, '%')) != NULL) {
1103: *s++;
1104: switch (*s) {
1105: case 'c':
1106: strlcpy(fpath, cvs_command, sizeof(fpath));
1107: break;
1108: case 'd':
1109: time(&now);
1.59 niallo 1110: strlcpy(fpath, ctime(&now), sizeof(fpath));
1.52 joris 1111: break;
1112: case 'p':
1113: snprintf(fpath, sizeof(fpath), "%d", getpid());
1114: break;
1115: case 'u':
1116: if ((pwd = getpwuid(getuid())) != NULL)
1117: strlcpy(fpath, pwd->pw_name, sizeof(fpath));
1118: else
1119: fpath[0] = '\0';
1120: endpwent();
1121: break;
1122: default:
1123: fpath[0] = '\0';
1124: break;
1.58 joris 1125: }
1.52 joris 1126:
1127: if (fpath[0] != '\0') {
1128: strlcat(rpath, "-", sizeof(rpath));
1129: strlcat(rpath, fpath, sizeof(rpath));
1130: }
1131: }
1132:
1133: for (i = 0; i < UINT_MAX; i++) {
1134: l = snprintf(fpath, sizeof(fpath), "%s-%d.in", rpath, i);
1135: if (l == -1 || l >= (int)sizeof(fpath)) {
1136: errno = ENAMETOOLONG;
1137: cvs_log(LP_ERRNO, "%s", fpath);
1138: return (-1);
1139: }
1140:
1141: if (stat(fpath, &st) != -1)
1142: continue;
1143:
1144: if (errno != ENOENT)
1145: return (-1);
1146:
1147: break;
1148: }
1149:
1.12 jfb 1150: cvs_server_inlog = fopen(fpath, "w");
1151: if (cvs_server_inlog == NULL) {
1152: cvs_log(LP_ERRNO, "failed to open server input log `%s'",
1153: fpath);
1154: return (-1);
1155: }
1156:
1.52 joris 1157: for (i = 0; i < UINT_MAX; i++) {
1158: l = snprintf(fpath, sizeof(fpath), "%s-%d.out", rpath, i);
1159: if (l == -1 || l >= (int)sizeof(fpath)) {
1160: errno = ENAMETOOLONG;
1161: cvs_log(LP_ERRNO, "%s", fpath);
1162: return (-1);
1163: }
1164:
1165: if (stat(fpath, &st) != -1)
1166: continue;
1167:
1168: if (errno != ENOENT)
1169: return (-1);
1170:
1171: break;
1172: }
1173:
1.12 jfb 1174: cvs_server_outlog = fopen(fpath, "w");
1175: if (cvs_server_outlog == NULL) {
1176: cvs_log(LP_ERRNO, "failed to open server output log `%s'",
1177: fpath);
1178: return (-1);
1179: }
1180:
1181: /* make the streams line-buffered */
1.75 xsa 1182: setvbuf(cvs_server_inlog, NULL, _IOLBF, (size_t)0);
1183: setvbuf(cvs_server_outlog, NULL, _IOLBF, (size_t)0);
1.12 jfb 1184:
1.13 jfb 1185: cvs_server_logon = 1;
1.12 jfb 1186:
1187: return (0);
1188: }
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